I&M Member Patents
Featuring I&M Society members’ technical achievements and innovations that have resulted in issued patents.
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Member Patents
2021
Patent Title
Methods and Apparatus for Network Delay and Distance Estimation, Computing Resource Selection, and Related Techniques
Patent Number & Issued Date
US 11,063,881
July 13, 2021
Inventor Names
Karthigesu Vijayasuganthan, Sorin Stoian, Shervin Shirmohammadi*, Shady A. Mohamed, Alaa Eddin Alchalabi
*Indicates IMS member
Abstract
An AI-based system to instantly estimate one-way delay measurement between any pair of nodes identified by their IP addresses on the Internet. That information is then used by another AI-based system that provides delay-variance-fair server selection for incoming users in a multiuser collaboration system; e.g., cloud gaming, metaverse, etc.
Assignee/Applicant
Swarmio Inc.
Link(s) to Patent
US Patent
2020
Patent Title
Methods for drilling multiple parallel wells with passive magnetic ranging
Patent Number & Issued Date
US 10,858,929
December 8, 2020
Inventor Names
Robert A. Estes*, Catalina Leal
*Indicates IMS member
Abstract
A system and method for drilling a second well with respect to a first well is disclosed. A first drill string having a known magnetic signature is disposed at a first depth in the first well. A second drill string is used to drill the second well. The second drill string includes a magnetometer that obtains a magnetic measurement of the first drill string during drilling of the second well. A processor uses the obtained magnetic measurement and the magnetic signature of the first drill string to steer the second drill string to drill the second well.
Assignee/Applicant
Baker Hughes
Link(s) to Patent
US Patent
Patent Title
Directional sensor with means for adjusting cancellation of interfering electromagnetic field
Patent Number & Issued Date
US 10,801,318
October 13, 2020
Inventor Names
Robert Alan Estes*, Randolph Depoo, Mark Wayne Hayenga
*Indicates IMS member
Abstract
Techniques for mitigating magnetic sensor errors are contemplated. In some aspects, the disclosed technology provides a method for reducing measurement errors in a directional module of a drilling system that includes steps for: receiving a current measurement from a current sensor, wherein the current measurement is associated with electrical current received at the current sensor via a first conductive branch and a second conductive branch, receiving a field measurement from a magnetic sensor, and associating the current measurement from the current sensor with the field measurement from the magnetic sensor. Systems and machine-readable media are also provided.
Assignee/Applicant
Halliburton Energy Services
Link(s) to Patent
US Patent
2019
Patent Title
High-Reliability Holdover Method and Topologies
Patent Number & Issued Date
US 9362926
November 27, 2019
Inventor Names
William J. Dickerson*, Robert T. Dickerson
*Indicates IMS member
Abstract
System and methods for a clock system disciplined to an external reference. In one embodiment, the clock includes a flywheel oscillator controlled by the external reference and a free running holdover oscillator. The holdover oscillator provides increased accuracy during periods of holdover when the external reference is not available. In a further embodiment, the flywheel oscillator is additionally controlled by a phase-locked loop with the holdover oscillator frequency as input, and a control switch for switching the flywheel oscillator to analog control if the phase-locked loop exhibits a fault.
Assignee/Applicant
Arbiter Systems, Inc.
Link(s) to Patent
US Patent
Patent Title
Extending the range of a MEMS gyroscope using eccentric accelerometers
Patent Number & Issued Date
US 10,378,330
August 31, 2019
Inventor Names
Robert A. Estes*, Randell R. Riggs
*Indicates IMS member
Abstract
A tool for use in a borehole penetrating a formation and a method for using the tool is disclosed. The tool includes a gyroscope for obtaining a first measurement of a rotation rate of the apparatus and at least one accelerometer for obtaining a second measurement of the rotation rate of the apparatus. A processor generates an estimate of the rotation rate using at least one of the first measurement of rotation rate and the second measurement of rotation rate. The estimate of the rotation rate is smoothed to determine a rotational position of a formation parameter measurement obtained during rotation of the apparatus in the borehole.
Assignee/Applicant
Baker Hughes
Link(s) to Patent
US Patent
Patent Title
Methods for measuring and modeling the process of prestressing concrete during tensioning/detensioning based on electronic dista
Patent Number & Issued Date
US 10203268
February 12, 2019
Inventor Names
David H. Parker*, John M. Payne
*Indicates IMS member
Abstract
Methods are disclosed for nondestructive testing and measuring the structural health of prestressed concrete structures, such as slabs, columns, girders, bridges, towers, elevated storage tanks, silos, cooling towers, wind power generation towers, liquefied gas storage tanks, nuclear power containment buildings, and the like. Measurements are made as the structure undergoes tensioning and detensioning operations. By measuring actual movements of cardinal points on the structure, in an absolute three-dimensional coordinate system, and comparing the measurements to a model—as tension on a tendon is changed—a margin of safety is assured. High accuracy measurements are made by electronic distance measurement (EDM) instruments over hundreds of meters, which yield coordinates of cardinal points with an uncertainty of the order of one part per million. The methods are proposed as possible alternatives to prior failures of post-tensioned concrete, including the Las Lomas Bridge, the Kapiolani Interchange On-Ramp, Turkey Point Unit 3 Nuclear Power Plant, and Crystal River Unit 3 Nuclear Power Plant. An extensive review of the most closely related prior arts is included.
Assignee/Applicant
David H. Parker, Laura P. Solliday, Sophie Lin
Link(s) to Patent
US Patent
Patent Title
System and method for polarimetric wavelet fractal detection and imaging
Patent Number & Issued Date
US 10,215,642 B2
February 26, 2019
Inventor Names
George C. Giakos*
*Indicates IMS member
Abstract
A system and method for detection of a target object/ material includes identifying a polarimetric signal for plurality of aspect angles. One/two-dimensional Mueller matrix image or one/two-dimensional Stokes vector image can be processed using power spectral analysis, wavelet and fractal analysis for further image, having increased discrimination with reduced false-ratio. In addition, each of the angular polarization states due to their association with a particular aspect angle are then cross-correlated to generate a two-dimensional image that relates the level of correlation with the aspect angle. Finally, the output information, including statistical parameters are fed to the input of a neural-fuzzy network for further optimization and image enhancement.
Assignee/Applicant
University of Akron
Link(s) to Patent
US Patent
Patent Title
Airborne Systems And Detection Methods Localisation And Production Of Images Of Buried Objects
Patent Number & Issued Date
US 20190033441
January 31, 2019
Inventor Names
Borja Gonzalez Valdes, Yuri Alvarez Lopez, Ana Arboleya, Yolanda Rodriguez Vaqueiro, Maria Garcia Fernandez, Fernando Las-Heras Andres, Antonio Garcia Pino|
Abstract
The invention relates to airborne systems and methods for the detection, localisation and production of images of buried objects and for the characterisation of the composition of the subsurface. The systems comprise at least one aerial module with a radar unit that emits and/or captures radar signals, a positioning and guidance system, the accuracy of which is equal to or less than 3 cm, and a ground station with a flight control system and a unit for processing radar signals where radar signal processing algorithms are applied. The invention also relates to a method for the detection, localisation and production of images of buried objects, and to a method for characterising the composition of the sub-surface. The invention is applicable in sectors where the detection of buried objects is required, for example in civil applications (detection of anti-personnel mines), inspection of tubing or in archeology.
Assignee/Applicant
University of Oviedo and Unviersity of Vigo (Spain)
Link(s) to Patent
US Patent
2018
Patent Title
Planar Transmission Line Permittivity Sensor and Calibration Method for the Characterization of Liquids, Powders, and Semisolid
Patent Number & Issued Date
US 10,139,468
November 27, 2018
Inventor Names
Jochem T. Roelvink and Samir Trabelsi*
*Indicates IMS member
Abstract
A low-cost planar transmission line sensor and simple calibration method for measuring the complex permittivity of materials with minimal sample preparation over a wide radio- and microwave frequencies. The sensor is also used for measuring anisotropic dielectric properties of materials with a defined grain.
Assignee/Applicant
The United States of America, as Represented by the Secretary of Agriculture, Washington, DC (US)
Link(s) to Patent
US Patent
Patent Title
Apparatus for Obtaining Cardiovascular Information by Measuring between Two Extremities
Patent Number & Issued Date
US 10,076,255 B2
September 18, 2018
Inventor Names
Ramon Pallàs Areny*, Ramon Casanella Alonso, Joan Gómez Clapers
*Indicates IMS member
Abstract
An apparatus for obtaining information on a cardiovascular system based exclusively on measurements between two limbs and effected with a pair of distal electrodes on each limb . The measurement is made by causing an alternating current to flow between one electrode of each limb and measuring the potential difference between the other two electrodes , one also on each limb . This potential difference has a low frequency component which is an electrocardiogram ( ECG ) and another component having a frequency of the injected alternating current and from which an impedance plethysmogram ( IPG ) is extracted . The cardiovascular information is determined by measuring the time interval between any predefined characteristic element of the ECG and IPG.
