Patents Examined by Bickey Dhakal
  • Patent number: 10971771
    Abstract: The present disclosure provides a battery heating system and a control method thereof. The battery heating system includes a main positive switch, a main negative switch, an inverter, a motor, and a battery management unit. The inverter includes a first phase bridge arm, a second phase bridge arm and a third phase bridge arm connected in parallel. A motor controller in the inverter is configured to output a drive signal to a target upper-bridge-arm switch unit and a target lower-bridge-arm switch unit, so as to control the target upper-bridge-arm switch unit and the target lower-bridge-arm switch unit to be periodically turned on and off. The battery management unit is configured to collect state parameters of the battery pack. When the state parameters of the battery pack meet preset heating conditions, a control signal is sent to the motor controller to control the motor controller to output the drive signal.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: April 6, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Zhimin Dan, Xiyang Zuo, Wei Zhang, Yizhen Hou, Guowei Li, Xingyuan Wu, Yanru Li
  • Patent number: 10967743
    Abstract: A powertrain for a vehicle includes an electric machine coupled with a first inverter, a traction battery and a second inverter. The traction battery is coupled between a neutral terminal of the electric machine and a negative terminal of the first inverter. The second inverter is coupled in parallel with the first inverter with respect to a direct current (DC) bus, and configured to drive a second electric machine.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: April 6, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Baoming Ge, Lihua Chen, Yan Zhou, Shuitao Yang, Fan Xu
  • Patent number: 10972021
    Abstract: Disclosed are a method and a system for processing fault information of a decoding chip in a rotary transformer. The method includes: reading data information transmitted by the decoding chip according to a preset period; determining whether the data information includes alarm information; when the data information includes the alarm information, estimating a rotor-position value after an alarm occurs in real time according to a rotational speed in the data information obtained before the alarm occurs; determining whether a difference between a current rotor-position value and the estimated rotor-position value is greater than a fault threshold; and when the difference between the current rotor-position value and the estimated rotor-position value is greater than the fault threshold, controlling a motor using the estimated rotor-position value.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: April 6, 2021
    Assignee: BEIJING ELECTRIC VEHICLE CO., LTD.
    Inventors: Yi Zheng, Yujun Li, Shengran Xiao, Ronghong Liu
  • Patent number: 10965238
    Abstract: A power conversion apparatus includes a power converter circuit that outputs an AC power to an electric motor, and circuitry that controls the power converter circuit to add a first change, accompanying a change of a power generated by the electric motor, to a first phase angle, which is a phase angle of a magnetic flux direction of the electric motor corresponding to the AC power, extracts a component generated by the first change from first information indicating the electric power supplied to the electric motor, and estimates the power generated by the electric motor based on the component.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 30, 2021
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Shingo Fukumaru, Hideaki Iura, Shinya Morimoto, Akira Yamazaki
  • Patent number: 10965225
    Abstract: This motor control devices provided with: a motor control unit which generates a command value on the basis of a motor drive command acquired from a PLC over a communication line; a drive unit which supplies motor drive voltage according to the command value; an interruption unit which interrupts transmission of the drive signal to the motor; a safety input unit which receives an emergency stop input operation over a control signal line; a reset input unit which receives a reset input operation; a determination unit which determines whether or not safety is maintained on the basis of input to the safety input unit; and a safety control unit which, when the safety input unit receives an emergency stop input operation, performs interruption processing of the drive signal through the interruption unit, and when the reset input unit receives a reset input operation, performs restart processing if safety is maintained.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: March 30, 2021
    Assignee: OMRON Corporation
    Inventors: Minoru Hashimoto, Tetsuya Akagi, Ryuichi Jimbo
  • Patent number: 10965146
    Abstract: The present patent application relates to a high-voltage motor vehicle electrical system comprising an electrical heating device and at least on further consumer during switching on of which, undesired electromagnetic oscillations may occur in the electrical system. According to the invention, these are suppressed by initially switching on the heating device, before the further consumer is switched on. Switching on the heating device changes the complete impedance of the electrical system such that a resonant enhancement of the interference oscillations is prevented. Preferably, the heating device is switched on only as shortly as possible (only during the switching on process of the further consumer) in order to minimize an undesired heating.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: March 30, 2021
    Inventors: Dimitar Tchobanov, Markus Billmann, Eugen Riefert, Christof Lausser, Ulrich Sutter
  • Patent number: 10958205
    Abstract: This motor control device is provided with a motor control unit which, on the basis of an operation command signal for driving the motor and a feedback signal from the encoder corresponding to motor operation, generates a command value relating to operation of the motor in accordance with a prescribed feedback method such that operation of the motor follows the operation command signal. The occurrence of an error is determined on the basis of the result of comparing a prescribed feedback value, which is calculated from the feedback signal from the encoder, and an operation command value, which is calculated from the operation command signal, and, on the basis of this determination result, interruption processing of the drive signal is performed. By means of this configuration, it is possible to improve safety performance of the motor control device without hampering the safety performance of the encoder.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 23, 2021
    Assignee: OMRON Corporation
    Inventors: Minoru Hashimoto, Tetsuya Akagi, Ryuichi Jimbo
  • Patent number: 10946748
    Abstract: An electric drive system includes a permanent magnet machine having a rotor and a stator and a power converter electrically coupled to the permanent magnet machine and configured to convert a DC link voltage to an AC output voltage to drive the permanent magnet machine. The power converter includes a plurality of silicon carbide switching devices having a voltage rating that exceeds a peak line-to-line back electromotive force of the permanent magnet machine at a maximum speed of the permanent magnet machine.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: March 16, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Ayman Mohamed Fawzi EL-Refaie, Robert Dean King
  • Patent number: 10951154
    Abstract: A motor driving circuit including a first and a second driving signal output circuit is configured to selectively output a six-step square wave driving signal from the first driving signal output circuit, or a space-vector driving signal from the second driving signal output circuit to an inverter to drive a motor according to whether an operating power exceeds a power threshold. The first driving signal output circuit is configured to generate the six-step square wave driving signal. The second driving signal output circuit is configured to generate the space-vector driving signal.
