Including Means To Establish Plural Distinct Current Levels (e.g., High, Low) Patents (Class 361/154)
  • Patent number: 10937604
    Abstract: The invention relates to a switching device for a MV electric power distribution network. The switching device comprises electric contacts, which are electrically connectable to a conductor of said electric power distribution network, and a control unit. The switching device comprises signalling means emitting visible light externally to said switching device, said signalling means being controlled by said control unit.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: March 2, 2021
    Assignee: ABB Schweiz AG
    Inventors: Leandro Vacirca, Angelo Cleber, Luciano Di Maìo
  • Patent number: 10920768
    Abstract: The performance of a solenoid drive liquid pump can be very dependent on the magnitude and stability of an input voltage, with non-ideal input power resulting in loss of efficiency and potential damage to the pump. Pulse width of drive signals provided to the pump, which cause solenoids to alternately energize to move liquid through the pump, may be adjusted in duration in order to compensate for non-ideal input voltage. A drive control module of the pump gathers voltage information, determines an improved pulse width based upon that voltage information, and then provides drive signals based upon the improved pulse width. Operating in this manner, a pump can operate at or near peak efficiency despite both significant variances in input voltage and non-sinusoidal input voltage, and without customized components or adapters.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: February 16, 2021
    Assignee: Milton Roy, LLC
    Inventors: Jason Carman, Nile Fairfield
  • Patent number: 10907562
    Abstract: Various embodiments include a method for controlling a pressure dissipation valve comprising a closure element, a spring applying a spring force urging the closure element toward the closed position, and an electromagnetic actuator responding to an applied voltage to urge the closure element to an open position. The method may include: applying a constant voltage until the closure element begins motion counter to the spring force; immediately ending the voltage upon the beginning of motion; thereafter, applying a pulsed voltage to the actuator to induce a substantially constant holding-open current intensity; maintaining the pulsed voltage for a predetermined duration to hold the closure element open; and interrupting the application of voltage after the predetermined duration, wherein the closure element moves into the closed position as a result of the spring force.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: February 2, 2021
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Tet Kong Brian Chia, Thomas Kraft, Andreas Bodensteiner, Walter Sassler
  • Patent number: 10909051
    Abstract: Method and apparatus for managing a non-volatile memory (NVM). In some embodiments, a memory module has a memory module electronics (MME) circuit configured to program data to and read data from solid-state non-volatile memory cells of the NVM. A controller is adapted to communicate commands and data to the MME circuit via an intervening data bus. The controller operates to reset the MME circuit by issuing a reset command to the MME circuit over the data bus, activating a decoupling circuit coupled between the data bus and a reference line at a reference voltage level to remove capacitance from the data bus resulting from the reset command, and subsequently sensing a voltage on the data bus. In some cases, multiple MME circuits and NVMs may be arranged on a plurality of flash dies which are concurrently reset by the controller.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: February 2, 2021
    Assignee: Seagate Technology LLC
    Inventor: Timothy Canepa
  • Patent number: 10867734
    Abstract: A plurality of inductive loads (105) are connectable in parallel with one another between first and second terminals (120, 125), to which a controllable voltage (205) is applied. A method (300, 400) for operating the loads (105) includes the steps of detecting (305, 405) the connection of a previously non-energized load (105) between the terminals (120, 125); setting (310, 410, 435) the voltage (205) to a predetermined first value (210), and, after the lapse of a predetermined time interval (315, 415), adjusting the voltage (205) to a predetermined second value (215), with the second value (215) being lower than the first value (210).
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: December 15, 2020
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Florian Weinl, Christoph Stritt, Ulrich Schmidt
  • Patent number: 10847965
    Abstract: A thermal protection switch device may include: a power circuit that includes a phase line and a neutral line; a current sensor electrically connected to the phase line to detect the current flow in the phase line; a temperature sensor thermally coupled to the phase line to detect the temperature of the phase line; and another temperature sensor thermally coupled to the neutral line to detect the temperature of the neutral line. The device also includes a trip circuit configured to interrupt the phase line when activated and a controller configured to receive output signals from the above current and temperature sensors. The controller may activate the trip circuit to interrupt the phase line in response to determining that certain conditions have occurred.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: November 24, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Lin Yang, Tao Xiong, Chuanchuan Zhuang, Xianzhen Zhang, Fengguo Zhang
  • Patent number: 10837574
    Abstract: A drive circuit for controlling a solenoid valve having a solenoid coil and a poppet that translates therein is provided. The drive circuit includes a first node, a second node, a control circuit, and a flyback circuit. The first node is configured to be energized by a power source to a first voltage. The control circuit is coupled to the first and second nodes, and is configured to: (1) selectively couple the first and second nodes in series with the solenoid coil, and periodically energize the solenoid coil using a pulse-width-modulated (PWM) signal having a frequency and a duty cycle configured to regulate a current conducted through the solenoid coil. The flyback circuit is coupled to the solenoid coil and configured to energize the second node to a second voltage with energy stored in the solenoid coil.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: November 17, 2020
    Assignee: Capstan Ag Systems, Inc.