Assignee/Applicant
Universitat Politecnica de Catalunya, Barcelona
Link(s) to Patent
US Patent
Patent Title
Device For Monitoring A Current Of A Primary Conductor With Respect To A Predetermined Current Threshold, And Related Trip Assembly And Switching Device
Patent Number & Issued Date
US 10043627 (B2)
August 7, 2018
Inventor Names
Emanuele Dorella, Tatiana Escallada Casas, Sergio Toscani*
*Indicates IMS member
Abstract
A device for monitoring a current in a primary conductor with respect to a predetermined current threshold, comprising: - a magnetic circuit associable to the primary conductor and comprising a fixed part and an element which can rotate about a rotation axis; - at least one spring operatively connected to the rotating element for keeping it in a first position, the spring being elastically deformable along a linear axis; and - sensing means operatively associated to the magnetic circuit. The magnetic circuit is configured in such a way that the rotating element rotates from the first position to a second position when the current in the primary conductor exceeds the predetermined current threshold, so as to at least reduce one or more air gaps between the rotating element and the fixed part and to elongate the spring from a first length to a second length. The sensing means are configured for generating an output electrical signal caused by the rotation of the rotating element from the first position to the second position. The at least one spring is operatively connected to the rotating element in such a way to tilt towards the rotation axis moving above a surface of the rotating element which is transversal to the rotation axis, during the rotation of the rotating element from the first position to the second position.
Assignee/Applicant
ABB S.p.A.
Link(s) to Patent
US Patent
Patent Title
Airborne System and Method for the Characterisation and Measurement of Radiating Systems or Antennas
Patent Number & Issued Date
ES 2639687B8
July 9, 2018
Inventor Names
Yuri Alvarez Lopez *, Maria Garcia Fernandez, Fernando Las-Heras Andres, Ana Arboleya Arboleya, Borja Gonzalez Valdez, Yolanda Rodriguez Vaqueiro, Antonio Garcia Pino
*Indicates IMS member
Abstract
The invention relates to an airborne system and method for the characterization and measurement of radiating systems or antennas, comprising: an aerial module including a unit for measuring electromagnetic emissions, which captures the electromagnetic field radiated by the radiating system or antenna, and a positioning and guiding system with an accuracy equal to or less than 3 cm; and a ground station including a unit for processing the electromagnetic emission measurements, which processes the measurements using a set of algorithms for processing electromagnetic emission measurements. The invention also relates to a method for measuring and characterising radiating systems or antennas. The invention is suitable for use in sectors that require antennas to be characterised and measured, such as, for example, radar and radio navigation facilities, terrestrial- and satellite-based telecommunications systems, or terrestrial broadcasting facilities.
Assignee/Applicant
University of Oviedo and Unviersity of Vigo (Spain)
Link(s) to Patent
Spanish Patent
Patent Title
External Hollow Antenna
Patent Number & Issued Date
US 9,995,132
June 12, 2018
Inventor Names
Michael F. Gard*, Brian K. Bailey, Richard F. Sharp
*Indicates IMS member
Abstract
A beacon assembly located at a downhole end of a drill string proximate a boring tool. The beacon assembly transmits data to an above-ground receiver. The beacon has a housing with a housing wall located between its sensors, such as gradiometers, accelerometers, and other orientation sensors, and an antenna assembly. The antenna assembly has a protective covering made of electromagnetically transparent material.
Assignee/Applicant
The Charles Machine Works, Inc.
Link(s) to Patent
US Patent
Patent Title
Interconnect cable having insulated wires with a conductive coating
Patent Number & Issued Date
US9991023B2
June 5, 2018
Inventor Names
Arthur G. Buck, Yevgeniy Mayevskiy*, Malai H. Khamphilavong, Thuong A. Huynh
*Indicates IMS member
Abstract
A cable assembly includes a plurality of wires. Each wire has a first end, intermediate section, and a second end. The intermediate sections of the respective wires are detached from each other. A conductive shield surrounds the respective intermediate sections of the plurality of wires. Each wire includes a conductor, an insulating layer that surrounds the conductor, and a conductive coating formed on an outside surface of the insulating layer.
Assignee/Applicant
Creganna Unlimited Co
Link(s) to Patent
US Patent
Patent Title
High-reliability holdover method and topologies
Patent Number & Issued Date
US 9979406
May 22, 2018
Inventor Names
William J. DIckerson*, Robert T. Dickerson
*Indicates IMS member
Abstract
System and methods for a clock system disciplined to an external reference. In one embodiment, the clock includes a flywheel oscillator controlled by the external reference and a free running holdover oscillator. The holdover oscillator provides increased accuracy during periods of holdover when the external reference is not available. In a further embodiment, the flywheel oscillator is additionally controlled by a phase-locked loop with the holdover oscillator frequency as input, and a control switch for switching the flywheel oscillator to analog control if the phase-locked loop exhibits a fault.
Assignee/Applicant
Arbiter Systems, Inc.
Link(s) to Patent
US Patent
Patent Title
Apparatus and methods for oriented-fracturing of formations
Patent Number & Issued Date
US 9,970,268
May 15, 2018
Inventor Names
Kelly D. Ireland, Robert A. Estes*
*Indicates IMS member
Abstract
In one aspect, an apparatus for treating a formation is disclosed that in one non-limiting embodiment includes a first string for placement in the wellbore that includes a first flow port that enables a treatment fluid to flow from inside the first string to the formation via an annulus between the first string and the formation, a second string for placement in the first string, wherein the second string includes a second flow port that supplies the treatment fluid to the first flow port along a selected radial orientation to direct the treatment fluid in the selected radial direction.
Assignee/Applicant
Baker Hughes Inc
Link(s) to Patent
US Patent
Patent Title
Downhole closed loop drilling system with depth measurement
Patent Number & Issued Date
US 9,963,936
May 8, 2018
Inventor Names
Thomas Kruspe, Robert A. Estes*, Rocco DiFoggio, Francis Chad Hanak
*Indicates IMS member
Abstract
A method, system and drilling apparatus for directional drilling are disclosed. A drill bit is located at a downhole end of a drill string in a borehole. A length of the borehole between a surface location and the drill bit at the downhole end of a drill string is determined and an azimuth angle and inclination of the drill bit is obtained. The length of the borehole may be determined by recording an arrival time at a downhole location of an acoustic pulse travelling from a surface location to the downhole location and determines the travel time and borehole length therefrom. A downhole processor determines a position and orientation of the drill bit from the determined length, azimuth angle and inclination and alters a steering parameter of the drill bit using the determined position and orientation of the drill bit to obtain a selected trajectory for drilling the borehole.
Assignee/Applicant
Baker Hughes Inc.
Link(s) to Patent
US Patent
Patent Title
Hall sensor and sensing method, and corresponding device
Patent Number & Issued Date
US 9909926B2
April 24, 2018
Inventor Names
Marco Crescentini*, Marco Tartagni, Aldo Romani, Roberto Canegallo, Marco Marchesi, Domenico Cristaudo
*Indicates IMS member
Abstract
A Hall sensor may include a Hall sensing element configured to produce a Hall voltage indicative of a magnetic field when traversed by an electric current, and a first pair of bias electrodes mutually opposed in a first direction across the Hall sensing element. The Hall sensor may include a second pair of bias electrodes mutually opposed in a second direction across the Hall sensing element. The Hall sensor may include a first pair of sensing electrodes mutually opposed in a third direction across the Hall sensing element, and a second pair of sensing electrodes mutually opposed in a fourth direction across the Hall sensing element. The fourth direction may be orthogonal to the third direction, each sensing electrode being between a bias electrode of the first pair and a bias electrode of the second pair.
Assignee/Applicant
STMicroelectronics SRL
Link(s) to Patent
US Patent
Patent Title
Chemical Sensor
Patent Number & Issued Date
US 9909926B2
March 6, 2018
Inventor Names
Richard Henry Hopper, Andrea De Luca*, Kaspars Ledins, Syed Zeeshan ALI, Mohamed Foysol Chowdhury
*Indicates IMS member
Abstract
We disclose a chemical sensing device for detecting a fluid. The sensing device comprises: at least one substrate region comprising at least one etched portion; a dielectric region formed on the at least one substrate region, the dielectric region comprising at least one dielectric membrane region adjacent to the at least one etched portion; an optical source for emitting an infra-red (IR) signal; an optical detector for detecting the IR signal emitted from the optical source; one or more further substrates formed on or under the dielectric region, said one or more further substrates defining an optical path for the IR signal to propagate from the optical source to the optical detector. At least one of the optical source and optical detector is formed in or on the dielectric membrane region.
Assignee/Applicant
Ams Sensors UK
Link(s) to Patent
US Patent
Patent Title
Two-Input Amplifier
Patent Number & Issued Date
US 9912304
March 6, 2018
Inventor Names
Alexandru A. Ciubotaru*, Christoph M. Steinbrecher
*Indicates IMS member
Abstract
A two-input amplifier is disclosed. The amplifier can include an amplification path for a first input signal that can have adjustable flatness or high-frequency peaking, and an amplification path for a second input that can be substantially independent of the frequency-shaping aspect of the first-input path. The first-input amplification path can include an operational amplifier as an active device and a plurality of passive elements for frequency shaping. The second-input amplification path can include a device that injects its output current into a node of the first path. The signals of the two paths can be combined and appear substantially independently of each other at the output of the amplifier.