    Type: Grant
    Filed: May 12, 2019
    Date of Patent: March 16, 2021
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chih-Hung Hsiao, Chia-Pin Wei, Yu-Wei Lee, Wei-Shuo Tseng
  • Patent number: 10948893
    Abstract: This motor control device is provided with a motor control unit which, on the basis of an operation command signal for driving the motor and a feedback signal from the encoder corresponding to motor operation, generates a command value relating to operation of the motor in accordance with a prescribed feedback method such that operation of the motor follows the operation command signal. Interruption processing of the drive signal is performed on the basis of the comparison result of a prescribed feedback value, which is calculated from the feedback signal from the encoder, and a control calculation value, which, comparable with a prescribed feedback value, is calculated during the process of generation of the command value by the motor control unit. By means of this configuration, it is possible to improve safety performance of the motor control device without hampering the safety performance of the encoder.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 16, 2021
    Assignee: OMRON Corporation
    Inventors: Minoru Hashimoto, Tetsuya Akagi, Ryuichi Jimbo
  • Patent number: 10944313
    Abstract: A self-adaptive control miniature motor comprises a driving unit (200), a mover (300) and a self-adaptive control unit (100). The driving unit comprises a fixed stator and a movable vibration block, and provides the driving force for the reciprocating motion of the mover through the interaction between the stator and the vibration block. The mover is a forced vibration part, and is driven by the movable vibration block of the driving unit to do the reciprocating motion. The self-adaptive control unit is used for controlling a motion state of the mover in real time by adjusting a force applied on the mover, based on a feedback information of the motion state of the mover. The self-adaptive control miniature motor, by combining the motor hardware with a control circuit, facilitates real-time adjustment of the magnetic field intensity in the motor, thus improving the stability of the vibration of the motor.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: March 9, 2021
    Assignee: GOERTEK INC.
    Inventors: Fenglei Zu, Chunfa Liu
  • Patent number: 10944341
    Abstract: The half-bridges driving a multiphase motor are controlled to perform a sequence of operations to support charging a hold capacitor. First, in a brake configuration, the half-bridge transistors are controlled such that either high-side transistors or low-side transistors of the half-bridges are turned on. Second, in an active step-up configuration, the half-bridge transistors are controlled such that the high-side transistor of a first half-bridge and the low-side transistor of a second half-bridge are both turned on and the low-side transistor of the first half-bridge and the high-side transistor of the second half-bridge are both turned off. Third, in an active brake configuration, the half-bridge transistors are controlled such that the low-side transistor of the first half-bridge and the high-side transistor of the second half-bridge are both turned on and the high-side transistor of the first half-bridge and the low-side transistor of the second half-bridge stage are both turned off.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: March 9, 2021
    Assignee: STMicroelectronics Asia Pacific Pte Ltd
    Inventor: Kaufik Linggajaya
  • Patent number: 10920927
    Abstract: A gimbal device according to various embodiments of the present disclosure may include: a handle; a gimbal; a joint pivotably coupling one end of the gimbal to the handle; and at least one processor, wherein the gimbal includes: a holder configured to hold an electronic device including a camera; an angular velocity sensor disposed in the holder and configured to detect a movement of the holder; and a plurality of motors coupled to the holder and configured to pivot the holder in pitch, roll, and yaw directions according to the detected movement. The at least one processor is configured to identify a pivoting state of the joint, and to change axis information assigned to each of detection values of three axes obtained by using the angular velocity sensor, based on the identified pivoting state. Other embodiments are possible.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: February 16, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaekyu Shim, Baeseok Lim
  • Patent number: 10921800
    Abstract: A motor control device comprising a motor control unit that, on the basis of an operation command signal for driving a motor and a feedback signal, from an encoder, corresponding to the operation of the motor, generates a command value pertaining to the operation of the motor in accordance with a prescribed feedback scheme so that the operation of the motor follows the operation command signal, wherein interrupt processing of a drive signal is executed by an interrupt unit on the basis of a comparison result of two items pertaining to a prescribed feedback value calculated using the feedback signal from the encoder, and to a state calculation value that is calculated on the basis of the operation command signal and that pertains to an operating state of the motor comparable with the prescribed feedback value.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: February 16, 2021
    Assignee: OMRON Corporation
    Inventors: Tetsuya Akagi, Minoru Hashimoto, Ryuichi Jimbo
  • Patent number: 10913550
