Patents Examined by Devon A Joseph
  • Patent number: 9902290
    Abstract: Disclosed is a reversing device for a motorcycle, including: a housing having first and second output holes; a first output shaft installed in the housing through the first output hole; a second output shaft installed in the housing through the second output hole; a motor supplying power to the first output shaft or the second output shaft; a first solenoid supplying operating power to the first output shaft; a second solenoid supplying operating power to the second output shaft; a decelerating part decelerating the power of the motor to transmit the decelerated power to the second output shaft; and a controller transmitting a driving signal to the motor, the first solenoid or the second solenoid.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: February 27, 2018
    Inventor: Baek In Lee
  • Patent number: 9906173
    Abstract: A method for estimating a motor parameter in a load commutated inverter arrangement, including the steps of: measuring a motor side ac-voltage; detecting commutation interval information of the measured motor side ac-voltage; estimating a motor parameter based on the detected commutation interval information; and indicating when the estimated motor parameter deviates from a monitoring parameter thereof.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: February 27, 2018
    Assignee: ABB Schweiz AG
    Inventors: Jan Wiik, Edgar Jellum, Trond Haugen, Harald Fretheim
  • Patent number: 9899952
    Abstract: A electric power steering control device equipped with a motor having a resolver detection unit includes: an ambient temperature detector for detecting ambient temperature around a portion generating heat by current flow; a motor temperature detector for, based on a signal from the resolver detection unit of the motor, estimating the temperature of the portion generating heat; and an abnormality determiner for comparing the temperature detected by the ambient temperature detector with the temperature detected by the motor temperature detector and determining that the ambient temperature detector is abnormal.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: February 20, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasushi Takemoto, Kazushi Kimura
  • Patent number: 9890811
    Abstract: A magnetic bearing system (120) includes a first active magnetic bearing (AMB) (202) including a first group of electromagnetic actuators (306, 310, 314, 318) to support a shaft and a second AMB (204) including a second group of electromagnetic actuators (308, 312, 316, 320) to support the shaft. A controller for the two AMB's includes a multi-phase topology (400) with a plurality of active current switches for controlling the electromagnetic actuators (306-320) of each of the first AMB (202) and the second AMB (204). Each electromagnetic actuator (306, 310, 314, 318) of the first AMB (202) is electrically coupled to an electromagnetic actuator (308, 312, 316, 320) of the second AMB (204).
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: February 13, 2018
    Inventors: Parag Kshirsagar, Peng Yan
  • Patent number: 9893668
    Abstract: Embodiments of the present invention relate to an a method, apparatus and computer program product for controlling the operation of a drive unit comprising a plurality of switching modules arranged to receive a DC electricity supply and generate an AC electricity supply for driving a load from the received DC electricity supply, the AC electricity supply being generated by the switching of the plurality of switching modules between a conducting state and a non-conducting state. The method comprises receiving one or more characteristics associated with each of the switching modules, comparing, for each switching module of the plurality of switching modules, a characteristic of the switching module with an equivalent characteristic associated with one or more other switching modules of the plurality of switching modules, and controlling a time period during which one or more of the plurality of switching modules are in the conducting state in accordance with a result of the comparison.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: February 13, 2018
    Inventors: Simon David Hart, Michael Cade, Richard Mark Wain
  • Patent number: 9866156
    Abstract: A motor control device for controlling a brushless DC motor in a PWM control manner using an inverter circuit according to a position-sensorless method includes: a ripple current estimating device; and a control device. When the magnitude of the ripple current is less than or equal to a threshold value, the control device performs balanced-drive switching that a first output terminal of the inverter circuit is repeatedly and alternately connected to high and low voltage sides of a drive power supply, and the second output terminal of the inverter circuit is repeatedly and alternately connected to the low and high voltage sides. When the magnitude of the ripple current exceeds the threshold value, the control device performs unbalanced-drive switching that the first output terminal is repeatedly and alternately connected to the high and low voltage sides, and the second output terminal is connected only to the low voltage side.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: January 9, 2018
    Inventor: Yasuharu Nishiyama
  • Patent number: 9859829
