Including Means To Establish Plural Distinct Current Levels (e.g., High, Low) Patents (Class 361/154)
  • 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: 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: 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: 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
  • Patent number: 8925525
    Abstract: A fuel injection system of an internal combustion engine delivers fuel into a fuel rail via a high-pressure pump. The quantity of the delivered fuel is influenced by a quantity control valve operated by an electromagnetic operating device.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: January 6, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Rainer Wilms, Matthias Schumacher, Joerg Kuempel, Matthias Maess
  • Patent number: 8841874
    Abstract: An electrical stepper motor comprises a magnetical rotor and at least two electromagnetical driving coils for causing rotation of the rotator. A method of detecting an operating condition of the as e.g. a stall state of the electrical stepper motor comprises the steps of connecting one contact pin (P, M) of at least one of the electromagnetical driving coils via a high-impedance resistor (R1, R2) to a defined voltage source during a non-activated state of the driving coil, detecting a voltage induced at the driving coil during the non-activated state and converting the detected voltage into a digital signal, and digitally analyzing the digital signal and deriving an operating condition of the rotor by evaluation of the signal waveform including positive and negative components of the signal.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: September 23, 2014
    Assignee: Spansion LLC
    Inventors: Jens Wagner, Armin Dietrich, Kai Dieffenbach, Marco Bodenmüller, Jürgen Rohn, Wolfgang Wiewesiek
  • Patent number: 8833342
    Abstract: A method for regulating a fuel injection system of an internal combustion engine, wherein the fuel injection system includes a high-pressure pump which is associated with a quantity control valve having a solenoid valve electromagnetically operable by a coil for supplying fuel, the quantity control valve regulating the fuel quantity pumped by the high pressure pump and the coil of the solenoid valve being energized according to a setpoint current value in order to close the valve for supplying fuel to the high-pressure pump; when the solenoid valve closes, the setpoint current value is reduced from a first current setpoint value to a second current setpoint value so that an emission of audible noise generated when the solenoid valve closes during operation of the internal combustion engine is at least partially reduced.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: September 16, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Richter, Peter Roth, Joerg Kuempel, Matthias Maess
  • Publication number: 20140247532
    Abstract: A magnetic excitation circuit is used as a circuit for providing a magnetic excitation electric current based on a magnetic excitation power supply voltage to a magnetic excitation coil of an electromagnetic flow meter. The magnetic excitation circuit includes four voltage storing circuits that store and output a driving voltage that is charged by a common driving voltage. The voltage storing circuits are connected respectively between the control terminals and the output terminals of four switching elements. When the four switching elements are turned ON in relation to a positive interval or a negative interval, the four switching elements operate by the driving voltages that are outputted from the respective voltage storing circuits.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 4, 2014
    Applicant: Azbil Corporation
    Inventors: Osamu MOMOSE, Ichiro MITSUTAKE, Shinsuke MATSUNAGA, Taka INOUE, Masahide USHIYAMA
  • Patent number: 8725392
    Abstract: A device for controlling an injection valve actuator for an internal combustion engine has a voltage source, the voltage of which is high compared to the voltage of a vehicle battery and which is connected to the actuator by way of at least one controllable switch. A switching controller can be connected to the vehicle battery at the input end and it is connected to the voltage source at the output end to generate the high voltage from the voltage of the vehicle battery. The switching controller is designed in such a way that the high voltage of the voltage source is regulated to a higher value as the temperature increases.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: May 13, 2014
    Assignee: Continental Automotive GmbH
    Inventor: Stephan Bolz
  • Patent number: 8681468
    Abstract: A method of solenoid valve control includes measuring voltage across the solenoid valve and current through the solenoid valve, and using the results to aid in controlling the solenoid valve. For instance, one or both of the measured values may be used to determine when actual engagement of the solenoid valve occurs. An initial lower voltage and lower current can be used, and then as conditions change, the changes in condition can be accounted for by increasing voltage and current to maintain the desired response time of the solenoid valve. By measuring and controlling voltage and current less of a margin can be used, both in setting voltage/current levels and in selecting the time over which a pull voltage/current is utilized. This reduces the wasted energy in the system, as well as reducing the temperature rise in the solenoid valve.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: March 25, 2014
    Assignee: Raytheon Company
    Inventors: Steven D. Jacob, Fares Najjar, Gerald W. Meyer, Richard D. Ross
  • Patent number: 8619404
    Abstract: The present disclosure is directed to systems and methods for controlling energy consumption in a system having a battery and including a controller and one or more solenoids. In accordance with the disclosure, the controller provides a controlling mechanism, such as a control algorithm, that will provide the necessary power to operate the one or more solenoids throughout the range of battery voltage in a manner that optimizes the voltage discharge from the battery and simultaneously maximizes battery life. Further power conservation measures are implemented by using a controller and an associated control algorithm to operate a solenoid throughout the range of battery voltage in a manner that places the discharge of the battery in reduced power consumption operating modes as the capacity of the battery is reduced.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: December 31, 2013
