Patents Examined by Zoheb S Imtiaz
  • Patent number: 10767566
    Abstract: An electric propulsion system for a gas turbine engine may comprise an electric motor disposed within a nacelle of the gas turbine engine, wherein the electric motor is configured to receive a bypass air from a fan bypass duct for cooling the electric motor and the electric motor is configured to drive a low speed shaft of the gas turbine engine.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: September 8, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Patent number: 10730406
    Abstract: An electronic control system for vehicle seatbacks is provided. The electronic control system can detect an obstruction or a motor stall by comparing the energy consumed by a seatback motor with an obstruction threshold and a stall threshold, the threshold being selected based upon the position of the seatback. The electronic control system can additionally control the synchronous folding of two or more adjacent powered seatbacks. The electronic control system causes the motor for the lagging seatback to receive a maximum driving voltage and causes the motor for the leading seatback to receive a partial driving voltage. Once the seatbacks are in alignment, a normal driving voltage is provided to both motors.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: August 4, 2020
    Assignee: HELLA GmbH & Co. KGaA
    Inventor: Mark A. Enderich
  • Patent number: 10727776
    Abstract: A control unit calculates necessary power necessary to drive a motor in accordance with a torque designation value and a rotational speed of a motor, sets a voltage value to a predetermined voltage value, changes a current value in accordance with the necessary power, and drive the motor in a case in which the calculated necessary power is less than a predetermined threshold value, and sets the current value to a predetermined current value, changes the voltage value in accordance with the necessary power, and drives the motor in a case in which the calculated necessary power is equal to or greater than the predetermined threshold value.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: July 28, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Yoshihisa Okuhata, Tadayuki Hatsuda
  • Patent number: 10720872
    Abstract: A motor control device includes a rectifier which converts AC power into DC power and outputs it to a DC link, an inverter which converts the DC power of the DC link into AC power for each motor and outputs it, an AC voltage detection unit which detects an AC voltage value on the AC input side of the rectifier, a state determination unit which determines that a voltage dropped state has been set when the AC voltage value is smaller than a certain specified voltage and that a normal state has been set when the AC voltage value is equal to or larger than the specified voltage, and an output control unit which controls each motor in accordance with the amount of voltage drop with respect to the specified voltage of the AC voltage value when the state determination unit determines that the voltage dropped state has been set.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: July 21, 2020
    Assignee: FANUC CORPORATION
    Inventors: Shunpei Tanaka, Shinichi Horikoshi, Yuuta Sekikawa, Kenta Yamamoto
  • Patent number: 10707787
    Abstract: A motor, a driving circuit thereof and a driving method thereof are provided. The motor driving method includes: during a motor starting stage, when a detected rotor magnetic field is a first polarity and a polarity of an AC power source is positive, or the detected rotor magnetic field is a second polarity and the polarity of the AC power source is negative after a zero voltage crossing point of the AC power source, instantly sending a trigger pulse to a controllable bidirectional AC switch connected in series with a motor winding at both ends of the AC power source; during a motor operating stage, after the zero voltage crossing point of the AC power source, sending a trigger pulse to the controllable bidirectional AC switch after a delay time after the zero voltage crossing point. This method can provide a large torque during the motor starting stage.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: July 7, 2020
    Assignee: Johnson Electric International AG
    Inventors: Chiping Sun, Shinghin Yeung, Haibo Jiang, Guodong Liu, Shujuan Huang
  • Patent number: 10680471
    Abstract: A permanent magnet motor is provided, which includes a rotor including a rotation axle and a plurality of magnetized rotor magnets on a periphery, which rotor magnets are magnetized to form alternately N-poles and S-poles; first and second ring-shaped-claw-pole units, whose inner circumferences face the rotor magnets, including a plurality of first and second claw-poles along the inner circumference, the first and the second claw-poles being closely adjacent to each other extending alternately in upward and downward axis directions of the rotation axle, bottom sides of the first and the second claw-poles forming a ring shape. A first opening portion is formed in a first joint surface of the first ring-shaped-claw-pole unit, to be joined to the second ring-shaped-claw-pole unit, and the second opening portion is formed in a second joint surface of the second ring-shaped-claw-pole unit, to be joined to the first ring-shaped-claw-pole unit.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: June 9, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takashi Hashimoto, Takahisa Koike, Haruyuki Suzuki, Eiki Yoshimizu, Norihiro Yamamoto
  • Patent number: 10673371