    Inventor: Kale Schrader
  • Patent number: 10816365
    Abstract: A method for automatically calibrating an engine camshaft sensor, the sensor measuring variations in magnetic field value and delivering an electrical signal having a high state after the passage of the values of the magnetic field above the switching threshold on a rising edge and a low state after the passage of the values of the magnetic field below the switching threshold on a falling edge. After the passage of the values of the magnetic field above the switching threshold and measuring a new maximum value, the electrical signal remains in a high state as long as the magnetic field values are higher than a hysteresis threshold, which is dependent on the amplitude of the magnetic field calculated with the measured new maximum value; after the passage of the values of the magnetic field below the hysteresis threshold, a new switching threshold is calculated according to the new maximum value.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: October 27, 2020
    Assignees: Continental Automotive France, Continental Automotive GmbH
    Inventor: David Mirassou
  • Patent number: 10804817
    Abstract: A circuit and a method of controlling a circuit is provided for an electronic control of an electromagnetic drive of an electromagnetic valve. The circuit provides a control signal for the electromagnetic drive which has a high level and a low level. The control signal comprises at least a first time interval having a first duty cycle, an optional second time interval having a second duty cycle, and a third time interval having a third duty cycle, the first, second and third duty cycles being less than one. The first duty cycle is greater than the second duty cycle and the second duty cycle is greater than the third duty cycle.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: October 13, 2020
    Assignee: Buerkert Werke GmbH & Co. KG
    Inventors: Markus Feinauer, Simon Kastner, Dinko Begovic, Sebastian Frank
  • Patent number: 10788040
    Abstract: The present invention relates to a method of operating an electric motor-driven centrifugal pump (3) in a hydraulic system (4) having at least one self-controlled load, where a gradient (dQakt/dt) of the volumetric flow rate (Qakt) of the centrifugal pump (3) is determined and the current set-point delivery head (Hsoll) of the centrifugal pump (3) is calculated from a mathematical operation on the gradient (dQakt/dt) weighted with a gain factor (K) and the last specified set-point delivery head (Hsoll,alt). The operation describes a positive feedback between the set-point delivery head (Hsoll) and the volumetric flow rate (Qakt). The gain factor (K) is determined from a calculation instruction that is modified dynamically during operation of the centrifugal pump (3) taking into consideration the current operating point of the centrifugal pump (3) and taking into consideration a current and/or at least one past state of the hydraulic system (4).
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: September 29, 2020
    Assignee: WILO SE
    Inventors: Jens Oppermann, Ana Constantin
  • Patent number: 10756720
    Abstract: A driver circuit for an electronic switch is described herein. According to one embodiment the driver circuit includes an input buffer with an input node for receiving a buffer input signal, a pull-down circuit coupled to the input node and a ground node, and a pull-up circuit coupled to the input node and a supply node. The driver circuit further includes control circuitry configured to activate either the pull-down circuit or the pull-up circuit. The pull-up circuit is activated when the voltage level of the buffer input signal is above a first threshold, and the pull-down circuit is activated when the voltage level of the buffer input signal is below a second threshold.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: August 25, 2020
    Assignee: Infineon Technologies AG
    Inventors: Christian Djelassi, Octavian Barbu, Markus Ladurner, Luca Petruzzi
  • Patent number: 10670009
    Abstract: A controller of an electromagnetically driven reciprocating pump influences velocity of the magnetic armature by switching voltage applied to the electromagnet depending on the position of the magnetic armature, its position determined from state variables of the electromagnet. A processor calculates electrical resistance of the magnetic coil from the voltage and current measured by the measuring device, and calculates the temporal change of the linked magnetic flux in the electromagnet from the electrical voltage, the current and the resistance of the magnetic coil, and calculates the linked magnetic flux in the electromagnet from an earlier magnetic flux and from the temporal change, and determines the position of the magnetic armature from the linked magnetic flux in the electromagnet and the electrical current through the magnetic coil, and switches the voltage at the magnetic coil by the switching device depending on the position of the magnetic armature.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: June 2, 2020
    Assignees: Thomas Magnete GmbH, TECHNISCHE UNIVERSITAT DRESDEN
    Inventors: Axel Müller, Thomas Kramer, Martin Petzold, Jürgen Weber, Olaf Ohligschlager
  • Patent number: 10648420