    Assignee: Automatic Switch Company
    Inventor: John J. Haller
  • Patent number: 8605405
    Abstract: A method of increasing speed of an electro-mechanical relay provides an electro-mechanical relay having a coil and at least one contact. A first resistor and a second resistor are each in series with the coil, with the second resistor being in parallel with a first switch. A voltage is provided to the first switch, with the first switch being ON, thereby shorting out the second resistor and providing a first current through the first resistor and to the coil, to move the contact to a closed position. After a certain amount of time, the first switch is turned OFF so that a second current is provided through the first and second resistors and to the coil, maintaining the contact in the closed position.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: December 10, 2013
    Assignee: ABB Technology AG
    Inventor: Mark C. Giacobbe
  • Patent number: 8575789
    Abstract: An image forming apparatus includes: a carrier, a power unit, a switch, and a controller. The carrier is configured to carry a recording medium. The power unit is configured to provide drive power to the carrier. The switch is configured to switch an operation state of the carrier between an ON state and an OFF state of a transmission of the drive power from the power unit to the carrier. The controller is configured to provide a control power to control the switch such that the control power is reduced after switching from the OFF state to the ON state.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: November 5, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Isao Kubo
  • Patent number: 8555859
    Abstract: A circuit arrangement controls at least one injection valve, in particular a solenoid injection valve, for an internal combustion engine. The circuit includes a supply potential connection, a reference potential connection; one or more solenoids; a controllable voltage boosting circuit for generating from the first voltage a second voltage that is higher than the first voltage. The voltage boosting circuit is connected at a first input to the supply potential connection and at a first output to the solenoids by means of a respective first controllable semiconductor switching element. A control circuit is connected at least to a respective first semiconductor switching element and the voltage boosting circuit. The control circuit applies the first or the second voltage to the first coil connection of exactly one solenoid depending on an actuation state of one of the injection valves.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: October 15, 2013
    Assignee: Continental Automotive GmbH
    Inventor: Gerhard Wirrer
  • Patent number: 8542006
    Abstract: A solenoid current monitoring circuit of a solenoid actuator includes a solenoid drive board configured to receive a control signal, a sensing resistor configured to detect a current signal of a solenoid coil of the actuator resulting from the control signal, and a differentiator configured to differentiate the current signal. The solenoid current monitoring circuit detects the movement of the solenoid actuator based on a change in the differentiated current signal caused by a change in inductance of the solenoid coil.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: September 24, 2013
    Assignee: Hydril USA Manfacturing LLC
    Inventor: Zhen Liu
  • Patent number: 8424978
    Abstract: A method is for closing a solenoid valve in which the solenoid valve is charged with a first current value that results in a first closing of the solenoid valve, and the solenoid valve is subsequently charged with a second current value that results in a renewed partial opening of the solenoid valve, and the solenoid valve is subsequently charged with a third current value that results in a second closing of the solenoid valve, the third current value being selected such that the second closing takes place with a higher closing speed of the solenoid valve than does the first closing.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: April 23, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Klaus Landesfeind, Christian Laier, Carsten Bodmann, Ronny Goepfert, Manfred Maerz
  • Patent number: 8373960
    Abstract: Disclosed is driving circuit for AC contactor for driving a AC contactor, including a first switch connected in series with a winding of the AC contactor, a first diode reversely connected in parallel with the winding of the AC contactor for providing a discharging path for the winding, a DC startup holding unit having an output terminal connected in series with the first switch and a detection terminal connected to a first contact switch of the AC contactor. The DC startup holding unit is configured to selectively convert a DC driving voltage into a first DC voltage or a second DC voltage. When the AC contactor is not magnetized, the DC startup holding unit outputs the first DC voltage. When the AC contactor is magnetized, the DC startup holding unit outputs the second DC voltage.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: February 12, 2013
    Assignee: Delta Electronics, Inc.
    Inventors: Chunsheng Li, Zengliang Chang
  • Patent number: 8286613
    Abstract: A nozzle assembly includes a first needle and a second needle controlling respectively fuel flow towards a first series of outlets and a second series of outlets. It includes a passive control valve adapted to select, on the basis of the fuel feeding pressure, the needle to be activated for fuel delivery to the combustion chamber of an internal combustion engine. An injector with such an assembly is economic and efficient to spray fuel with two different patterns.
    Type: Grant
    Filed: July 4, 2006
    Date of Patent: October 16, 2012
    Assignee: Renault Trucks
    Inventors: Guillaume Millet, Nicolas Dronniou