    Abstract: A motor control device is provided. In this motor control device, a first switching circuit group and a second switching circuit respectively provided between first and second microcomputers and first and second power converters receive drive signals generated by the microcomputers included in the own system and other drive signals generated by a microcomputer other than the microcomputers of the own system, select the own drive signal or the other drive signal according to selection signal from the microcomputers of the own system, and output the selected drive signal to the power converter of the own system. The first and second microcomputers output the selection signals to the switching circuit groups of the own system so as to select the own drive signal when the microcomputers are operating normally, and output the selection signal so as to select the other drive signal when a monitoring circuit of the system detects an faulty in the microcomputers.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: June 2, 2020
    Assignee: DENSO CORPORATION
    Inventor: Tomoharu Hayakawa
  • Patent number: 10666040
    Abstract: A machine, specifically a pump, a compressor, an agitator or a hoist, includes at least one motor and one machine protection circuit that includes a measurement device having at least one sensor for monitoring at least one parameter of the machine and includes an analysis device for analysing the parameters measured by the sensor and for activating a machine protection relay for switching off the machine. A switch cabinet positioned away from the machine is provided, and the machine protection circuit is spatially separated by the measurement device being arranged in the machine, and by the analysis device and the machine protection relay being arranged in the switch cabinet.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: May 26, 2020
    Assignee: KRIWAN INDUSTRIE-ELEKTRONIK GMBH
    Inventor: Christian Ellwein
  • Patent number: 10666179
    Abstract: A control system includes a plurality of control devices each including an initial check unit that performs an initial check before drive control of a rotary electric machine, a transmission/reception unit that transmits/receives an end signal indicating that the initial check is ended, and a drive control unit that performs the drive control of the rotary electric machine after the initial check. The drive control unit starts the drive control of the rotary electric machine when the initial check of the corresponding control device is ended and the end signal is acquired from another control device, and starts the drive control of the rotary electric machine after a lapse of a predetermined time from the start of the initial check of the corresponding control device when the initial check of the corresponding control device is ended and the end signal is not acquired from the another control device.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 26, 2020
    Assignee: DENSO CORPORATION
    Inventors: Koichi Nakamura, Shuji Kuramitsu, Atsuko Oka
  • Patent number: 10658965
    Abstract: The motor vehicle comprises an overcurrent detector configured to detect overcurrent in each of a plurality of second switching elements included in the second inverter. When the motor vehicle has an abnormality and is driven by the emergency drive with output of a torque from the first motor to the one wheels, the motor vehicle performs zero torque control that controls the second inverter such that a torque of the second motor becomes equal to zero.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: May 19, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shinichiro Minegishi
  • Patent number: 10655583
    Abstract: A method for operating an electromagnetic actuator includes an actuation event utilizing a current waveform for the actuator characterized by an initial peak pull-in current in a first direction of current flow when the actuator is commanded to an actuated position; and a reversed peak current in a second opposite direction of current flow applied after the actuator is commanded to a rest position. The reversed peak current has a magnitude that is greater than the magnitude of the initial peak pull-in current.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: May 19, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Avoki M. Omekanda, Chandra S. Namuduri, Suresh Gopalakrishnan, Thomas W. Nehl
  • Patent number: 10658952
    Abstract: A drive system includes a power converter and a motor powered from the power converter via supply leads. An electromagnetically actuatable brake is disposed on the motor. The brake is able to be supplied and is therefore controllable from an AC/DC converter, which is powered via lines from a DC/AC converter that is powered and/or controlled by signal electronics of the power converter.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 19, 2020
    Assignee: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Josef Schmidt, Michael Geissler, Maja Sliskovic, Dieter Groß, Jürgen Böckle
  • Patent number: 10646302
    Abstract: A medical observation device includes: an imaging device; a support unit that supports the image-capturing unit and includes arms and joints rotatably connecting the arms; a motor that applies power to at least one of the joints, and rotates two of the arms connected at the joint relative to each other; a gear mechanism that includes two intermeshing gears and is disposed in a power transmission path from the motor to the at least one joint; an operation receiver that receives a user operation; and a controller that performs first control for causing the motor to rotate in accordance with the user operation received by the operation receiver and performs second control after the first control is completed and rotation of the motor is stopped.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: May 12, 2020
    Assignee: SONY OLYMPUS MEDICAL SOLUTIONS INC.