    Abstract: Various embodiments include a method for operating a fuel injector with a solenoid drive having a hydraulic stop at a predetermined fuel pressure comprising: applying a first current profile to the solenoid including a first holding current value prespecifying the current flowing during a holding phase; determining a resulting first flux; determining a first force based on the first flux corresponding to a hydraulic force exerted on the armature by fuel; determining a deviation between the first force and an optimal force corresponding to the predetermined fuel pressure; determining a second holding current based on the first holding current and the determined deviation; and applying a second current profile to carry out a second injection process using the second holding current value to apply a hydraulic force on the armature by the fuel adapted to the optimal force value.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: May 12, 2020
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Markus Stutika, Gerd Rösel
  • Patent number: 10599198
    Abstract: A load driving device is configured to reduce erroneous blocking operation in a switch. The load driving device includes: a control unit configured to output a driving signal and a non-driving signal; a first switch unit configured to switch power between a power supply unit and a load to a conductive state and a non-conductive state, and switch the power path to a conductive state when a difference between a potential of the first input line and a potential of a conducting path on the load side is greater than a predetermined value; and a second switch unit configured to connect a power supply to the first input line into a conductive state upon the control unit outputting the driving signal, and to block conduction between the power supply path and the first input line upon the control unit outputting the non-driving signal.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: March 24, 2020
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Takahiro Nagahama
  • Patent number: 10554102
    Abstract: In order to improve the adaptation of a long stator linear motor to requirements or conditions of individual transport units or of the transport track it is foreseen, that the control variables (StG) of a driving coil (7, 8) of long stator linear motor are superimposed with an excitation signal (AS) with a predetermined frequency band, wherein actual variables (IG) of the driving coil control are determined, from the control variables (StGAS) superimposed with the excitation signal (AS) and from the determined actual variables (IG) a frequency response is determined and from the frequency response the control parameters (RP) for this transport unit (Tx) are determined and the transport unit (Tx) is controlled using these determined control parameters (RP) for movement along the transport track.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: February 4, 2020
    Assignee: B&R INDUSTRIAL AUTOMATION GMBH
    Inventors: Andreas Weber, Joachim Weissbacher
  • Patent number: 10554111
    Abstract: In order to improve the adaptation of a long stator linear motor to requirements or conditions of individual transport units or of the transport track it is foreseen, that a movement profile is preset for the transport unit (Tx), which is followed by the transport unit (Tx), in doing so at least one system parameter of a model of the control system (21) is determined by means of a parameter estimation method, and the value of the system parameter over time is collected and from the variation over time a wear condition of the transport unit (Tx) and/or of the transport track is deduced.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: February 4, 2020
    Assignee: B&R INDUSTRIAL AUTOMATION GMBH
    Inventors: Andreas Weber, Joachim Weissbacher
  • Patent number: 10527188
    Abstract: A method for controlling the through-flow cross-section of a gas valve is described. The gas valve comprises a valve body in which a flow channel is provided, a valve element which can be displaced therein between a closed position and an opened position, an armature, a coil, a spring and a control circuit. For opening the flow channel, the control circuit excites the coil with a pulse width-modulated current, the pulse duty factor of which, starting from a starting value, is increased until the armature starts moving out of the closed position against the effect of the spring. Then, the control circuit reduces the pulse duty factor before the valve element has reached the opened position. The control circuit then sets the pulse duty factor at a predefined holding value with which the valve element is held in the opened position.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: January 7, 2020
    Assignee: TRUMA GERAETETECHNIK GMBH & CO. KG
    Inventor: Ulrich Hoeflinger
  • Patent number: 10511213
    Abstract: A solenoid assembly includes a solenoid actuator having a core. A coil is configured to be wound at least partially around the core such that a magnetic flux (?) is generated when an electric current flows through the coil. An armature is configured to be movable based on the magnetic flux (?). A controller has a processor and tangible, non-transitory memory on which is recorded instructions for controlling the solenoid assembly. The controller is configured to obtain a plurality of model matrices, a coil current (i1) and an eddy current (i2). The magnetic flux (?) is obtained based at least partially on a third model matrix (C0), the coil current (i1) and the eddy current (i2). Operation of the solenoid actuator is controlled based at least partially on the magnetic flux (?). In one example, the solenoid actuator is an injector.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: December 17, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Shifang Li, Thomas W. Nehl, Suresh Gopalakrishnan, Avoki Omekanda, Rashmi Prasad, Chandra S. Namuduri
