Limitation Of Motor Load, Current, Torque Or Force (e.g., Preventing Overload) Patents (Class 318/434)
  • Patent number: 12034293
    Abstract: A smart window and a controller thereof, a power detection method and a non-transitory computer-readable storage medium are provided. The controller includes: a microcontroller; an output circuit coupled to the microcontroller and configured to output a driving signal under a control of the microcontroller; a first power supply coupled to a load through the output circuit and configured to supply an operating power supply to the load; a sampling resistor between the output circuit and the first power supply, a first terminal of the sampling resistor being coupled to the first power supply, and the second terminal of the sampling resistor being coupled to the output circuit; and a power acquiring circuit coupled to the microcontroller and coupled to the first terminal and the second terminal of the sampling resistor, respectively.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: July 9, 2024
    Assignees: Beijing BOE Sensor Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yongbo Wang, Chen Meng, Dahai Hu, Siheng Xu, Wenjie Zhong, Binbin Liu
  • Patent number: 12031369
    Abstract: An open roof assembly for use in a vehicle roof of a vehicle comprises a movably arranged closure member for closing an opening in the vehicle roof and a pinch detection module for detecting a pinch of an object between the closure member and an edge of the opening. The pinch detection module is operatively coupled to receive an input signal and is configured to detect the pinch based on said input signal and a threshold. The pinch detection module is configured to dynamically determine the threshold based on the input signal.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: July 9, 2024
    Assignee: INALFA ROOF SYSTEMS GROUP B.V.
    Inventors: Dennie Wilhelmus Hendrikus Craane, Marco van Mourik
  • Patent number: 12030170
    Abstract: The disclosure discloses an electric power tool. The electric power tool may include a motor, a power transmission mechanism connected to the motor, a housing that houses the motor and the power transmission mechanism, an end tool holder to which an end tool is configured to be attached and from which the end tool is configured to be detached, and connected to the power transmission mechanism, and a handle attached to the housing. The electric power tool may be configured to prohibit rotation of the motor when a user is not gripping the handle.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: July 9, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Hiroki Kaneko, Akira Mizutani, Ryosuke Otani, Shunpei Yamaji, Junya Ishikawa, Fumiyoshi Saito
  • Patent number: 12024173
    Abstract: A self-propelled work vehicle is provided with work state estimation and associated control techniques. The work vehicle comprises ground engaging units, a work implement configured for controllably working terrain, and various onboard sensors. A controller is functionally linked to at least the one or more onboard sensors and configured to ascertain a first parameter or operation of the work vehicle, determine a work state of the work vehicle, based at least in part on respective input signals from one or more onboard sensors, and generate a control signal for controlling at least a second parameter or operation of the work vehicle, responsive to the ascertained first parameter or operation and the determined work state. The control signals may be provided for proactive adjustments to engine speed, movements of the work implement, movements of the work vehicle itself, etc.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: July 2, 2024
    Assignee: Deere & Company
    Inventors: Dipankar D. Dongare, Dnyaneshwar Jagtap, Rushikesh Jadhav, Lance R. Sherlock, Mahesh Sorate, Sanket Pawar, Vaibhav Bhutad
  • Patent number: 12015365
    Abstract: An electric motor assembly comprising a housing containing a secondary power source, a motor driver, an electric motor, power sensors to sense faults in a primary power supply and the secondary power source, primary and secondary winding sensors configured to sense faults in a primary winding and a secondary winding of the electric motor, the motor driver comprising a primary controller to control the primary winding in a normal operation mode and a secondary motor controller operatively configured to control at least one of the primary winding and/or the secondary winding in a secondary operation mode, the secondary motor controller configured to drive the motor to a safe position using the secondary winding in the event of a sensed fault in the primary winding and to drive the motor to the safe position using the secondary power source in the event of a sensed fault in the primary power source.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: June 18, 2024
    Assignee: Moog Inc.