    Inventors: Shigeru Tamura, Hiroki Saijo
  • Patent number: 10644619
    Abstract: A disclosed motor control device includes: a PI controller which controls a velocity of a motor; an input unit which receives specification information including information of a weight and a center of mass of a tool; a calculation unit which calculates a gravitational torque based on the specification information; a storage which stores the gravitational torque output from the calculation unit and an integral value output from the PI controller, and outputs the gravitational torque and the integral value in response to a break signal; and a selection unit which sets, to the PI controller, the integral value output from the storage, according to a collision sensitivity input from the input unit.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: May 5, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ryosuke Yamamoto, Hiroyuki Nakata, Atsumi Hashimoto, Yasuyoshi Honuchi
  • Patent number: 10644617
    Abstract: A controller is capable of improving position detection accuracy during the stopping of an actuator, and controlling the actuator with high stability and quick responsiveness during driving. A first position signal corresponding to an amount of relative movement between the actuator and a driven element is output to a filter, and the filter outputs a second position signal generated by attenuating signal components having frequencies except a specific frequency band. Driving and stopping of the actuator are controlled according to the second position signal. As the specific frequency band, a first frequency band is set in the filter during the driving of the actuator, and a second frequency band is set in the filter during the stopping of the actuator. The first frequency band and the second frequency band both include 0 Hz, and the second frequency band is narrower than the first frequency band.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: May 5, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenichi Kataoka
  • Patent number: 10634390
    Abstract: An electric compressor includes a compression portion discharging a high pressure refrigerant by compressing a low-pressure drawn refrigerant, an electric motor driving the compression portion with a rotation of a rotor, a motor drive circuit driving the electric motor, an intermediate pressure port through which an intermediate pressure refrigerant is introduced into the compression portion, and a controller performing a rotation control of the rotor. When the controller stops the electric motor in a two-step compression mode in which the intermediate pressure refrigerant is introduced into the compression portion, the controller stops the rotor rotating by performing short-circuit braking on the electric motor and then fixes a rotational position of the rotor at a predetermined rotational position by performing direct current excitation on the electric motor.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: April 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Teruaki Ohyama, Koji Sakai, Yuuji Kamiya, Tomoyuki Sumi
  • Patent number: 10622929
    Abstract: An actuator includes a yoke extending about a rotation axis. A coil is wrapped about the yoke. A rotor having a direct axis and a quadrature axis is supported for rotation about a rotation axis relative to the yoke. The rotor has a reluctance along the direct axis that is different than a reluctance along the quadrature axis to rotate the rotor when current is applied to the coil.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: April 14, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Jacek F. Gieras
  • Patent number: 10615682
    Abstract: An electrically driven vehicle inverter device includes a smoothing capacitor, a discharge resistor, a discharge resistor and first and second discharge switching elements connected in series between both ends of the smoothing capacitor, and a clamp circuit provided for at least one of the first and second discharge switching elements. The clamp circuit includes a reverse flow prevention element and a constant voltage generation element that causes a constant voltage drop when a voltage across the constant voltage generation element exceeds a value determined in advance, for example.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: April 7, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Yasushi Nakamura, Tomoya Hirano
  • Patent number: 10610313
    Abstract: A surgical tool having an elongated shaft having a proximal end and distal end. A surgical end effector is located about the distal end. The surgical end effector has a plurality of effector mechanisms comprising a plurality of degree of freedoms. An effector body is located at the proximal end. The effector body includes a plurality of motor interfaces for driving the plurality of effector mechanisms. A transmission is coupled to the effector body.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 7, 2020
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: David W. Bailey, Theodore W. Rogers, Rumen Deyanov, Ray Lathrop, Gabriel Brisson
  • Patent number: 10615734
    Abstract: To determine a driving parameter for driving a motor having an unknown circuit constant in a simple way and to shorten time required for the determination.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: April 7, 2020
    Assignee: FANUC CORPORATION
    Inventors: Kouki Oikawa, Yuuki Morita, Tadashi Okita