  • Patent number: 10497501
    Abstract: An example apparatus may include a solenoid actuator with a solenoid coil and a corresponding solenoid armature. A plurality of switches may be coupled to the solenoid coil. A controller may be electrically coupled to the plurality of switches, the controller having a processor and a memory device coupled to the processor. The memory device may contain a set of instructions that, when executed by the processor cause the processor to receive a feedback signal corresponding to a condition of at least one of the solenoid coil and the solenoid armature; and generate a control signal to alter the state of at least one of the plurality of switches based, at least in part, on the received feedback signal.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: December 3, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jianying Chu
  • Patent number: 10416646
    Abstract: A control system for operation of an industrial machine includes a processor and a tangible, non-transitory, computer-readable memory communicating with the processor. The tangible, non-transitory computer-readable memory includes instructions that, in response to execution by the processor, cause the processor to perform operations including: receiving image data from an imaging device that monitors an image zone around the industrial machine, and analyzing the image data. The processor further performs operations including determining, based upon the analyzing, that the control system is functional, determining, based upon the analyzing, that the image data includes at least one of a predefined color, a predefined pattern, and a predefined shape, and transmitting a proximity signal to at least one relay module coupled between the processor and the industrial machine to halt operation of the industrial machine.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: September 17, 2019
    Assignee: SAFE TEK, LLC
    Inventors: Michael Graves, Joseph Graves
  • Patent number: 10393207
    Abstract: A damper system may include an electrically adjustable hydraulic shock absorber having an electromechanical valve and a damper controller. The damper controller may include a solenoid driver circuit electrically coupled to the electromechanical valve, and disposed at the shock absorber. The solenoid driver circuit may be operable to drive the electromechanical valve in an open state in which hydraulic fluid flows between a pressure tube and a reserve tube. The solenoid driver circuit may include a plurality of transistors that are operable to generate a first current to place the electromechanical valve in the open state and a second current less than the first current to hold the electromechanical valve in the open state.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: August 27, 2019
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Nikolay H. Iordanov, Craig Markyvech
  • Patent number: 10378497
    Abstract: A fluid metering valve includes a housing, an electromagnetic actuator that includes an armature that is separated from an inner wall of the housing by an annular gap, a throttle element connected to the armature or the housing and arranged in the annular gap to dampen a movement of the armature that is opposite to an opening direction, a valve seat surface, a valve closing body that cooperates with the valve seat surface to form a sealing seat, and a valve needle that (a) is actuatable by the actuator, (b) is arranged for actuating the valve closing body (c) extends through a borehole in the armature so that the armature is movably guidable on the valve needle, and (d) includes a stop arranged such that, during an actuation, the armature strikes against the stop in the opening direction to thereby open the sealing seat.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: August 13, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Andreas Schaad, Joerg Abel, Juergen Maier, Martin Buehner, Matthias Boee, Olaf Schoenrock, Philipp Rogler, Stefan Cerny
  • Patent number: 10262824
    Abstract: Operation coil drive device of electromagnetic contactor includes current detector and drive controller. The detector, when switching control is performed on operation coils of the contactor, detects coil current flowing through the coils. The controller controls an on/off time ratio of a semiconductor switching element wherein the on/off time ratio during close circuit control becomes larger than the on/off time ratio during holding control. Power supply voltage is switchingly applied to the coils at the on/off time ratio. The controller includes a determination locus setter and a close circuit state determiner. The setter sets a determination locus that continuously increases along a change locus of detected coil current during close circuit control. The determiner determines a contact point close circuit state by contact of a movable contact to a fixed contact based on deviation between the determination locus by the setter and the detected coil current detected.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: April 16, 2019
    Assignee: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.