    Inventors: Ray Opie, Denis O'Sullivan, Michael J. Willers
  • Patent number: 11999315
    Abstract: A seatbelt system for a vehicle comprises a webbing (28), a belt retractor, a belt reel (16) and a belt reel angle sensor (22) having a first gearwheel assembly (32) and a second gearwheel assembly (36). The belt reel angle sensor (22) includes a multi-stage gearing (58) having a first gear stage with a first reduction ratio and a second gear stage with a second reduction ratio. The belt reel angle sensor (22) further comprises a rotation angle sensor (64) and a rotation angle transmitter (34) associated with the rotation angle sensor (64) as well as a reference signal sensor (68) and a reference signal transmitter (38) associated with the reference signal sensor (68). The rotation angle transmitter (34) is associated with the first gearwheel assembly (32) and the reference signal transmitter (38) is associated with the second gearwheel assembly (36).
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: June 4, 2024
    Assignee: ZF AUTOMOTIVE GERMANY GMBH
    Inventors: Wolfgang Holbein, David Reich
  • Patent number: 11999205
    Abstract: A tyre changing apparatus (1) for demounting and mounting a tyre relative to a respective rim of a vehicle wheel (2) includes: a frame (10); a chuck (11) rotating about an axis of rotation (A); a working tool (12), connected to the frame (10) and movable towards and away from the chuck; an electric motor (13), imparting to the chuck (11) a rotation speed and a working torque; a controller (14), including a power unit (141) supplying voltage and current as a function of a drive signal (101); a processing unit (142) generating the drive signal (101) and programmed to derive a control parameter (102) representing the working torque delivered to the electric motor (13) and to apply a torque-limiting function responsive to the control parameter (102). The processing unit (142) derives an activation parameter and, as a function of the activation parameter, enables and disables the torque-limiting function.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: June 4, 2024
    Assignee: NEXION S.P.A.
    Inventor: Giulio Corghi
  • Patent number: 11989006
    Abstract: A processing system comprises a tool that processes a workpiece composed of a metal member, a motor that rotates the workpiece or the tool, a control unit that controls the motor, and a measurement unit that obtains an electrical quantity of the motor, wherein the control unit changes a rotational speed of the motor based on a difference between a first electrical quantity and a second electrical quantity, the first electrical quantity is an electrical quantity obtained by the measurement unit while the motor rotates before the workpiece is processed, and the second electrical quantity is an electrical quantity obtained by the measurement unit while the workpiece is processed.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: May 21, 2024
    Assignee: SUMITOMO ELECTRIC SINTERED ALLOY, LTD.
    Inventor: Kazuo Maeda
  • Patent number: 11984822
    Abstract: A power conversion apparatus accurately estimates a main current of a power device using observation of a sense current. The power conversion apparatus includes: an inverter circuit including a device having a main element and a sense element; a temporary-main-current estimator estimates a current flowing through the main element, from a sense current flowing through the sense element, as a temporary main current; a temperature-difference estimator configured to estimate a temperature difference between the main element and the sense element based on a gate drive signal for the main element and the temporary main current; a main-current corrector corrects the temporary main current using the estimated temperature difference and a temperature characteristic of on-resistance of the main element and output the corrected temporary main current as a corrected main current; and an inverter control circuit configured to output the gate drive signal based on the corrected main current.
    Type: Grant
    Filed: November 27, 2020
    Date of Patent: May 14, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Tomohiko Yano, Shinichirou Wada
  • Patent number: 11981216
    Abstract: A power system includes a battery and a controller. The controller inhibits charge of the battery according to voltage or current values sensed before and after contactors electrically connected to the battery are commanded to open and indicating that a leakage resistance associated with one of the contactors increases after the one of contactors is commanded to open, and a duration of a continuous voltage drop across another of the contactors after the another of the contactors is commanded to open exceeds a threshold.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: May 14, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Baojin Wang, Chingchi Chen, Benjamin A. Tabatowski-Bush, Aaron Walker, Rui Wang, Xianzhi Gong, Xu Wang, John Paul Gibeau
  • Patent number: 11967909
    Abstract: In a first section of a power conversion device, a second switch is turned off, a first duty drec and a third duty dz are selected so that a direct current voltage Vdc to be input to a current source becomes equal to a direct current voltage command value Vdc*, a first conversion operation of supplying power from the voltage source to the current source is performed, and the capacitor is charged by the rectified voltage via the clamp diode. In a second section of the power conversion device, a first switch is turned off, a second duty dc and the third duty dz are selected so that the direct current voltage Vdc to be input to the current source becomes equal to the direct current voltage command value Vdc*, and a second conversion operation of supplying power from the capacitor to the current source is performed.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: April 23, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Kenichi Sakakibara, Tomoisa Taniguchi
  • Patent number: 11958363