Assignee/Applicant
Analog Devices, Inc. (Norwood, MA)
Link(s) to Patent
US Patent
Patent Title
Vehicle operating state recognition based on vibration signal analysis
Patent Number & Issued Date
CN201511021941.4
January 30, 2018
Inventor Names
Datong Liu, Guangxing Niu, Liansheng Liu, Yu Peng, Xiyuan Peng
*Indicates IMS member
Abstract
Based on the vehicle operating mode judgement method of the vibration signal analysis, belong to vehicle performance control field, invention purpose is for the method that provides online monitoring vehicle operating operating mode, on the one hand, can carry out the Intelligent Identify to the vehicle type, can identify the different operating conditions of vehicle on the other hand, is used for satisfying the demand to the vehicle state monitoring. The invention includes following step: step 1, gather the vibration signal of vehicle, and carries out the Denoise processing to it; Step 2, carry out the signal character value to the vibration signal after going to make an uproar and draw; The operating mode Intelligent Identify is carried out to step 3, the characteristic value of drawing according to step No. 2; Output vehicle operating mode type. The invention is used for monitoring the vehicle operating condition.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Self-biased Multiple Cascode Current Mirror Circuit
Patent Number & Issued Date
USA 9,874,893
January 23, 2018
Inventor Names
Alexandru A. Ciubotaru
Abstract
A self-biased cascode current mirror/scaler circuit can include a bias FET biased with an input current to generate a gate-source voltage, which can be divided by a bias circuit into a first voltage component (e.g., at a threshold voltage) and a second voltage component (at a FET drain-source saturation voltage or edge of saturation voltage). An input FET of the current mirror/scaler circuit can receive approximately the input current or a function thereof. A gate of the input FET can be biased at the first voltage component in sum with a FET drain-source saturation voltage or edge of saturation voltage of the input FET. A gate of the output FET can be connected to the gate of the input FET. A gate of a cascode FET in series with the output FET can be biased at the first voltage component in sum with the second voltage component in sum with the FET drain-source saturation voltage or edge of saturation voltage of the input FET. Multiple cascode FETs, multiple output stages, high frequency bypass capacitors, and lowpass filters are also described.
Assignee/Applicant
Analog Devices, Inc. (Norwood, MA)
Link(s) to Patent
US Patent
Patent Title
Cable Cassette Apparatus
Patent Number & Issued Date
US 10,019,044 (10 July 2018), US 10,095,278 (9 October 2018)
Inventor Names
M. Cocchini, M. Cracraft*, K. McMillan, A. Shahani, J. Torok
Abstract
An apparatus includes a cassette. The cassette includes a carriage. The carriage is retained internally to the cassette. The apparatus further includes a booklet assembly. The booklet assembly includes a cable connector. The cable connector is affixed internally to the booklet assembly. The cassette is configured for insertion into the booklet assembly. The apparatus further includes a cable assembly. The cable assembly is configured for insertion into the cable connector. The carriage is configured for retaining the cable assembly. In an aspect, a method of using the apparatus includes preloading the cable assembly into the carriage, inserting the cassette into the booklet assembly, and configuring the carriage such that the cable assembly is inserted into the cable connector and retained in an inserted position by the carriage.
Assignee/Applicant
International Business Machines Corporation
Link(s) to Patent
US Patent
Patent Title
Hydrophone Calibration System
Patent Number & Issued Date
US 9,746,585 B2 29-Aug-2017, GB 2523206B 14-Mar-2018
Inventor Names
M. Cocchini, M. Cracraft*, K. McMillan, A. Shahani, J. Torok
Abstract
Hydrophone calibration system for very low frequencies with variable pressure, and temperature capabilities
Assignee/Applicant
Ocean Networks Canada
Link(s) to Patent
UK Patent
Patent Title
MOSCAP-based circuitry for wireless communication devices, and methods of making and using the same
Patent Number & Issued Date
US 9985691 B2
May 29, 2018
Inventor Names
Somnath Mukherjee
Abstract
A wireless (e.g., near field or RF) communication device, and methods of manufacturing and using the same are disclosed. The wireless communication device includes a receiver and/or transmitter, a substrate with an antenna thereon, an integrated circuit, and one or more continuity sensors. The antenna receives and/or backscatters a wireless signal. The integrated circuit processes the wireless signal and/or information therefrom, and/or generates the wireless signal and/or information therefor. The continuity sensor(s) are configured to sense or determine the presence of a chemical or substance in the package or container, and thus a continuity state of a package or container on which the communication device is placed or to which the communication device is fixed or adhered. The continuity sensor(s) are electrically connected to a set of terminals of the integrated circuit different from the set of terminals to which the antenna is electrically connected.
Assignee/Applicant
Thin Film Electronics ASA , Oslo, Norway
Link(s) to Patent
US Patent
Patent Title
Method and apparatus to detect contaminants in pressurized fluid flows
Patent Number & Issued Date
US 9,970,804 B2
May 15, 2018
Inventor Names
Mohamed Abou Khousa*, Ahmed Al-Durra , Khaled Alwahedi *
Abstract
Method and apparatus for the detection and measurement of contaminant concentration within pressurized fluid flows in real-time. The provided method and apparatus allow for real-time detection of black powder contaminants in pressurized gas flows by irradiating the flow with electromagnetic waves generated by hermetically-sealed electromagnetic wave radiators and measuring wave characteristics. An image is rendered of the spatial distribution of black powder within the pipe cross section, and mass flow of the contaminated gas is measured.
Assignee/Applicant
Emirates Innovations
Link(s) to Patent
US Patent
Patent Title
Methods and apparatus for emergency mine communications using acoustic waves, time synchronization, and digital signal processin
Patent Number & Issued Date
US 10020895
July 10, 2018
Inventor Names
David H. Parker*
Abstract
Acoustic waves are transmitted bidirectionally through-the-earth in a simple robust architecture in combination with signal-to-noise reduction techniques which ensure the ability to communicate using simple tools available in a mine. An enhanced version includes a personal electronics device designed to be carried by a miner to automatically decode acoustically transmitted text messages.
Link(s) to Patent
US Patent
2017
Patent Title
Modular Compaction Boring Machine System
Patent Number & Issued Date
US 9,850,715
December 26, 2017
Inventor Names
Beckwith, Blessum, Gard*, Kukuk, MacDonald, Salas, Sands, Shaffer, Sharp, Stephenson, Webb, and Young
*Indicates IMS member
Abstract
A modular compaction boring device. The boring device comprises a compaction boring head which creates a borehole through a subsurface by operation of a thruster and a rear and forward anchor. Extension of the thruster while the rear anchors are engaged move the boring head forward. Retraction of the thruster while the forward anchors are engaged brings the rear anchors forward for an addition stroke. A steering geometry in the boring head and rotation of the boring head allow steering of the boring device. Steering, thrust, and anchors may be controlled remotely through an umbilical cable pulled through the borehole by the boring device.
Assignee/Applicant
The Charles Machine Works, Inc.
Link(s) to Patent
US Patent
Patent Title
Magnetic field detectors, implantable medical devices, and related methods that utilize a suspended proof mass and magnetically
Patent Number & Issued Date
US 9839783
December 12, 2017
Inventor Names
Randal C. Schulhauser, Ralph B. Danzl, Sharon Kohanna Murray*, Michael F. Mattes
*Indicates IMS member
Abstract
Magnetic field detectors include a proof mass suspended by deformable arms similar to a three dimensional accelerometer. The magnetic field detectors further include magnetically sensitive material present on the proof mass and/or deformable arms to cause movement of the proof mass and/or deformable arms when in the presence of a magnetic field. This movement is converted to an electrical signal and that electrical signal is compared to a reference to determine if a magnetic field of interest is present. The magnetic field detector may be included within an implantable medical device, and when the magnetic field detector indicates that a magnetic field of an MRI scanner is present, the implantable medical device may switch to an MRI mode of operation. The device may also switch back to a normal mode of operation once the MRI scanner is no longer detected such as after a predefined amount of time.
Assignee/Applicant
Medtronic
Link(s) to Patent
US Patent
Patent Title
AOS satellite data transmission Available data district's extraction system and method based on FPGA
Patent Number & Issued Date
CN201510187602.7
November 17, 2017
Inventor Names
Shaojun Wang, Ning Ma, Datong Liu*, Xinying Cui, Yu Peng
*Indicates IMS member
Abstract
AOS satellite data transmission Available data district's extraction system and method based on FPGA belong to the satellite charge number according to the processing technic field.The invention is processd and is distributed satellite charge number certificate in order to solve the mode that adopts the software design, and there is the problem of bottleneck in the processing speed. The system includes three data memory module, be used for giving up the mistake frame data to the essential information that AOS standard frame data the carried check-up of comparing, exports the format check module and the data extraction module of correct frame data; The method includes three data storage step, be used for giving up the mistake frame data through the essential information that format check pair of module AOS standard frame data the carried check-up of comparing, the step of exporting correct frame data with be used for the number of pass according to drawing the correct frame data of pair of module according to the data pattern requirement, draw according to the data unit, and splice into the step of the analytic data of anticipated length. The invention is used for satellite data transmission Available data district to draw.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Vehicle operating state monitoring module and method based on vibration signal analysis
Patent Number & Issued Date
CN201510980798.5
November 14, 2017
Inventor Names
Datong Liu, Guangxing Niu, Yi Tang, Wang Liu, Yu Peng, Xiyuan Peng
*Indicates IMS member
Abstract
Based on the vehicle operating real time monitoring module and the method of the vibration signal analysis, belong to vehicle performance control field, the invention adopts performance parameter monitoring, lubrication oil analysis monitoring method to realize the running state monitoring to the vehicle for solving, needs to select the problem of different monitoring parameters to different vehicles. The invention includes that main controller, signal acquisition take care of unit and TF card; The vehicle vibration signal sample component model that the host computer provided according to vehicle operating real time monitoring module, the Model Construction the corresponding relation of characteristic value and operating mode type of vehicle vibration signal, the model is downloaded and is waited for in the main controller and transferring; The vibration signal of vehicle is gathered to the acceleration sensor on the vehicle of being provided; Process reason back signal and carry out time-domain analysis, frequency-domain analysis and transform domain analysis, acquire the characteristic value of the vehicle vibration signal; And the calling model determines the operating mode type that current vehicle vibration signal pair was answered, realizes the online monitoring to the vehicle operating mode.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Real-time, limited orientation-sensor auto-calibration
Patent Number & Issued Date
US 9,804,288 B2,
October 31, 2017
Inventor Names
Robert A. Estes*, Randy R. Riggs, Francis Chad Hanak, John F. Priest
Abstract
A system method and computer-readable medium for correcting measurements obtained by a down hole tool for residual measurement errors is disclosed. A down hole tool having at least two directional field sensors is disposed in a borehole. The at least two directional sensors are substantially orthogonal to each other and to a longitudinal axis of the down hole tool. Measurements are obtained from the at least two directional sensors during rotation of the tool by at least 360 degrees around the longitudinal axis of the tool. Residual measurement errors are determined for the obtained measurements, and a quality level of the determined residual measurement errors selected. The determined residual measurement errors are applied to the obtained measurements when the determined residual measurement errors are consistent with the selected quality level. In various embodiments, the residual measurement errors are reduced from a first value that does not match the selected quality level to a second value that are consistent with the selected quality level.