    Inventors: Naoyuki Matsuo, Akira Morita, Takahiro Taguchi, Kosuke Ishibashi
  • Patent number: 10217586
    Abstract: The invention relates to a method for driving an electromagnetic actuator, which comprises a field winding for generating a magnetic field and a movable armature, wherein, in the method, in order to move the armature from a preset starting position into a preset end position, a magnetic flux is generated in the field winding and the magnetic flux through the field winding or a flux variable correlated with the magnetic flux through the field winding is measured so as to form an actual value. The invention provides that, in order to move the armature from the starting position into the end position, the magnetic flux through the field winding is regulated, namely in such a way that the characteristic of the actual value corresponds to a fixedly preset setpoint flux curve.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: February 26, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Andreas Hahn, Wolfgang Kuehn
  • Patent number: 10161339
    Abstract: The objective of the present invention is to correct deviation in the injection amount and changes in the injection timing when the voltage of a high-voltage source for a drive device decreases.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: December 25, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ryo Kusakabe, Tomoaki Horii, Shingo Kimura, Takaki Itaya, Mitsuru Nagase, Shirou Yamaoka
  • Patent number: 10036710
    Abstract: A low powered system for providing sufficient current to a fuel control mechanism drive. The system may have a fuel control mechanism pick circuit that has an energy storage mechanism for providing a large amount of current for a short time to the fuel control mechanism drive. A safety switch may be enabled with a special signal to let current flow to the fuel control mechanism drive to operate a corresponding fuel control mechanism for controlling fuel to a pilot light or heating element. The pilot light or heating element may provide heat to a thermoelectric source that generates electrical power from the heat. The electrical power may go to a single DC-to-DC converter and voltage clamp for providing a voltage source to a microcontroller and other circuits of the system. The pick circuit may prevent a harmful reverse flow of current from the storage mechanism to the thermoelectric source.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: July 31, 2018
    Assignee: Honeywell International Inc.
    Inventors: Brent Chian, David Kucera, Trevor C. Haag, Timothy J. Nordberg, Adam Foley
  • Patent number: 10035675
    Abstract: A solenoid device has a solenoid and a control portion. The solenoid has a body, a plunger, an attracting coil, a retaining coil, and a biasing member. The plunger is arranged selectively either in an attracted position, pulled into the body, or in a returning position, protruding out of the body. Fed with a voltage, the attracting coil generates an attracting force causing the plunger to move from returning position to attracted position. Fed with a voltage, the retaining coil generates a retaining force, weaker than the attracting force, causing the plunger to move to attracted position. The biasing member biases the plunger toward returning position. The control portion controls operation of the solenoid. When moving the plunger from returning position to attracted position, the control portion first starts applying the voltage to the retaining coil and then starts applying the voltage to the attracting coil.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 31, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Kei Maruyama
  • Patent number: 10003184
    Abstract: A backflow preventing device includes a backflow preventing element connected between a power source and a load, for preventing a backflow of a current from the load side to the power source side, a commutation device configured to perform a commutation operation of causing a current to flow through an other path connected in parallel to the backflow preventing element, and a controller configured to change a pulse width of a commutation drive signal for controlling the commutation device to perform the commutation operation based on a current flowing through the backflow preventing element, and transmitting the commutation drive signal having the changed pulse width to the commutation device. The controller transmits the pulse to the commutation device only for a necessary time period so that the commutation device performs the commutation operation, to thereby reduce electric power relating to the commutation operation not contributing to the power conversion.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: June 19, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takuya Shimomugi, Koichi Arisawa, Takashi Yamakawa, Keisuke Uemura, Shinsaku Kusube, Kenta Yuasa, Akihiro Tsumura
  • Patent number: 9911561
    Abstract: A DC solenoid coil current controller includes a rectifier, pulse width modulator, and power driver. The rectifier inputs an alternating current signal and a direct current signal, and outputs a rectified signal using at least one of the alternating current signal and the direct current signal. The pulse width modulator outputs a pulse width modulated signal in response to the rectified signal. The power driver controls a DC solenoid coil using the pulse width modulated signal, thereby enabling a direct current DC solenoid coil to be controlled in response to the alternating current signal. A method of controlling current to a DC solenoid coil is also disclosed.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 6, 2018
    Assignee: TARGET ROCK DIVISION OF CURTISS-WRIGHT FLOW CONTROL CORPORATION
    Inventors: Kevin Gerard Cordle, John Behm
  • Patent number: 9869263
    Abstract: A method of controlling a solenoid valve of an automotive system, the valve being charged by a pulse width modulated signal (PWM) and determining an actuation of an automotive system component is provided. The method comprises the following: determining a target end of command of the valve as a function of a PWM state and a time interval from a last change of PWM state; monitoring a current value, a PWM phase period and the PWM state of a last pulse width modulated signal; and correcting in the next pulse width modulated signal at least one of said current value and PWM phase period, so that a next end of command of the valve will occur at the target end of command.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: January 16, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Filippo Parisi, Paolo Casasso
  • Patent number: 9847197
    Abstract: The present invention discloses a protection module for a control and protective switching device, comprising a control power supply processing unit, an auxiliary power supply processing unit, a power supply converting unit, a signal processing and controlling unit, a trip electromagnet driving unit, a control electromagnet driving unit, and a man-machine interaction device. The control power supply processing unit and the auxiliary power supply processing unit receive a power supply signal from a high voltage power supply, and process the signal for supplying power for other components. The signal processing and controlling unit receives a mutual-induction signal from a current mutual inductor, outputs a first control signal and a second control signal to the trip electromagnet driving unit and the control electromagnet driving unit, and receives a first feedback signal and a second feedback signal from an operation mechanism and a control electromagnet.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 19, 2017
    Assignees: SEARI ELECTRIC TECHNOLOGY CO., LTD., ZHEJIANG CHINT ELECTRICS CO., LTD.