    Abstract: A vehicle includes first and second electric machines constrained to rotate in unison and configured to power a common axle. A controller is programmed to, in response to activation of the vehicle, select one of the first and second speed sensors as a representative speed sensor, and, in response to the electric machines being in speed control, command speeds to the first and second electric machines based on a difference between a target speed of the electric machines and a measured speed of the representative speed sensor.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: April 16, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Dev Saberwal, Christopher Golecki
  • Patent number: 11955913
    Abstract: In one aspect, a movable barrier operator system is provided that includes a motor configured to be coupled to a movable barrier. The motor has a power rating indicative of a minimum power to be supplied to the motor in order for the motor to move the movable barrier. The system further includes an external power supply configured to connect to an electrical outlet. The external power supply has a plurality of outputs each having a power rating indicative of a maximum power the output supplies, the output power rating being less than the motor power rating. The movable barrier operator system includes combiner circuitry configured to combine power from the outputs of the external power supply and provide the combined power to the motor. The system further includes a monitoring circuit configured to detect a fault condition of any of the outputs of the external power supply.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: April 9, 2024
    Assignee: The Chamberlain Group, LLC
    Inventors: Anthony David Bertini, Edwin Fernelly Moreno Hortz, James Scott Murray
  • Patent number: 11951877
    Abstract: The present disclosure relates to an anti-pinch control system. The anti-pinch control system includes a motor configured to generate driving force for moving a seat of a vehicle, a current measurement sensor configured to measure a value of the current generated by the motor, a database unit configured to store the values of current measured by the current measurement sensor, and a controller configured to vary an anti-pinch value of the seat based on an average of a plurality of values of current measured every preset measurement period for a predetermined time, stored in the database unit, wherein the plurality of values of current is values of current measured before the predetermined time based on a current time.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: April 9, 2024
    Assignee: HYUNDAI TRANSYS INC.
    Inventors: Sang Kyung Koh, Jae Kwon Son, Won Ho Jung
  • Patent number: 11951938
    Abstract: A steering wheel locking control apparatus may include: a power supply switch configured to receive power from a battery when an ignition switch of a vehicle is turned off; and a switch unit connected to a motor, turned on when power is received through the power supply switch, and configured to lock a steering wheel through a closed circuit formed by shorting phases of the motor.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: April 9, 2024
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Jung Suk Ko, Sung Ho Jang, Seung Young Park, Hyeon Hee Jeong
  • Patent number: 11949297
    Abstract: A measurement circuit that is configured to provide a torque reading to a motion controller includes an offset controller and an amplifier. The offset controller is configured to read a temperature signal and to generate an offset voltage in response to receiving the temperature signal. The amplifier is configured to read a differential voltage from a differential sensor and to receive the offset voltage from the offset controller. The amplifier is also configured to add the offset voltage to the differential voltage after applying a gain to the differential voltage to generate an adjusted voltage. The amplifier is then configured to transmit the adjusted voltage.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: April 2, 2024
    Assignee: COVIDIEN LP
    Inventors: Richard S. Lech, Alok Agrawal
  • Patent number: 11948635
    Abstract: A memory device includes a memory array including a plurality of memory cells arranged in rows and columns. A closed loop bias generator is configured to output a column select signal to the memory array. A current limiter receives an output of the closed loop bias generator. The current limiter is coupled to a plurality of the columns of the memory array.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: April 2, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chung-Cheng Chou, Tien-Yen Wang
  • Patent number: 11948604
    Abstract: According to an embodiment, a magnetic disk device includes a magnetic disk, a magnetic head that accesses the magnetic disk, a motor that moves the magnetic head, a ramp, a motor driver, and a processor. When a voltage value of a power supply voltage falls below a first threshold, the motor driver starts a retract operation of retracting the magnetic head to the ramp by controlling a voltage applied to the motor. When the voltage value of the power supply voltage falls below a second threshold larger than the first threshold, the processor transmits an instruction related to applying a brake to the movement of the magnetic head to the motor driver.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: April 2, 2024
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Hideki Hironaka, Kenji Itou
  • Patent number: 11937889
    Abstract: A robotic system and methods for performing spine surgery are disclosed. The system comprises a robotic manipulator with a tool to hold a screw and to rotate the screw about a rotational axis. The screw is self-tapping and has a known thread geometry that is stored by one or more controllers. A navigation system tracks a position of a target anatomy. Movement of the robotic manipulator is controlled to maintain the rotational axis of the surgical tool along a planned trajectory with respect to the target anatomy based on the tracked position of the target anatomy. In autonomous or manual modes of operation, the rotational rate of the screw about the rotational axis and/or an advancement rate of the screw linearly along the planned trajectory is controlled to be proportional to the known thread geometry stored in the memory.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: March 26, 2024
    Assignee: MAKO Surgical Corp.