Assignee/Applicant
Baker Hughes Incorporated, Houston, TX (US)
Link(s) to Patent
US Patent
Patent Title
Bi-directional motion of a Lorentz-force actuated needle-free injector (NFI)
Patent Number & Issued Date
9,789,256
October 17, 2017
Inventor Names
Ian Hunter, Andrew Taberner*, N. Catherine Hogan
Abstract
The present invention relate to a method and corresponding apparatus for just in time mixing of a solid or powdered formulation and its subsequent delivery to a biological body. In some embodiments, a powdered formulation is maintained in a first chamber of a plurality of chambers. A plurality of electromagnetic actuators are in communication with the plurality of chambers. The actuators, when activated, generate a pressure within at least the first chamber. The pressure results in mixing of the powdered formulation and a diluent in time for delivering into the biological body.
Assignee/Applicant
Massachusetts Institute of Technology
Link(s) to Patent
US Patent
Patent Title
Satellite telemetry data anomaly detection based on DTW distance
Patent Number & Issued Date
CN201510351199.7
September 29, 2017
Inventor Names
Yu Peng, Datong Liu*, Jing Chen, Jingyue Pang, Xiyuan Peng
*Indicates IMS member
Abstract
Satellite telemetry data anomaly detection method based on DTW relates to the satellite telemetry data and examines the field unusually. The invention for the unusual parameter of solving present detection method and existing surpass the satellite unit exception missing detection that the alarm threshold results in the problem, have small skew and make tolerance result accuracy and then result in anomaly detection not enough accurate problem as a result inadequately with fixed problem and the time series of segment to exist great deviation to the satellite telemetry data that has the cycle characteristic of counting. The invention uses the argument catastrophe point to segment the satellite telemetry data as the sign, then calculates in the time series that contains the classification label DTW in each classification class apart from the mean value, and obtains the time series x' who waits to carry on the anomaly detection; DTW distance between the time series X that calculates x' and contain the classification label, determine x' with accurate under minimum DTW between the classification l' apart from dmin, thereby concern according to dmin big or small between with whether definite x' is unusual sequence. The invention is suitable for satellite telemetry data anomaly detection.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Frame head fast synchronization system and method
Patent Number & Issued Date
CN201510329974.9
September 23, 2017
Inventor Names
Shaojun Wang, Ning Ma, Yao Ji, Xinying Cui, Datong Liu*, Yu Peng
*Indicates IMS member
Abstract
Frame head quick locking in system and method belong to satellite data transmission data acquisition processing technic field. The invention passes other improvement of data code speed level in order to solve along with defending, and present frame head synchronous method can't satisfy the problem that the data processing speed required. Invention system and method can realize the processing and the synchronization of data high-speed communication, change to going here and there from the received data of base equipment, and with data with N bit wide handled as the internal data bit wide, thereby realizes simultaneous processing N under the one clock? The bit data have satisfied and have defended the data processing speed requirement that passes data. The invention is used for the frame head quick locking in of satellite data transmission data.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Electric horizontal directional drilling machine system
Patent Number & Issued Date
US 9,752,384
September 5, 2017
Inventor Names
Michael F. Gard
Abstract
An electric horizontal directional drilling machine. An electric horizontal directional drilling machine is powered by an electric power assembly. The power assembly is made up of a fuel call and inverter, or multiple fuel cells with synchronized inverters. The electric motor operates hydraulic pumps or works independently to rotate, advance and retract a drill string and downhole tool through the earth and operate various machine functions. Mechanical functions of the drilling machine may also be satisfied through the use of electric rotary actuators (e.g., motors) and linear actuators (e.g., linear motors and solenoids).
Assignee/Applicant
The Charles Machine Works, Inc.
Link(s) to Patent
US Patent
Patent Title
Indirect health indicator extraction approach for wireless data transmission devices
Patent Number & Issued Date
CN201410418596.7
August 25, 2017
Inventor Names
Jingyue Pang, Datong Liu*, Limeng Guo, Qi Li, Yu Peng, Xiyuan Peng
*Indicates IMS member
Abstract
The indirect health factor acquisition method for wireless data transmission devices belongs to the field of complex system diagnosis and prediction. The present invention is to solve the problem that the existing data transmission equipment is in a poor working condition and has poor maintainability in response, resulting in a decrease in accuracy of power adjustment. The indirect health factor-oriented method for a wireless data transmission device of the present invention extracts the indirect health factor that can reflect the health status of the data transmission device by using the statistical theory, the power and the automatic control gain parameter from the perspective of the test data, , Which effectively improves the accuracy of power adjustment and provides practical guidelines for fault prediction and health management of electronic equipment. It is applicable to the actual relay unit of an airborne wireless data communication and has been verified by application. It provides a practical reference for the degradation of wireless data transmission system.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Ir Detector Array Device
Patent Number & Issued Date
US20170219434A1
August 3, 2017
Inventor Names
Florin Udrea, Syed Zeeshan ALI, Richard Henry Hopper, Julian Gardner, Andrea De Luca*
*Indicates IMS member
Abstract
We disclose herein a thermal IR detector array device comprising a dielectric membrane, supported by a substrate, the membrane having an array of IR detectors, where the array size is at least 3 by 3 or larger, and there are tracks embedded within the membrane layers to separate each element of the array, the tracks also acting as heatsinks and/or cold junction regions.
Assignee/Applicant
Ams Sensors UK
Link(s) to Patent
US Patent
Patent Title
Ir Detector Array Device
Patent Number & Issued Date
US20170219434A1
August 3, 2017
Inventor Names
Florin Udrea, Syed Zeeshan ALI, Richard Henry Hopper, Julian Gardner, Andrea De Luca*
*Indicates IMS member
Abstract
We disclose an array of Infra-Red (IR) detectors comprising at least one dielectric membrane formed on a semiconductor substrate comprising an etched portion; at least two IR detectors, and at least one patterned layer formed within or on one or both sides of the said dielectric membrane for controlling the IR absorption of at least one of the IR detectors. The patterned layer comprises laterally spaced structures.
Assignee/Applicant
Ams Sensors UK
Link(s) to Patent
US Patent
Patent Title
Electrocardiogram (ecg) Biometric Authentication
Patent Number & Issued Date
US 9,699,182 B2
July 4, 2017
Inventor Names
Abdulmotaleb El Saddik*, Juan Sebastian Arteaga-Falconi*, Hussein Al Osman
*Indicates IMS member
Abstract
Electrocardiogram, better known as ECG or EKG, is a method used to measure and record the electrical potential generated by the heart on the skin. ECG data is unique to a user and can be used for authentication systems such as access or financial cards or for granting access to computing devices such as mobile devices. Electrode contact on a card or device are used to received ECG data which is processed to extract features of the ECG which are compared to a template for a user.
Assignee/Applicant
Abdulmotaleb El Saddik, Juan Sebastian Arteaga-Falconi, Hussein Al Osman
Link(s) to Patent
US Patent
Patent Title
Electronic Receiver Device Detection System and Method
Patent Number & Issued Date
Patent Number 9,689,964 Issue Date: June 27, 2017
Inventor Names
Jagannathan Sarangapani*, Maciej Jan Zawodniok*, Vivek Thotla, Mohammad Tayeb Ghasr*, Jake Hertenstein
Abstract
A super regenerative receiver detection system and method that includes a computing system that stores and executes a cross modulation correlation component to modulate a radio-frequency (RF) stimulation signal that is transmitted in an area using a modulating signal having a first modulating mode, and receive a response UEE signal from the area in which the response UEE signal includes a cross modulated signal emitted from a super regenerative receiver (SRR). The cross modulated signal having a second modulation mode that is different from the first modulation mode. Using this information, the cross modulation correlation component processes the received UEE signal to determine a cross modulation correlation level of a cross modulation signal relative to the modulating signal, and generates an alert signal when the determined cross modulation correlation level exceeds a specified threshold.