    Inventors: Changxun Gu, Di Zhang, Huiyu Ji, Ping Zeng, Feng Jia, Hong Xi
  • Patent number: 9837229
    Abstract: A method of controlling a circuit breaker that has a movable contact and an actuator for moving the movable contact between an open position and a closed position. With the movable contact in the open position, a voltage is applied to the actuator to cause the movable contact to move towards the closed position. The voltage is applied for a limited time period ending before the movable contact reaches the closed position. At the end of the limited time period, the voltage is adjusted to reduce the acceleration exerted on the contact. The voltage is subsequently increased just before, after, or substantially at the same time as the contact reaches its closed position.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: December 5, 2017
    Assignee: Tavrida Electric Holding AG
    Inventors: Alexey Chaly, Vladimir Ledyaev
  • Patent number: 9787315
    Abstract: A control device according to an embodiment includes a driving unit that supplies, to a control target, a current or a voltage on which an Alternating-Current (AC) component is superimposed, an Analog-to-Digital (AD) converter, and an AD conversion controller. The AD conversion controller causes, in an AC cycle of the AC component, the AD converter to execute a first AD conversion in synchronization with a starting timing of the AC cycle, and then to execute second and subsequent AD conversions at predetermined time intervals in response to a trigger by an internal timer of the AD converter.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: October 10, 2017
    Assignee: FUJITSU TEN LIMITED
    Inventors: Masatoshi Watanabe, Shigeto Umeyama, Masanori Akaza
  • Patent number: 9777660
    Abstract: A method for parameter estimation in an electromagnetic actuator having an electrical coil and an armature includes applying a voltage pulse to the electrical coil of the actuator prior to an actuator event and of sufficient duration to ensure that a resulting electrical current achieves steady state. At least one parameter of the actuator is estimated based upon the voltage pulse and the steady state current.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: October 3, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Chandra S. Namuduri, Suresh Gopalakrishnan, Thomas Wolfgang Nehl, Avoki M. Omekanda
  • Patent number: 9759590
    Abstract: A magnetic field generator (1) of a magnetic-inductive flowmeter for generating an alternating magnetic field running at least also perpendicular to the longitudinal axis of a measuring tube, wherein at least one field coil (2), a current regulator (3), a switching bridge (4) and a microcontroller (5) all form part of the magnetic field generator (1). Two different coil voltages are provided for the coil power supply, namely an initial voltage and a lower operating voltage, and a voltage selector (6) is provided for switching from the initial voltage to the operating voltage—and vice versa.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: September 12, 2017
    Assignee: KROHNE Messtechnik GmbH
    Inventors: Wilhelm Florin, Markus Dabrowski
  • Patent number: 9752990
    Abstract: A low powered system for providing sufficient current to a fuel control mechanism drive. The system may have a fuel control mechanism pick circuit that has an energy storage mechanism for providing a large amount of current for a short time to the fuel control mechanism drive. A safety switch may be enabled with a special signal to let current flow to the fuel control mechanism drive to operate a corresponding fuel control mechanism for controlling fuel to a pilot light or heating element. The pilot light or heating element may provide heat to a thermoelectric source that generates electrical power from the heat. The electrical power may go to a single DC-to-DC converter and voltage clamp for providing a voltage source to a microcontroller and other circuits of the system. The pick circuit may prevent a harmful reverse flow of current from the storage mechanism to the thermoelectric source.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: September 5, 2017
    Assignee: Honeywell International Inc.