    Inventors: Hyosig Kang, Jienan Ding, David Gene Bowling, Christopher Wayne Jones, Greg McEwan, Lucas Gsellman
  • Patent number: 11942778
    Abstract: A device for supplying power to an inductive load, including an H-bridge switching structure, the switching structure being designed to drive a current in the inductive load through a first control output and a second control output, an anomaly detector designed to generate an item of anomaly detection information about the detection of an anomaly at the switching structure, the anomaly detector including a first voltage generator, a second voltage generator, a first current measuring device, a second current measuring device designed to measure a current at the output of the second voltage generator, a third current measuring device, a fourth current measuring device, a fifth current measuring device and a sixth current measuring device, the current measuring devices being designed to respectively measure the currents of the switches.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: March 26, 2024
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Thierry Bavois, Florence Capy
  • Patent number: 11939816
    Abstract: A motorized window shade system may comprise a shade tube in a pocket; a window shade attached to the shade tube; a motor configured to rotate the shade tube; an internal temperature sensor configured to measure a first temperature of the motor; an external temperature sensor configured to measure a second temperature of the pocket; and a controller configured to adjust a mode of the system from an override mode to an automated mode.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: March 26, 2024
    Assignee: MECHOSHADE SYSTEMS, LLC
    Inventors: Stephen P. Hebeisen, Xi Ming Liarno, Eugene Miroshnichenko
  • Patent number: 11932116
    Abstract: A control system configured to control a rotating electrical machine of a battery electric vehicle (BEV), having one or more microprocessors that execute a low-efficiency mode of operation for the BEV, such that the low-efficiency mode of operation includes determining a high-efficiency mode current command corresponding to operation at a determined physical rotor angular velocity of a rotor of the rotating electrical machine at a commanded torque value, and increasing current supplied to the rotating electrical machine to a level corresponding to operation at an angular velocity higher than the determined physical angular velocity of the rotor at the commanded torque value.
    Type: Grant
    Filed: September 14, 2022
    Date of Patent: March 19, 2024
    Assignee: BORGWARNER INC.
    Inventors: Caleb Wayne Secrest, Siddharth Ballal, Vignesh Namasivayam
  • Patent number: 11919293
    Abstract: A recording device includes: a recording unit configured to perform recording by liquid to a recording medium; a support unit configured to support the recording medium subjected to printing and transported in a transport direction; a drying mechanism including a heated air blower including a heat source and a blowing unit; a number of rotations detecting unit configured to detect a number of rotations of the blowing unit; and a control unit configured to control the drying mechanism. The support unit and the heated air blower are disposed sandwiching a transport path of the recording medium at a position downstream of the recording unit in the transport direction. The control unit controls the number of rotations of the blowing unit based on an output of the number of rotations detecting unit in a state in which a constant power is applied to the heat source.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: March 5, 2024
    Assignee: Seiko Epson Corporation
    Inventor: Tomohiro Yoda
  • Patent number: 11919135
    Abstract: Power tools described herein include a tool output, a motor driving the tool output, a battery pack interface, a power switching network coupled between the battery pack interface and the motor, and a controller coupled to the power switching network to control operation of the motor. The controller is configured to operate the motor at a no-load speed at startup and detect a load state of the power tool. The load state indicates whether the power tool is in a loaded state or an unloaded state. The controller is also configured to incrementally ramp up a speed of the motor from the no-load speed to a selected speed when the power tool is in the loaded state and incrementally ramp down the speed of the motor from the selected speed to the no-load speed when the power tool is in the unloaded state.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: March 5, 2024
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Michael J. Panetta, Carter H. Ypma, Arik A. Miller, Mitchell A. Ellena
  • Patent number: 11919503
    Abstract: Methods and systems are provided for operating a vehicle that includes an electric machine as a propulsion source. In one example, a motor stall assessment level is generated based on an amount of time that the motor is stalled and an amount of torque that is generated by the motor. Mitigating actions may be performed if the motor stall assessment level exceeds a threshold level or value.