Assignee/Applicant
The Curators of the University of Missouri
Link(s) to Patent
US Patent
Patent Title
An Anomaly Detection Method of Condition Monitoring Data Flow Based on Improved Gaussian Process Regression Model
Patent Number & Issued Date
CN 201410216320.0
June 20, 2017
Inventor Names
Yu Peng, Jingyue Pang, Ge Song, Datong Liu*, Xiyuan Peng
*Indicates IMS member
Abstract
The present invention relates to an abnormality detection method for status monitoring data flow based on an improved method for detecting abnormality of status monitoring data flow based on an improved Gaussian process regression method. The present invention is to solve the problem that the existing method has the effect of detecting abnormality of monitoring data stream low. First, determine the sliding window size of historical data; Second, determine the type of mean and covariance functions; Third, set the initial value of the hyperparameter to [0-1] between the random number; Fourth, extract the current moment t q data; Fifth, determine the Gaussian process regression model; Sixth, the use of Gaussian process regression model of the nature of the forecast; Seven, calculate the t + 1 moment of the normal data PI; Eight, the monitoring data and PI comparison; The real monitoring data is marked as abnormal; 10, calculating β (xt + 1) corresponding to monitoring value at time t + 1; 11, adding real value or predicted mean value to t + 1 to DT; DT. The invention is applied in the field of network communication.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
System and method for non-contact assessment of changes in critical material properties
Patent Number & Issued Date
US9683954B2,
June 20, 2017
Inventor Names
Sreeram Dhurjaty
Abstract
A material signature detector that provides for the assessment of changes in critical material properties of materials such as pharmaceuticals and solutions is disclosed. The material signature detector is non-contact and non-invasive and provides the ability to detect unintended changes in the contents of a vial or other container during the fill-finish process, transport, compounding, or storage. The material signature detector uses a novel resonant electrical impulse spectroscopy circuit that employs quadrature demodulation at lower frequencies to detect changes in the capacitance and conductance (resistance) of the sample under test. A series of digital signatures are created at different frequencies to provide an overall assessment of changes in the properties of the material under test. These digital signatures may in turn be stored in an electronic library for subsequent analytics.
Assignee/Applicant
Sreeram Dhurjaty
Link(s) to Patent
US Patent
Patent Title
Airborne wireless data communication relaying unit surplus life prediction method and prediction device
Patent Number & Issued Date
CN201410588957.2
June 16, 2017
Inventor Names
Datong Liu*, Jingyue Pang, Jing Chen, Limeng Guo, Qi Li, Yu Peng
*Indicates IMS member
Abstract
Airborne wireless data communication relaying unit surplus life prediction method and prediction device relate to the Method and apparatus for of relaying unit surplus life prediction, the invention for solve current to the health status of airborne wireless data communication relaying unit diagnose and the change of the healthy factor of in-process foreseeed complicated, and there is the noise interference, therefore can not carry out quick accurate prediction to its health status, simultaneously, the original test data file specification of airborne wireless data communication relaying unit is in neat formation, can not directly carry out the problem of procesing. The said airborne wireless data communication relaying unit of invention surplus life prediction method includes: carry out the preliminary treatment to the test data; Carrying out the trend prediction of airborne wireless data communication relaying unit health status, acquireing the prediction time that the trouble takes place according to the trouble threshold value, the relaying unit remains the life-span promptly; The health status trend prediction is including direct healthy factor prediction and indirect healthy factor prediction; The invention is arranged in the Data transfer system.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Frequency Meter
Patent Number & Issued Date
WO 2017089856A1
June 1, 2017
Inventor Names
Wilmar Hernandez, Carlos Calderon Cordova*, John Lanchi, Carlos Campoverde
*Indicates IMS member
Abstract
In one embodiment, a device for estimating frequency of the periodic signal includes a processor that receives a periodic signal and a periodic estimator module that is executable by the processor to estimate a length of a predefined number of cycles of the periodic signal with respect to a comparator signal to generate a length estimate for each of the predefined number of cycles, and store the length estimates. The periodic estimator module is further executable by the processor to sample the stored length estimates with replacement to generate resampled estimated vectors, and to calculate resample means for each of the resampled estimated length vectors, wherein each resample mean is the average of the length estimates in a respective resampled estimated length vector. The periodic estimator module is then executable by the processor to calculate a final periodic estimate of the periodic signal based on the resample means.
Assignee/Applicant
Universidad Tecnica Particular De Loja
Link(s) to Patent
WO Patent
Patent Title
Wireless data transmission equipment test data mining systems and method based on LabVIEW and a Matlab combined programming
Patent Number & Issued Date
CN201410471713.6
May 5, 2017
Inventor Names
Yu Peng, Jingyue Pang, Jing Chen, Tianyi Zhao, Datong Liu*
*Indicates IMS member
Abstract
Wireless data transmission equipment test data mining systems and method based on LabVIEW and a Matlab combined programming, the invention relate to test data mining systems and method, and the invention will solve that accurate discernment is hardly carried out to the cognation between the test data to the artifical identification method and draw and work load is great, use the graphic user interface of LabVIEW difficulty and Matlab easy and simple to handle, the figure is beautifully not as LabVIEW's problem, and the system includes that data pre processing module, parameter sequence draw module, waveform display module, grey correlation analysis module and Mining fuzzy association rules module; The system carryes out according to following step: 1 is retrencied the array; 2 pairs of double precision numerical value type numbers are according to carrying out the graphic display; 3 calculate the gloomy degree of association r*i of improvement; 4 express the rule with strong association rules array puts in order; 5 reach the correlation between the parameter sequence; The test data field of excavating is applied to in the invention.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Sensor Data anomaly frame detection approach based on LS-SVM algorithm
Patent Number & Issued Date
CN201410422006.8
May 3, 2017
Inventor Names
Datong Liu*, Yu Peng, Ge Song, Jingyue Pang, Xiyuan Peng
*Indicates IMS member
Abstract
Sensor Data anomaly frame detection approach based on LS-SVM algorithm belong to aeronautics monitoring data anomaly detection. The invention is difficult to judge change or the abnormal problem that the short swings that appear or mode appear for the anomaly detection mode of solving current individual test point in the time series. The method includes: 1, set up required detection confidence probability p, detection lug segment length n, the minimum number m of abnormal dots in the passage, 2, from t0 constantly to the data in the time series length n carry out some anomaly detection confidence probabilities be p of LS-SVM algorithm. 3, based on the error and the point of anormaly points the positions of the abnormal points can be recognized. The method can be used in aero & space vehicles control field.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Satellite failure diagnostic method based on the Adaptive Boosting (AdaBoost) algorithm
Patent Number & Issued Date
CN201410471743.7
March 29, 2017
Inventor Names
Yu Peng, Datong Liu*, Sijie He, Jingyue Pang, Xiyuan Peng
*Indicates IMS member
Abstract
Satellite failure diagnostic method based on the Adaptive Boosting (AdaBoost) algorithm belongs to satellite failure diagnostic techniques field. The invention has proposed the satellite failure diagnostic method based on the Adaptive Boosting (AdaBoost) algorithm for the fault diagnosis method of the present simple Bayes system problem to the less state of fault diagnosis capability weaker of number: be applied to present simple Bayes's fault diagnosis system with the Integrated algorithm Adaptive Boosting (AdaBoost) algorithm is equitable; After the training, the weights of change sample change the wrong numerical value of the incident type characteristic of sample that divides promptly, promote the concern degree of fault diagnosis system to the characteristic at every turn; Establish the corresponding relation matrix of new state and incident characteristic again, the trained classifier is new fault diagnosis classification ware with the Classifiers ensemble of training again. The invention is applicable to satellite failure diagnosis field.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Reducing Rotational Vibration in Rotational Measurements
Patent Number & Issued Date
US 9,605,527 B2,
March 28, 2017
Inventor Names
Arcady Reiderman, Robert Estes*, Fei Le, Hanno Reckmann, Christian Herbig
Abstract
An apparatus for mitigation of torsional noise effects on borehole measurements. The apparatus may include a conveyance device; a sleeve having a sensor section, the sleeve rotatably disposed on the conveyance device; a sensor having at least one component disposed on the sensor section; and a driver coupled to the conveyance device and configured to rotate at least the sleeve sensor section. The driver may rotate the sleeve sensor section independent of the conveyance device. The driver may rotate the sleeve sensor section at a preset substantially constant rotational speed. The sleeve may include at least one arm configured to selectively lock the sleeve to a surface in the borehole. The driver may rotate the sleeve sensor section during measurement by the sensor. The driver may selectively couple the sleeve.