    Inventors: Brent Chian, David Kucera, Trevor C. Haag, Timothy J. Nordberg, Adam Foley
  • Patent number: 9673704
    Abstract: A method and circuit for controlling current through an inductive load such as an electromagnetic valve of a vehicle anti-lock braking system includes first and second driver stages, controlled by PWM (pulse width modulation) signals, for providing, respectively, an actuation path for valve current in an “on” phase and a recirculation path for valve current in an “off” phase. A peak value of current flowing in the actuation path at the end of an “on” phase is compared with a peak value of current flowing in the recirculation path at the start of the “off” phase in order to detect any malfunction of the circuit. An embodiment of the invention has the advantage of being able to detect any malfunction at very low and very high PWM duty cycles.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: June 6, 2017
    Assignee: NXP USA, Inc.
    Inventors: Christelle Franchini, Alexis Huot-Marchand
  • Patent number: 9653200
    Abstract: An electromagnetic-valve controller includes a control switch, a control portion regulating a supply current supplied to the electromagnetic valve by controlling a drive of the control switch and controlling to open or close the electromagnetic valve, and a current detection portion detecting the supply current. The control portion controls the drive of the control switch based on a detection result of the current detection portion. The control portion controls the drive of the control switch by using a first pulse signal having a duty ratio that is variable, in a closed period. The control portion controls the drive of the control switch by using a second pulse signal maintaining the supply current to be constant so as to maintain the electromagnetic valve to be in the fully closed state, in a closed-state maintaining period.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: May 16, 2017
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Ito, Toshio Nishimura, Takeshi Akiyoshi
  • Patent number: 9593657
    Abstract: In a drive unit of a fuel injection device, an electric current is supplied to the fuel injection device by applying a high voltage to the fuel injection device from a high voltage source whose voltage is boosted to a voltage higher than a battery voltage at the time of opening a valve of the fuel injection device. Thereafter, the electric current supplied to the fuel injection device is lowered to a current value at which a valve element cannot be held in a valve open state by stopping the applying of the high voltage from the high voltage source. Thereafter, in a stage where a supply current is switched to a hold current, another high voltage is applied to the fuel injection device from the high voltage source.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: March 14, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Hideharu Ehara, Tohru Ishikawa, Takuya Mayuzumi, Kenji Hiraku
  • Patent number: 9528488
    Abstract: A method and a system for controlling idle stop of a vehicle that can reduce braking noise and prevent startup delay may be included, wherein the method for controlling may include estimating a disk temperature, determining whether the estimated disk temperature may be lower than or equal to a first predetermined temperature, and prohibiting engine stop according to the idle stop when the estimated disk temperature may be higher than the first predetermined temperature.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: December 27, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Sang Bum Goh
  • Patent number: 9500188
    Abstract: This disclosure relates to medical fluid cassettes and related systems and methods. In some aspects, a medical fluid cassette includes a base and a magnetically attractive member overlying a fluid pump chamber of the cassette. The magnetically attractive member defines a cavity sized and shaped to receive a portion of a piston.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: November 22, 2016
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: Tri Ly, Gurpreet Singh, Michael David Young
  • Patent number: 9448260
    Abstract: A method for determining the movement time curve of an electromagnetically driven armature of an actuator that has a coil may include: (a) applying to the coil a control signal dimensioned such that the armature undergoes only a partial deviation from the armature starting position without reaching an end position defined by a stop, and reaches the armature starting position again after reaching a turnaround position, wherein the deviation of the armature over time is described at least approximately by a section of a parabola at least between the turnaround position and the starting position, (b) determining the time at which the armature reaches the armature starting position again, (c) determining the speed with which the armature reaches the armature starting position again, and (d) ascertaining the movement time curve of the armature using a mathematical equation that describes the parabola based on the detected time and the detected speed.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: September 20, 2016
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Gerd Rösel
  • Patent number: 9435460
    Abstract: An actuator including actuator base, bobbin, and pole piece forming a pocket for a ferromagnetic armature located therein. The actuator including a radial magnet and a solenoid coil constructed and arranged to cause a linear displacement of the armature upon application of a coil drive current from a control circuit. The actuator may include a flexible membrane that partially encloses the armature to form an armature chamber filled with an incompressible fluid. In a valve design, a fluid flow is stopped by driving the membrane against a valve seat. Pressure from the controlled fluid in the conduit is transmitted through the membrane to the fluid within the armature chamber so that the armature does not need to counteract force applied to the membrane by the conduit fluid's pressure. A fluid flow is opened by driving the membrane away from the valve seat.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: September 6, 2016