    Type: Grant
    Filed: March 14, 2022
    Date of Patent: March 5, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Justin Campanaro, Carol Louise Okubo, Jonathan Butcher, Zachary March, Joshua Wilson
  • Patent number: 11904440
    Abstract: An electric power tool includes a body, a driver, a manipulation section, a load sensor, and a controller. To the body, a tool is attachable. The driver is configured to drive the tool to rotate, the tool being attached to the body. The manipulation section is configured to receive an operation for causing operation of the driver. The load sensor is configured to measure a load caused when the driver operates. The controller is configured to: set an upper limit value of a rotation speed of the driver in accordance with the load measured by the load sensor; and control driving of the driver to rotate based on the upper limit value.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: February 20, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Hiroshi Miyazaki
  • Patent number: 11894792
    Abstract: A motor control device includes an energization control unit and an excessive return determination unit. The energization control unit controls energization to a motor. The excessive return determination unit determines whether or not there is a possibility of an excessive return exceeding an allowable return position, when a non-energization return control is performed to return a motor in a direction away from a movable limit position by an external force generated in the rotation transmission system by turning off the energization to the motor after driving the motor to the movable limit position where the drive is restricted by the drive limiting portion. When it is determined that there is no possibility of the excessive return, the energization is continuously turned off, and when it is determined that there is a possibility of the excessive return, a stop control configured to stop the motor by energizing is performed.
    Type: Grant
    Filed: February 10, 2022
    Date of Patent: February 6, 2024
    Assignee: DENSO CORPORATION
    Inventor: Jun Yamada
  • Patent number: 11892218
    Abstract: An air-conditioning apparatus includes: a heat-source-side device that heats or cools a heat medium; a pump that sucks and transfers the heat medium; use-side heat exchangers; a heat medium circuit; flow rate control devices; indoor-side pressure sensors; a pump inlet-side pressure sensor and/or a pump outlet-side pressure sensor; a flow rate detection device that detects a pump flow rate; and a controller that performs a first operation in which the flow rate control devices are individually opened or closed and data regarding a flow passage resistance at a path related to each of the heat exchangers is obtained, and a second operation in which heat is supplied to indoor air, and calculates calculate flow rates of the heat medium that flows through the heat exchangers in the second operation, from pump flow rates and pressures detected by the pressure sensors in the first and second operations.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: February 6, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Jun Nishio, Soshi Ikeda, Naofumi Takenaka, Yuji Motomura, Katsuhiro Ishimura
  • Patent number: 11894723
    Abstract: An electric tool includes an AC motor (an electric motor) and a control unit. The AC motor includes a permanent magnet and a coil. The control unit is configured to perform control on operation of the AC motor. The control performed by the control unit includes field weakening control. In the field weakening control, the control unit causes a flux-weakening current to flow through the coil. The flux-weakening current is a current that generates, in the coil, a magnetic flux that weakens a magnetic flux of the permanent magnet.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: February 6, 2024
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Fumiiki Yoneda, Kenji Hanamura, Masayuki Nakahara
  • Patent number: 11881753
    Abstract: The invention refers to a housing assembly for an electric drive or an electric drive unit, in particular of a motor vehicle, comprising a housing, a cooling fluid and an inverter, the housing forming a cooling circuit for receiving the cooling fluid with at least one first recess and the inverter having at least one capacitor assembly which is provided for arrangement in the first recess of the housing. The capacitor assembly is formed with at least one capacitor, in particular a wound capacitor, a shell for receiving the capacitor and a thermal conduction element, in particular a thermally conductive resin, for embedding the capacitor in the shell. The capacitor assembly can be coupled directly to the shell. Furthermore, the invention refers to a motor and a vehicle.