Assignee/Applicant
Baker Hughes Incorporated, Houston, TX (US)
Link(s) to Patent
US Patent
Patent Title
Local structure to maintain the global supervision of embedding complex system monitoring data visualization methods
Patent Number & Issued Date
CN201410325740.2
March 22, 2017
Inventor Names
Yu Peng, Junbao Li, Shan Yin, Datong Liu, Jun Liang
*Indicates IMS member
Abstract
The global supervision map of local structure maintenance is embedded in the visualization method of monitoring data of complex system and belongs to the technical field of complex system monitoring data processing. In order to solve the problems that the monitoring data of the existing complex systems are high in dimension, large in scale and difficult in visualization. The method comprises the following steps: collecting m-type n-dimensional monitoring data of a complex system, calculating the monitoring data with the same label information and the adjacent monitoring data, and obtaining the same weight matrix and the neighboring weight matrix of the monitoring data, And then obtains the diagonal matrix D and the Laplacian matrix L. Finally, the linear mapping matrix A is obtained according to the feature mapping formula to obtain the mapping of the m-type n-dimensional monitoring data xi in the visible two-dimensional or three-dimensional space, Visualize complex system monitoring data. The invention is used for visualizing the monitoring data of complex system.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Online multi -parameter water quality analyzer
Patent Number & Issued Date
CN206002529U
March 8, 2017
Inventor Names
*Jun Xia; Zheng Ma; Jianlin Zhang; Fuguo Hao; Jian An; Zhaohui Yu
*Indicates IMS member
Abstract
The utility model discloses an online multi -parameter water quality analyzer, including secondary table and multiple sensor, this secondary table includes: bottom plate, special purpose interface board, generic interface board and display screen, multiple sensor includes one -parameter sensor, electrode and combined electrode and multi -parameter sensor, multiple sensor is received respectively on the corresponding interface board of secondary table, in this secondary table, this special purpose interface board, this generic interface board and this display screen are connected respectively to this bottom plate, and this bottom plate, this special purpose interface board and this generic interface board are connected respectively to this display screen. The utility model discloses the sensor of the arbitrary kind of optional inserts, is responsible for interface board and other circuit isolation that sensor interface gathered, and every kind of interface board is responsible for certain / the collection algorithm of type sensor, mark and the relevant parameter storage on corresponding the interface board, furthest reduces the cost of maring again and setting up.
Assignee/Applicant
Shandong Dongrun Instrument Science & Technology Co.,Ltd.
Link(s) to Patent
China Patent
Patent Title
A Satellite Fault Diagnosis Method Based on Naive Bayesian Algorithm for Discrete Data
Patent Number & Issued Date
CN201410395173.8
February 15, 2017
Inventor Names
Yu Peng, Datong Liu*, Sijie He, Jingyue Pang, Xiyuan Peng
*Indicates IMS member
Abstract
A satellite fault diagnosis method based on naive Bayesian algorithm for discrete data belongs to the field of satellite fault diagnosis technology. The present invention solves the problem of unbalanced existing non-fault samples and non-fault samples, resulting in low accuracy of satellite fault diagnosis, low stability and low efficiency of fault classification. The technical points are as follows: the statistics and preprocessing of satellite event type status monitoring data; the posterior probability of event features are determined; and the posterior probability of each state of satellite is calculated according to the posterior probability of event feature, and the statistical matrix is transformed into the probability matrix; Determine the posterior probability of the satellite state; determine the prior probability of the fault; adjust the prior probability of each fault type to achieve a reasonable balance between the false detection rate and the missed detection rate of the fault diagnosis method; determine the posterior probability of the fault, The type of the fault with the highest probability of detection is the type of fault diagnosed in this state. The invention is directed to discrete data and is applicable to the fault diagnosis of complex systems such as satellite.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
Method and Device for Impedance Analysis with Binary Excitation
Patent Number & Issued Date
EE05788 / US 2016305996
February 15, 2017
Inventor Names
O.Martens*, R.Land, M.Min* , P.Annus*, M.Reidla
*Indicates IMS member
Abstract
The object of the invention is a method and device for impedance analysis with binary excitation, with improved accuracy, where the nonidealities of the sampling and preprocessing of the response signal (including aliasing effects) are taken into account by using of the overall system model with equivalent circuit diagrams of the analyzed object and the model of the preliminary analysis of the response signal. The result of the analysis is the equivalent circuit diagram with component values with the best match of the overall model analysis and of the preliminary analyze of the response signal. Further, the result of the analysis can be the impedance frequency response or the classifier of the analyzed object.
Assignee/Applicant
Tallinn University of Technology; Eliko CC Ltd
Link(s) to Patent
Estonian Patent / US Patent
Patent Title
A sun Model evaluation method that has the Sun Sensor simulator of CAN- Bus interface and adopt the simulator to realize
Patent Number & Issued Date
CN201410668261.0
February 1, 2017
Inventor Names
Guangquan Zhao, Qijia Tang, Datong Liu*, Huayi Li, Shuai Xu, Xiaochun Sun, Qiangqiang Ge
*Indicates IMS member
Abstract
A sun Model evaluation method that has the Sun Sensor simulator of CAN- Bus in- terface and adopt the simulator to realize belongs to satellite simulation test field. Can not be direct mutual with the spaceborne computer in order to solve the Sun Sensor simulator that the tradition gives first place to with the analog quantity electrical characteristics, need carry out corresponding AD conversion at the signal processing unit, the transmission speed is slower, just can only process set model, does not possess according to real-time condition parameter replacement problem. The dynamic calculation machine pours into periodic data to S_RS485 Data Analysis module into and carries out the Data Analysis, by the analytic sunny vectorial data of S_RS485 Data Analysis module, erupts simultaneously and sends data processing module processing back to, send the DSP through the FPGA_DSP interface module and carry out the Model evaluation, and rethread FPGA_DSP interface module returns for the data processing module resolving as a result, and send away through the ACAN interface module. It mainly is used in satellite simulation test field.
Assignee/Applicant
Harbin Institute of Technology
Link(s) to Patent
China Patent
Patent Title
IR Detector Array Device
Patent Number & Issued Date
US 20170221959A1
Issued August 3, 2017
Inventor Names
Florin Udrea, Syed Zeeshan ALI, Richard Henry Hopper, Julian Gardner, Andrea De Luca*
*Indicates IMS member
Abstract
We disclose herein a thermal IR detector array device comprising a dielectric membrane, supported by a substrate, the membrane having an array of IR detectors, where the array size is at least 3 by 3 or larger, and there are tracks embedded within the membrane layers to separate each element of the array, the tracks also acting as heatsinks and/or cold junction regions.
Assignee/Applicant
Ams Sensors Uk Ltd
Link(s) to Patent
US Patent
Patent Title
DIMM Connector Region Vias and Routing
Patent Number & Issued Date
US 9,444,162 (13 September 2016); US 9,548,551 (17 January 2017); US 9,627,787 (18 April 2017)
Inventor Names
W. Becker, W. Brodsky, M. Cocchini, M. Cracraft*
*Indicates IMS member
Abstract
A dual in-line memory module (DIMM) connector system is provided. The DIMM connector system includes a motherboard, a DIMM card and a connector by which the DIMM card is coupled with the motherboard. The motherboard includes a printed circuit board (PCB) formed of a mid-loss dielectric constant material, signal pads that are thinner than ground pads, ground pads disposed proximate to signal pads, signal vias connected to distal edges of signal pads and shared antipads. The DIMM card includes a printed circuit board (PCB) formed of a mid-loss dielectric constant material, signal pads that are thinner than ground pads, signal vias connected to distal edges of signal pads and shared antipads for respective pairs of signal vias.
Assignee/Applicant
International Business Machines Corporation
Link(s) to Patent
US Patent
Patent Title
Mitigation of EMI/ESD-Caused Transmission Errors on an Electronic Circuit
Patent Number & Issued Date
US 9,548,773
January 17, 2017
Inventor Names
D. Cadigan, S. Connor, M. Cracraft*, W. Huott, A. McPadden, A. Saetow, G. Tressler
*Indicates IMS member
Abstract
A method detects and mitigates harm caused by electromagnetic interference (EMI) to digital transmissions within an electronic circuit. One or more processors check for an initial transmission error during an initial digital transmission between a digital transmitter and a digital receiver on an electronic circuit. In response to detecting the initial transmission error, the processor(s) receive electromagnetic interference (EMI) detection signals from one or more EMI detectors. In response to determining that the EMI detection signals represent an EMI level that exceeds a predetermined value, the processor(s) identify an EMI anomaly source on the electronic circuit and adjusts the EMI anomaly source until the EMI level has been reduced to a nominal level. A copy of the initial digital transmission is then resent from the digital transmitter to the digital receiver. If no transmission error reoccurs, then the EMI anomaly source is kept in the adjusted state.
Assignee/Applicant
International Business Machines Corporation
Link(s) to Patent
US Patent
Patent Title
Non-Permanent Termination Structure for Microprobe Measurements
Patent Number & Issued Date
US 9,702,906 (11 July 2017), US 9,915,682 (13 March 2018)
Inventor Names
M. Cocchini, M. Cracraft*, J. Natesan, J. Torok
*Indicates IMS member
Abstract
A structure and method of facilitating testing of an electronic device (device under test or DUT) using a non-permanent and reusable structure to terminate contact pads and contact pin holes on a surface of the DUT.
Assignee/Applicant
International Business Machines Corporation
Link(s) to Patent
US Patent
Patent Title
Resonant compensating loop for shielding of metal for magnetically coupled NFC and/or RFID devices, and methods of making and us
Patent Number & Issued Date
US 9755309 B2
September 5, 2017
Inventor Names
M. Cocchini, M. Cracraft*, K. McMillan, A. Shahani, J. Torok
Abstract
A near field communication device, and methods of manufacturing and using the same. The near field communication device includes a receiver configured to convert a received near field signal to an electric signal, a transmitter configured to generate a transmittable near field signal, a dielectric substrate within a housing, an antenna on the dielectric substrate, and a compensating loop within the housing and coupled to the antenna. The antenna is configured to receive the received near field signal and to transmit or broadcast the transmittable near field signal. The compensating loop is electromagnetically coupled to the antenna and advantageously mitigates or counteracts an electromagnetic effect of metal on or near a surface of the dielectric substrate opposite from the antenna.