    Assignee: SLOAN VALUE COMPANY
    Inventors: Kay Herbert, Xiaoxiong Mo, Fatih Guler, Natan E. Parsons
  • Patent number: 9413238
    Abstract: In a feed control apparatus that controls a feed state for an inductive load by controlling the opening and closing of a load opening and closing element connected in series to the inductive load, a free-wheeling circuit element employing a field effect transistor is connected in parallel to the inductive load so that a capacitor is charged by opening the free-wheeling circuit element when the load opening and closing element is closed and the free-wheeling circuit element is closed by charges charged to the capacitor when the load opening and closing element is opened. A connection is made in polarity in which a closed-circuit conduction direction in the free-wheeling circuit element is the same as a conduction direction in an internal parasitic diode of the free-wheeling circuit element, and the free-wheeling circuit element conducts backward by a small-capacity capacitor. Consequently, a voltage drop and a temperature rise are reduced.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: August 9, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Koji Hashimoto
  • Patent number: 9412544
    Abstract: A system and method for driving a relay circuit involves driving a relay circuit using a first driver circuit if a voltage of a battery supply for the relay circuit is lower than a voltage threshold and driving the relay circuit using a second driver circuit if the voltage of the battery supply for the relay circuit is higher than the voltage threshold.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: August 9, 2016
    Assignee: NXP B.V.
    Inventors: Clemens Gerhardus Johannes de Haas, Luc van Dijk
  • Patent number: 9267827
    Abstract: An excitation circuit, which is used in an electromagnetic flow meter, measures a flow rate value for a fluid, based on an electromotive force. An excitation coil, which is provided on an outside of a measurement tube, is supplied with an excitation current, where, in response, the electromotive force, which is perpendicular to a magnetic field of the excitation coil that is generated in the fluid within the measurement tube, is detected by a pair of electrodes provided on the measurement tube.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 23, 2016
    Assignee: AZBIL CORPORATION
    Inventors: Osamu Momose, Hideo Sawada, Ichiro Mitsutake, Yoshio Yamazaki
  • Patent number: 9196434
    Abstract: A diagnostic method for an actuator having a coil and a control device for supplying power to the coil, by controlling a power supply to the actuator by a diagnostic device, controlling a supply of power to the coil by a control device, monitoring an electric signal supplying the actuator, and deriving a diagnostic indicator of the actuator from a result of monitoring; and a device and computer code for executing the method.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: November 24, 2015
    Assignee: Schneider Electric Industries SAS
    Inventor: Mustapha Chelloug
  • Patent number: 9184657
    Abstract: A DC/DC converter includes an internal transistor and a current sensor that is operable to sense a current passing through the transistor. The DC/DC converter also includes an output current estimator module that estimates the output current based on the sensed transistor current.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: November 10, 2015
    Assignee: Hamilton Sundstrand Space Systems International, Inc.
    Inventors: David A. Fox, Jason A. Ohnemus
  • Patent number: 9127634
    Abstract: A method for determining the opening point in time of a control valve having a coil drive of an indirectly driven fuel injector for an internal combustion engine of a motor vehicle may include: detecting the time curve of the current intensity of a current flowing through the coil drive, determining a current integral with respect to the detected current intensity as a function of the time and starting from a defined initial time, and determining a time at which the current integral reaches at least a predefined current integral reference value, wherein the determined time is the opening point in time of the control valve. A corresponding device and a computer program for determining the opening point in time of a control valve of an indirectly driven fuel injector are also disclosed.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: September 8, 2015
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Martin Brandt, Christian Frankenberger
  • Patent number: 9103026
    Abstract: A magnetron sputtering system comprising a vacuum processing chamber having a chamber shield, a magnetron assembly, and a substrate, the magnetron assembly comprising a permanent magnetic assembly and an electromagnetic coil assembly, a first impedance circuit coupled between a power supply and the electromagnetic coil assembly, the first impedance circuit comprising a first resistor and a first capacitor, and a second impedance circuit having a second resistor and a second capacitor, and coupled between the substrate and a susceptor.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: August 11, 2015
    Assignee: APOLLO PRECISION BEIJING LIMITED
    Inventors: Randy Dorn, Jason Cheng, Hyung Paek