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: January 23, 2024
    Assignee: JHEECO E-DRIVE AG
    Inventor: Katja Stengert
  • Patent number: 11870245
    Abstract: A surge suppression device includes a plurality of series circuits each of which is composed of a resistor and a capacitor, a case in which a plurality of the resistors and a plurality of the capacitors are placed, wherein respective ends of the plurality of series circuits on the capacitor side are electrically connected to each other via a connection electrode provided on the case. A motor wiring component includes a plurality of conductive wires connected to stator coils of the motor, wiring terminals that are provided at ends of the plurality of conductive wires on a side opposite to the side connected to the stator coils and are connected to electrodes of a terminal block, and the surge suppression device.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: January 9, 2024
    Assignee: PROTERIAL, LTD.
    Inventor: Keisuke Fukuchi
  • Patent number: 11870237
    Abstract: A surge suppression circuit is used in a rotating electrical machine system including a switching circuit composed of a plurality of switching elements and a rotating electrical machine connected thereto via an electrically conducting path comprising a plurality of electrically conductive bodies. The surge suppression circuit suppresses surge voltage generated in a plurality of connecting lines connecting the plurality of electrically conductive bodies to windings of plural phases of the rotating electrical machine. The surge suppression circuit includes a plurality of upper diodes with anodes respectively connected to the plurality of connection lines, a plurality of lower diodes with cathodes respectively connected to the plurality of connection lines, an upper line connected to respective cathodes of the plurality of upper diodes, a lower line connected to respective anodes of the plurality of lower diodes, and a voltage holding circuit connected between the upper line and the lower line.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: January 9, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Yuta Sugiyama, Haruyasu Komano
  • Patent number: 11863096
    Abstract: A boost circuit is arranged to reduce rise and fall times of pulsed power used for pulsed control operation of electric machines. Magnetic energy present in the electric machine at the end of a pulse is extracted by the boost circuit to reduce the pulse fall time. The energy is stored by the boost circuit and then applied at the beginning of a subsequent pulse to reduce the rise time. By reducing rise and fall times compared to not using such a boost circuit, machine efficiency is improved.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: January 2, 2024
    Assignee: Tula eTechnology, Inc.
    Inventors: Babak Mazda, Adya S. Tripathi, Paul Carvell
  • Patent number: 11863094
    Abstract: Disclosed is a motor control apparatus and a motor control method to estimate a stator resistance of a motor for sensorless control of the motor.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: January 2, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Ha Min Song, Ki Wook Lee, Kwang Sik Kim
  • Patent number: 11863092
    Abstract: A control device includes: an angular velocity detection unit that detects an angular velocity of a motor; a vibration component removal unit that removes a vibration component in a predetermined band from the angular velocity detected by the angular velocity detection unit by filtering; and a current command calculation unit that calculates a current command value of a drive current for driving the motor according to a torque command value and the angular velocity from which the vibration component has been removed by the vibration component removal unit.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: January 2, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Tomonari Mori, Linfeng Lan, Ryo Itaba, Yasuki Kobayashi
  • Patent number: 11855569
    Abstract: A motor control unit for a vehicle comprising an electric drive motor, the motor control unit comprising a first processor, a second processor and a third processor, in which: the third processor is configured to: receive an actuation demand for the vehicle; calculate a torque for the motor in dependence on the actuation demand; and provide the calculated torque to the first processor; the first processor is configured to: receive the calculated torque and a control input of the vehicle; and determine a first control output for the electric drive motor in dependence on the calculated torque and the control input; and the second processor is configured to: receive the first control output from the first processor and the control input of the vehicle; calculate a second control output for the motor in dependence on the control input; and validate the first control output by comparison to the second control output.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: December 26, 2023
    Assignee: McLaren Automotive Limited
    Inventors: Sunoj Cherian George, Tao Chang
  • Patent number: 11824473
    Abstract: An electric working machine in one aspect of the present disclosure includes a driving device, a controller, a control power source, and an operation state determiner. The control power source includes a first converter and a second converter. The control power source transitions to a first conversion state when the operation state determiner determines that the controller is in a control operation state. The control power source in the first conversion state supplies a first control current to the controller. The control power source transitions to a second conversion state when the operation state determiner determines that the controller is in a low power operation state. The control power source in the second conversion state (i) stops operation of the first converter, and (ii) supplies a second control current to the controller.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: November 21, 2023