Assignee/Applicant
Thin Film Electronics ASA , Oslo, Norway
Link(s) to Patent
UK Patent
2016
Patent Title
Sensor incorporating multiferroic materials for detecting both electric and magnetic fields
Patent Number & Issued Date
9,470,733
October 18, 2016
Inventor Names
Baglio* Salvatore, Andò* Bruno, Bulsara Adi Ratan, Beninato Angela, Emery Teresa
Abstract
A sensor for detecting both magnetic fields and electric fields can include at least one Sawyer-Tower (ST) circuit that can incorporate a multiferroic capacitor. An odd number of ST circuits coupled together in a ring configuration, so that for each ST circuit, the output of one ST circuit is an input to another of the ST circuits. The multiferroic capacitors can include a multiferroic layer that can be deposed on a substrate. For each multiferroic capacitor, the deposition process can cause an inherent amount of impurities in the multiferroic layer. The number of said odd number of ST circuits to be coupled together is chosen according to the amount of impurities, to "forgive" the impurities. The higher the level of impurities in the multiferroic layers, that more ST circuits that are required in the ring to achieve the same sensor sensitivity. BDFO can be chosen for the multiferroic material.
Assignee/Applicant
The United States of America, as Represented by the Secretary of the Navy (Washington, DC)
Link(s) to Patent
US Patent
Patent Title
Extremely Efficient Multilayer PCB Technology Based Positive Ion Detector and Its Applications
Patent Number & Issued Date
201641040109 A
November 24, 2016
Inventor Names
Dr. C. S. Sureka and P. Venkatraman
Abstract
An instrument with clustered detectors to detections three-dimensionally in nanometric scaling under various gaseous media was fabricated and characterized. The sensitive part of the instrument namely 3D ion detector consists of multiple layers of metal strips with core wire to capture signal that separated by FR4 dielectric material and it is placed on a cathode made up of an insulating material coated with an electrical conductor. This 3D ion detector is optimized to enhance the performance of the instrument in terms of its detection efficiency, charge collection, magnitude, and probability to measure ionization cluster size distribution and drift time etc. The optimized detector structure is disclosed as 3.483 mm thick detector consists of multiple layers of gold strips separated by FR4 dielectric material, tungsten coated copper as core wire and gold coated ceramic as its cathode. Further, the suitability of the detector to use in the field of Radiation protection, Gamma spectrometry, Gas sensor, Radiation biology and Oncology is confirmed.
Assignee/Applicant
Bharathiar University
Link(s) to Patent
India Patent
Patent Title
Method and apparatus for obtaining cardiovascular information by measuring between two extremities
Patent Number & Issued Date
US 9,510,761 B2
December 6, 2016
Inventor Names
Ramon Pallàs Areny, Ramon Casanella Alonso, Joan Gómez Clapers
Abstract
A method and an apparatus for obtaining information on a cardiovascular system beat by beat and continuously which are based exclusively on measurements between two limbs and effected with a pair of distal electrodes on each limb. The measurement is made by causing an alternating current to flow between one electrode of each limb and measuring the potential difference between the other two electrodes, one also on each limb. This potential difference has a low frequency component which is an electrocardiogram (ECG) and another component having a frequency of the injected alternating current and from which an impedance plethysmogram (IPG) is extracted. The cardiovascular information is determined by measuring the time interval between any predefined characteristic element of the ECG and one of the IPG.
Assignee/Applicant
Universitat Politècnica de Catalunya
Link(s) to Patent
US Patent
Patent Title
Passive Magnetic Ranging For SAGD and Relief Wells Via a Linearized Trailing Window Kalman Filter
Patent Number & Issued Date
US 9,422,803
August 23, 2016
Inventor Names
Francis Chad Hanak, Robert A. Estes*
*indicates IMS member
Abstract
A method of drilling a well is disclosed. A first estimate is obtained of a location of the well with respect to a reference well at a selected depth. A magnetic measurement is related to a residual magnetic charge distribution in the reference well. An expected value of the magnetic measurement at the selected depth is determined from the residual magnetic charge distribution. A second estimate is obtained of the location of the well using the first estimate of the location, the obtained magnetic measurement and the expected value of the magnetic measurement. A drilling parameter of the well is altered using the second estimate of the location.
Assignee/Applicant
Baker Hughes Incorporated, Houston, TX (US)
Link(s) to Patent
US Patent
Patent Title
Free-Hand Scanning and Imaging
Patent Number & Issued Date
US 9,316,734
April 19, 2016
Inventor Names
Joseph T. Case*, Mohammad Tayeb Ghasr*, and Reza Zoughi*
*indicates IMS member
Abstract
Wideband synthetic aperture radar (SAR) imaging. A probe transmits a signal through its aperture incident to an object located in a medium of interest remotely from the probe. The probe receives through the aperture a plurality of nonuniformly sampled reflected signals from the object as the probe moves in a measurement plane located a predetermined distance from the object. A processor executes a SAR-based reconstruction algorithm to generate an image.
Assignee/Applicant
The Curators of the University of Missouri, Columbia, MO (US)
Link(s) to Patent
US Patent
Patent Title
Controlled Needle-free Transport
Patent Number & Issued Date
US9308326B2
April 12, 2016
Inventor Names
I. W. Hunter, A. J. Taberner*, B. D. Hemond, D. M. Wendell, N. C. Hogan, N. B. Ball
*indicates IMS member
Abstract
A needle-free transdermal transport device for transferring a substance across a surface of a biological body includes a reservoir for storing the substance, a nozzle in fluid communication with the reservoir and a controllable electromagnetic actuator in communication with the reservoir. The actuator, referred to as a Lorentz force actuator, includes a stationary magnet assembly and a moving coil assembly. The coil assembly moves a piston having an end portion positioned within the reservoir. The actuator receives an electrical input and generates in response a corresponding force acting on the piston and causing a needle-free transfer of the substance between the reservoir and the biological body. The magnitude, direction and duration of the force are dynamically controlled (e.g., servo-controlled) by the electrical input and can be altered during the course of an actuation cycle. Beneficially, the actuator can be moved in different directions according to the electrical input.
Assignee/Applicant
Massachusetts Institute of Technology
Link(s) to Patent
US Patent
Patent Title
Electricity meter having multiple hall devices
Patent Number & Issued Date
US9250270
February 2, 2016
Inventor Names
Vincent Mosser*, Youcef Haddab, David Nelson Makinson, Steven Grey
*indicates IMS member
Abstract
Disclosed is a metrology assembly that utilizes a multi-Hall effect device configuration which eliminates the necessity of a magnetic concentrator. In some embodiments, the metrology assembly includes a substrate or support platform configured to support at least two Hall effect devices per phase of an electricity meter. The metrology assembly may further include one or more electrical conductors coupled to the substrate and configured to conduct electric current. The at least two Hall effect devices may be coupled to the substrate at opposing sides of an associated electrical conductor, each Hall effect device being configured to detect a magnetic field created by the electric current of the associated electrical conductor, and to generate an output.
Assignee/Applicant
Itron, Inc.
Link(s) to Patent
US Patent
Patent Title
Electronic Coaster
Patent Number & Issued Date
US 9,432,758
August 30, 2016
Inventor Names
Justin Curtis Kirk*
*indicates IMS member
Abstract
An electronic coaster, configured to respond to pressure and sound; the electronic coaster comprising: a case, further comprising a flexible top; wherein the flexible top is configured to deflect upon receiving pressure on the flexible top; and a circuit board attached to the case and configured to receive power from a power source and an audio signal from an audio cable; wherein the circuit board is configured to engage a plurality of light emitting elements when pressure is applied to the flexible top and an audio signal is played through the circuit board; wherein the circuit board further comprises: a three way bandpass filter electrically coupled to a switching circuit and a power circuit; wherein the switching circuit further comprises pressure circuit that operates a variable resister within switching circuit; wherein the switching circuit is open when either there is insufficient pressure on a pressure sensor in the pressure circuit or there is an either no signal in a range in the three way bandpass filter.
Assignee/Applicant
Justin Curtis Kirk
Link(s) to Patent
US Patent
Patent Title
Methods for Transmitting a Waveform Having a Controllable Attenuation and Propagation Velocity
Patent Number & Issued Date
EP 1540844
April 13, 2016
Inventor Names
Robert H. Flake* and John F. Biskup
*indicates IMS member
Abstract
Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin=D*exp{−Asd(x−vsd*t)}, where D is a magnitude, Vin is a voltage, t is time, Asd is an attenuation coefficient, and Vsd is a propagation velocity; and (b) being truncated at a maximum value. An exemplary apparatus comprises: an exponential waveform generator; an input recorder coupled to an output of the exponential waveform generator; a transmission line under test coupled to the output of the exponential waveform generator; an output recorder coupled to the transmission line under test; an additional transmission line coupled to the transmission line under test; and a termination impedance coupled to the additional transmission line and to a ground.