    Abstract: Feedback control circuitry includes rate limiter circuitry configured to generate a rate limited position command based on a position command for a controlled component and based on a speed command for the controlled component. The feedback control circuitry also includes error adjustment circuitry configured to apply a control gain to an error signal to generate an adjusted error signal. The error signal is based on position feedback and the rate limited position command, and the position feedback indicates a position of the controlled component. The feedback control circuitry further includes an output terminal configured to output a current command generated based on the adjusted error signal.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: February 9, 2021
    Assignee: THE BOEING COMPANY
    Inventors: Douglas C. Cameron, Dwayne C. Merna
  • Patent number: 10912544
    Abstract: A method of engaging a medical instrument with a medical instrument manipulator comprises receiving an indication that a first input coupling of the medical instrument is positioned adjacent to a first drive output of the manipulator. The first drive output is driven by a first actuating element. In response to receiving the indication, the first drive output is rotated in a first rotational direction. A determination is made, by one or more processors, as to whether a resistance torque is experienced by the first actuating element after rotating the first drive output in the first rotational direction. If the resistance torque is not experienced by the first actuating element after rotating of the first drive output in the first rotational direction, the first drive output is rotated in a second rotational direction.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: February 9, 2021
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC
    Inventors: Gabriel F. Brisson, Gregory W. Dachs, II, Niels Smaby, Melody Wu
  • Patent number: 10913489
    Abstract: An electric power assisted steering apparatus comprises an upper column shaft that is connected to a steering wheel of the vehicle; and a lower column shaft. A torsion bar interconnects the upper column shaft and the lower column shaft; and an electric motor is connected to the lower column shaft of the torque sensor assembly. A first sensor circuit generates a first torque signal based on angular deflection of the torsion bar, and a second sensor circuit generating a second torque signal based on angular deflection of the torsion bar, the apparatus further including: an error determining circuit which produces two error signals, each indicative of the validity of a respective torque signal, and a torque plausibility estimator which generates two plausibility signals each indicative of the plausibility of a respective one of the two torque signals.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: February 9, 2021
    Inventor: James Owen Patrick Farrelly
  • Patent number: 10910979
    Abstract: According to an aspect of the present disclosure, a motor drive control device driving a motor using position information detected by one sensor includes: a current detection unit detecting a magnitude of a coil current flowing through a coil of the motor; a rotation position detection unit detecting a rotation position of the motor based on the position information; and a hunting determination unit determining, based on the magnitude of the coil current, the rotation position of the motor, and a driving command for driving the motor, whether or not the motor is in a hunting condition.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: February 2, 2021
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Hiroyuki Kaidu, Masato Aoki, Youhei Serizawa
  • Patent number: 10908590
    Abstract: A motor controller coupled to a motor is provided. The motor controller includes a processor, a memory coupled to the processor, a first input coupled to the processor, wherein the first input is associated with a first mode of operation, and a second input coupled to the processor, wherein the second input is associated with a calibration mode. The motor controller is configured to receive, through the first input, a first activation signal, operate the motor in the first mode of operation in response to receiving the first activation signal, while operating the motor in the first mode of operation, receive, through the second input, a second activation signal, in response to receiving the first activation signal and the second activation signal, adjust a value of a parameter associated with the first mode of operation, and store the value of the parameter in the memory.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: February 2, 2021
    Assignee: REGAL BELOIT AMERICA, INC.
    Inventors: Roger Carlos Becerra, Brian Lee Beifus, Ludovic Andre Chretien, Yao Da, Glen Chester Young
  • Patent number: 10903774
    Abstract: A communication system for use in a switching module includes a low-side control block coupled to control switching of a low-side switch of the switching module. The low-side control block is further coupled to be referenced with a low-side reference system ground. A high-side control block is coupled to control switching of a high-side switch of the switching module. The high-side control block is further coupled to be referenced with a floating node of the switching module. During steady state operation, the low-side control block is coupled to send signals during each switching cycle to the high-side control block to turn the high-side switch on and off. A status update is communicated from the high-side control block to the low-side control block through a first single-wire communication link.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: January 26, 2021
    Assignee: Power Integrations, Inc.
    Inventors: Stefan Bäurle, Michael Yue Zhang, Yury Gaknoki