    Assignee: MAKITA CORPORATION
    Inventors: Hitoshi Suzuki, Akihiro Nakamoto
  • Patent number: 11817810
    Abstract: According to one embodiment, a motor driving device includes an output part that supplies an exciting current to an exciting coil, a position detection part that detects a rotational position of a rotor, and a driving control part that produces a driving signal that is based on a detection signal from the position detection part and supplies it to the output part. The position detection part has first, second, and third detection elements that are integrally integrated together with the driving control part and detect rotational positions of the rotor.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: November 14, 2023
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventor: Shen Wang
  • Patent number: 11811338
    Abstract: One or more multiphase power converters are connected to a positive electrode and a negative electrode of a power supply via a high potential line and a low potential line, respectively, convert DC power of the power supply into multiphase alternate current power by operations of a plurality of inverter switching elements, and apply a voltage to each of phase windings of a multiphase winding set. A DC rotating machine switch including switches on a high potential side and a low potential side connected in series via a DC motor terminal connected to a second terminal that is an end of the DC rotating machine on an opposite side to a first terminal. The DC rotating machine switch generates a voltage of the DC motor terminal variable by switching. A control unit controls operations of the inverter switching elements and the DC rotating machine switch.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: November 7, 2023
    Assignee: DENSO CORPORATION
    Inventor: Takashi Suzuki
  • Patent number: 11807111
    Abstract: An example vehicle comprises: (i) a source of direct current power, (ii) at least one electronically-commutated electric motor configured to drive a wheel of the vehicle, and (iii) a voltage bus connecting the source of direct current power with the electronically-commutated electric motor.
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: November 7, 2023
    Assignee: Parker-Hannifin Corporation
    Inventors: Randall D. Thompson, Steven R. Huard
  • Patent number: 11808475
    Abstract: The invention discloses an air conditioner and an electric heating control method and a control device thereof. An electric heating module and an indoor fan are arranged in an indoor unit of the air conditioner, the electric heating module comprises an electric heating unit and an electric heating control circuit, and an auxiliary fan is further arranged in the indoor unit; the electric heating control method comprises the following steps that when an electric heating starting condition is met, and the electric heating unit and the auxiliary fan are operated; after the auxiliary fan operates, heat generated by the electric heating unit is blown out from an air outlet of the indoor unit. According to the electric heating control method, the normal start of electric heating can be ensured to the maximum degree, and the requirement for auxiliary heating by electric heating is met.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: November 7, 2023
    Assignees: QINGDAO HAIER AIR CONDITIONER GENERAL CORP., LTD., HAIER SMART HOME CO., LTD.
    Inventors: Fengchun Wang, Limin Sun, Sue Liu
  • Patent number: 11787384
    Abstract: An electric drive system, method and apparatus includes a rechargeable energy storage unit, a power inverter, and a rotary electric machine. Transfer of electrical power between the rechargeable energy storage unit and the rotary electric machine is governed by a pulse width modulation (PWM) switching frequency, which is one of a non-six-step switching mode or a six-step switching mode. Executable instructions determine a rotational speed, a torque command, a torque direction, a bus voltage, and a hysteresis band, determine a modulation index command in response to the rotational speed, the torque command, the torque direction, and the bus voltage, and command operation of the rotary electric machine in one of the non-six-step switching mode or the six-step switching mode employing the modulation index command.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: October 17, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Brent S. Gagas, Kerrie M. Spaven, Brian A. Welchko
  • Patent number: 11791750
    Abstract: A power tool includes a housing, a brushless motor disposed inside the housing, and a controller. The controller is configured to receive power-off signals and power-on signals. Upon receiving a power-on signal, the controller is further configured to receive a time signal indicative of a time interval from the last power-off signal to the current power-on signal. The controller is further configured to determine whether the time interval is greater than or equal to a first time threshold and less than a second time threshold, and brake the motor before start-up if the time interval is greater than or equal to the first time threshold and less than the second time threshold.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: October 17, 2023
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Zhen Xu, Junya Duan, Jifeng Feng
  • Patent number: 11784601
    Abstract: Disclosed is a motor control apparatus, a motor control system, and a motor control method that estimate a stator resistance and a rotor position for sensorless control of a motor.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: October 10, 2023
    Assignee: LG ELECTRONICS INC.