Assignee/Applicant
Board of Regents, University of Texas System
Link(s) to Patent
US Patent
Patent Title
Time synchronization and controlled asynchronization of remote trigger signals
Patent Number & Issued Date
US9331842
May 3, 2016
Inventor Names
Robert H. Flake*
*indicates IMS member
Abstract
A mechanism is disclosed for transmitting pulses onto respective cables so that the pulses arrive at the remote ends of the respective cables in synchronized (or controllably asynchronized) fashion. First, the round-trip time of flight of each cable is measured using speedy delivery pulses, i.e., pulses whose leading edges have exponential shape. Second, a calculation is performed to determine the input delay(s) between the pulses that would produce desired output delay(s). For example, it may be desirable that the pulses arrive at the respective remote ends at the same time, in which case the desired output delay(s) is (are) zero. Third, the same speedy delivery pulses are transmitted onto the respective cables so that the interpulse delay(s) conform to the computed input delay(s). Thus, the desired output delay(s) are achieved at the remote ends of the cables.
Assignee/Applicant
Board of Regents, University of Texas System
Link(s) to Patent
US Patent
Patent Title
Three-Dimensaional Holographical Imaging
Patent Number & Issued Date
Australian 2013337368
September 22, 2016
Inventor Names
Mohammad Tayeb Ghasr*, and Reza Zoughi*
*indicates IMS member
Abstract
A holographic imaging system including a transmission line coupled to an antenna at one end and to a signal source at another end. The antenna defines an aperture through which a signal generated by the signal source is transmitted incident to an object located remotely from the aperture and through which a signal reflected from the object is received by the antenna aperture. A standing wave probe phase-referenced to the antenna aperture samples the reflected signal. A detector connected to the standing wave probe receives the sampled reflected signal and provides an output signal that represents a real-valued signal proportional to an in-phase component of the reflected signal from the object. A processor executes an imaging algorithm for generating a multi-dimen sional profile representative of the object based on the output signal from the detector.
Assignee/Applicant
The Curators of the University of Missouri, Columbia, MO (US)
Link(s) to Patent
Australian Patent
Patent Title
Waveguide Probe for Nondestructive Material Characterization
Patent Number & Issued Date
US 9,482,626
November 1, 2016
Inventor Names
Mohammad Tayeb Ghasr*, M. Kempin, and Reza Zoughi*
*indicates IMS member
Abstract
An open-ended waveguide probe including a finite flange extending outwardly and functioning as an infinite flange. A signal source provides a microwave signal to the waveguide, which in turn transmits microwave electromagnetic energy incident upon an object to be tested. The finite flange at the waveguide's aperture is shaped to reduce scattering of the electromagnetic field reflected from the object and received by the aperture. The probe is adapted for coupling to a receiver for sampling the reflected electromagnetic field received by the aperture and the receiver is adapted for coupling to a processor for determining at least one material characteristic of the object based on sampled electromagnetic field reflected from the object.
Assignee/Applicant
The Curators of the University of Missouri, Columbia, MO (US)
Link(s) to Patent
US Patent
Patent Title
Tire Inspection Using Microwave Imaging Methodologies
Patent Number & Issued Date
US 9,482,627
November 2016
Inventor Names
Reza Zoughi* and Mohammad Tayeb Ghasr*
*indicates IMS member
Abstract
A method of inspection of a tire was developed using microwave imaging comprising the steps of selecting a plurality of regions from within a tire to be imaged; determining the dielectric properties of the tire components in each of the selected regions in a plurality of frequency bands; selecting a specific location on a tire to be imaged; providing a scanning platform for microwave imaging of the tire; imaging the selected location on a tire using microwave imaging at a plurality of microwave scanning frequencies and at a selected microwave polarization to obtain images of the internal state of the sample; and filtering the images to remove the effects of curvature of the selected location of the tire.
Assignee/Applicant
Michelin Recherche Et Technique S.A., Compagne Generale Des Etablissements Michelin, France
Link(s) to Patent
US Patent
Patent Title
Measurement While Drilling Spontaneous Potential Indicator Using Differential Magnetometers
Patent Number & Issued Date
US 9,411,065
August 9, 2016
Inventor Names
Robert A. Estes*
*indicates IMS member
Abstract
A drilling system, method and drilling apparatus for determining a parameter of a formation at a downhole location is disclosed. A member having a longitudinal axis is disposed in a borehole at the downhole location. A first magnetometer and a second magnetometer are disposed at an axial location of the member as separate azimuthal locations around the member and oriented tangential to a circumference of circle in a plane transverse to a longitudinal axis of the member. Magnetic fields resulting from a current flowing longitudinally through the member due to a spontaneous potential in the formation are measured to determine the spontaneous potential. The parameter of the formation is determined from the determined spontaneous potential.
Assignee/Applicant
Baker Hughes Incorporated
Link(s) to Patent
US Patent
Patent Title
High-reliability holdover method and topologies
Patent Number & Issued Date
US 9362926
June 7, 2016
Inventor Names
William J. Dickerson*, Robert T. Dickerson
Abstract
System and methods for a clock system disciplined to an external reference. In one embodiment, the clock includes a flywheel oscillator controlled by the external reference and a free running holdover oscillator. The holdover oscillator provides increased accuracy during periods of holdover when the external reference is not available. In a further embodiment, the flywheel oscillator is additionally controlled by a phase-locked loop with the holdover oscillator frequency as input, and a control switch for switching the flywheel oscillator to analog control if the phase-locked loop exhibits a fault.
Assignee/Applicant
Arbiter Systems, Inc.
Link(s) to Patent
US Patent
Patent Title
Electricity meter having multiple hall devices
Patent Number & Issued Date
US9910071
January 7, 2016
Inventor Names
Vincent Mosser*, Youcef Haddab, David Nelson Makinson, Steven Grey
Abstract
Disclosed is a metrology assembly that utilizes a multi-Hall effect device configuration which eliminates the necessity of a magnetic concentrator. In some embodiments, the metrology assembly includes a substrate or support platform configured to support at least two Hall effect devices per phase of an electricity meter. The metrology assembly may further include one or more electrical conductors coupled to the substrate and configured to conduct electric current. The at least two Hall effect devices may be coupled to the substrate at opposing sides of an associated electrical conductor, each Hall effect device being configured to detect a magnetic field created by the electric current of the associated electrical conductor, and to generate an output.
Assignee/Applicant
Itron, Inc.
Link(s) to Patent
US Patent
Patent Title
Detection of Electromagnetic Field with Electroactive Polymers
Patent Number & Issued Date
US 9,804,216
October 31, 2016
Inventor Names
S. Connor, M. Cracraft*, J. Jackson, J. Kuczynski
Abstract
Embodiments relate to a method, apparatus, and system for passively detecting strength of an electromagnetic field. An electroactive polymer (EAP) is configured with an antenna in communication with an RC circuit. The EAP is positioned proximal to a sensor. In response to receipt of a transient electromagnetic pulse due to an electrostatic discharge, the circuit captures the received pulse and transmits the pulse to the EAP. The EAP reacts to the pulse in the form of a deflection. The magnitude of the deflection correlates to the field strength which caused the received pulse. As deflection of the EAP is communicated to the proximally positioned sensor, a recording of the electrostatic discharge takes place.
Assignee/Applicant
International Business Machines Corporation
Link(s) to Patent
US Patent
2015
Patent Title
Plasmonic IR Devices
Patent Number & Issued Date
US 9214604B2
December 15, 2015
Inventor Names
Syed Zeeshan ALI, Florin Udrea, Julian Gardner, Richard Henry Hooper, Andrea De Luca*, Mohamed Foysol CHOWDHURY, Ilie Poenaru
*Indicates IMS member
Abstract
An infra-red (IR) device comprising a dielectric membrane formed on a silicon substrate comprising an etched portion; and at least one patterned layer formed within or on the dielectric membrane for controlling IR emission or IR absorption of the IR device, wherein the at least one patterned layer comprises laterally spaced structures.
Assignee/Applicant
AMS Sensors UK
Link(s) to Patent
US Patent
Patent Title
Electric Welding Machine Having A Power Circuit To Limit Voltage Fluctuations Induced In The Mains
Patent Number & Issued Date
EP 2329904 (B1)
August 7, 2015
Inventor Names
Gabrio Superti-Furga, Enrico Tironi, Sergio Toscani*
*Indicates IMS member
Abstract
The present invention concerns an electric welding machine having a power circuit for supplying power to the welding machine from the mains. The power circuit comprises: an AC/DC converter stage (2), designed to receive an AC voltage (V AC ) from said mains at its input and to generate a first DC voltage (V rect ) at its output; an up converter stage (3), designed to receive said first DC voltage (V rec t) at its input and to generate a second DC voltage (V DC ) at its output; an output stage (10) in electric communication with said up converter stage (3), and designed to generate an output voltage (V sal ) suitable for the welding process at its output, and a pair of output terminals (4A, 4B) designed to have a load connected thereto, said output voltage (V sal ) being available at said output terminals. The invention is characterized in that it comprises control means (6) for controlling said up converter stage (3) as a function of the value of a reference signal (Iref), check means (20) being provided for generating said reference signal (Iref), which are configured to receive at their input at least the value of said second voltage (V DC ) on said energy accumulation means (5), so that said energy accumulation means (5) are able to absorb power changes of said mains as said output voltage (V sal ) changes, due to the power absorbed by the load, to limit a voltage fluctuation induced in said mains.
Assignee/Applicant
CEA Costruzioni Elettromeccaniche Annettoni S.p.A., Politecnico di Milano