    Inventors: Kwang Sik Kim, Ha Min Song, Ki Wook Lee
  • Patent number: 11767698
    Abstract: The pinch detector includes a first portion that, in a first situation in which the member is being closed in a first closing movement but is stopped in an intermediate position not completely closed, obtains a reference value of a measured physical quantity of the motor, when braking the motor is ordered to stop the member, said reference value representing the physical quantity of the motor just before motor braking; a second portion that, in a second situation following the first situation and in which the member is moved in a second closing movement from said intermediate position not completely closed, compares current values of the measured physical quantity of the motor to a threshold value depending on said reference value in order to detect a pinch at closing member based on a comparison result.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: September 26, 2023
    Assignee: Aptiv Technologies Limited
    Inventors: Mateusz Romaszko, Piotr Maj
  • Patent number: 11769914
    Abstract: There is provided a working vehicle with increased safety by preventing deterioration of a battery due to over-discharge of the battery caused by an operator not noticing occurrence of a malfunction in driving by connected to an external power source. The working vehicle includes a charger, the battery, a sensor, a drive unit, a controller, a display unit, a battery management system, and a switch, in which the battery management system is configured to control the working vehicle to be switched to the driving by connected to the external power source when the switch is turned on after the charger is connected to an external power source and a valid signal for driving by connected to the external power source is received.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: September 26, 2023
    Assignee: TAKEUCHI MFG. CO., LTD.
    Inventors: Kengo Kumeuchi, Shumpei Okutani, Tetsuya Matsumoto
  • Patent number: 11761485
    Abstract: There is provided a controller for magnetic levitation equipment comprising a plurality of current source modules for connecting to at least one power supply for direct current, DC, and said current source modules comprising current channels for actuating coils of the magnetic levitation equipment, and a controller device connected to the current source modules by a control connection for controlling switching of electric current by the current source modules to the current channels. The current source modules combine discrete components for amplifying and switching electric current to the current channels into a single package. In this way, manufacturing and maintenance of the controller is facilitated, since manufacturing and maintenance may be based on the current source modules instead of discrete components, e.g. gate drivers, IGBTs, power mosfets and diodes.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: September 19, 2023
    Assignee: SPINDRIVE OY
    Inventors: Alexander Smirnov, Nikita Uzhegov
  • Patent number: 11760210
    Abstract: Methods and systems are provided for modulating undesired electric-motor braking. Based upon the detection of an inverter degradation event, one of a first gate driver and a second gate driver (e.g., a high gate driver and a low gate driver, such as for one phase of an inverter) may be asserted in an alternating manner while the other of the first gate driver and a second gate driver is de-asserted, and the first gate driver and second gate driver may then be provided to a power switch circuitry. The alternating assertion of the one of the first gate driver and the second gate driver may be associated with a higher-speed state, and the de-assertion of both the first gate driver and the second gate driver may be associated with a lower-speed state.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: September 19, 2023
    Assignee: DANA TM4 INC.
    Inventors: Charles Obry, Maalainine El Yacoubi
  • Patent number: 11764709
    Abstract: A motor controller comprises a switch circuit and a control unit. The switch circuit is coupled to a motor for driving the motor. The control unit generates a control signal to control the switch circuit. The motor controller determines a non-excitation time. When the motor is in a locked state, the motor controller enables the non-excitation time to be a variable value. The motor controller utilizes the non-excitation time to achieve a lock protection function. The motor controller determines whether the motor is in the locked state by detecting a rotor speed or a rotor temperature. Moreover, the motor controller further comprises a driving signal, where the driving signal has the non-excitation time.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: September 19, 2023
    Assignee: Global Mixed-mode Technology Inc.
    Inventor: Ching-Feng Lai
  • Patent number: 11754602
    Abstract: Systems and methods may be used to measure a frequency of a power delivery system and/or of a supply signal transmitted to a load. A system may record an input waveform, determine a frequency of the input waveform at a present time based at least in part on the input waveform and a derivative of the input waveform, and control an operation of a power delivery system based at least in part on the determined frequency.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: September 12, 2023
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Marcos A. Donolo, Jay Hartshorn