    Abstract: In a motor control device, a velocity feed-forward control portion includes a velocity-side acceleration input portion that outputs received high-order command acceleration as a velocity-side acceleration output; a velocity-side velocity input portion that outputs a received high-order command velocity as a velocity-side velocity output; velocity-side boundary-velocity input portions which are prepared so as to respectively correspond to boundary velocities, and to output velocity-side boundary velocity outputs from the velocity-side boundary-velocity input portions corresponding to the high-order command velocity, the boundary velocities being velocities at boundaries of preset adjacent velocity ranges obtained by dividing a limited velocity range; a velocity-side first weight learning portion that changes velocity-side first learning weights in accordance with a velocity deviation, the velocity-side first learning weights respectively corresponding to velocity-side first outputs; and a velocity-side output
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: January 2, 2018
    Inventors: Kazuya Numazaki, Yasuharu Mukai
  • Patent number: 9815193
    Abstract: A holding system includes a force control module configured to generate a force signal to cause a holding device to perform at least one of a hold stroke and a release stroke. The hold stroke includes transitioning a gripping element of the holding device to a first position to grip an object. The release stroke includes transitioning the gripping element to a second position to release the object. The holding device is non-backdrivable. A stall detection module is configured to (i) monitor a sensor signal received from a sensor of an electric motor assembly of the holding device and (ii) detect a first stall condition of an electric motor based on the sensor signal. A shut off module is configured to shut off current to the electric motor based on the detection of the first stall condition during or at an end of the release stroke.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: November 14, 2017
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Orlando Trujillo, James W. Geary
  • Patent number: 9812981
    Abstract: One or more variable configuration controller (VCC) systems may produce various combinations of series or parallel couplings of coils, winding or inductive elements of an electric machine such as a generator and/or electric motor. The VCC systems include a plurality of bridge rectifiers, and a first number of switches operated to selectively couple respective pairs of coils in series from parallel on an AC side of the bridge rectifiers. The bridge rectifiers provide for automatic electrical isolation of coils on occurrence of open circuit, low voltage or short circuit conditions. A second number of switches with different performance characteristics (e.g., speed, loss) than the first number of switches may be coupled in parallel with respective ones of the first number of switches. Power factor correction may be used.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: November 7, 2017
    Assignee: Exro Technologies Inc.
    Inventors: Jonathan Gale Ritchey, Mitchell Gordon Burton, Ryan Biffard
  • Patent number: 9806664
    Abstract: When electric power supply is started, an initial driving operation is performed to switch over a power supply phase of a motor in open-loop control. Initial learning processing is performed to learn a phase deviation correction value for the power supply phase relative to a count value of a pulse signal of an encoder. As a restraint caused by a shape of a detent mechanism, the motor need be rotationally driven so that a detent lever does not move in a negative direction beyond a bottom position of a P-range in the initial driving operation. In a case of performing the initial learning processing in the P-range in consideration of this restraint, the initial learning processing is performed by setting a rotation direction of the motor.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: October 31, 2017
    Inventors: Kazuhiro Yoshida, Jun Yamada, Masaaki Shinojima
  • Patent number: 9800098
    Abstract: A pumping set includes an electric drive motor, which exhibits a stator casing and at least one terminal box connected with the latter, wherein the interior of the terminal box exhibits at least one separating wall, which divides an interior space of the terminal box into at least one electronics area with electronic components and a connection area, wherein the connection area incorporates both electrical connections for at least one connection line along with contacts for establishing an electrical connection with electrical or electronic components arranged inside the stator casing.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: October 24, 2017
    Assignee: Grundfos Holding a/s
    Inventors: Georg Blaser, Pino Broesamle
  • Patent number: 9787212
    Abstract: Motor drive power conversion systems are provided including a rectifier and a switching inverter, wherein the switching devices of the rectifier, the inverter and/or of a DC/DC converter are silicon carbide switches, such as silicon carbide MOSFETs. Driver circuits are provided for providing bipolar gate drive signals to the silicon carbide MOSFETs, including providing negative gate-source voltage for controlling the off state of enhancement mode low side drivers and positive gate-source voltage for controlling the off state of enhancement mode high side drivers.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: October 10, 2017
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Kevin Baumann, Richard Lukaszewski, Rangarajan Tallam, Lixiang Wei, Lee Gettelfinger, Garron Morris, Bruce Weiss, Neil Gollhardt, Navid R. Zargari, William Brumsickle, Robert Wright Reese, Stephen E. Denning
  • Patent number: 9755558
    Abstract: Systems and methods for controlling the operating speed and the torque of an electric motor using an operational model are described. An operational model for the electric motor, including a plot of engine performance parameters, is used for reference, and a most efficient output path, which may pass through an optimal operation region in the operational model, is selected. The most efficient output path may be determined, for example, according to locations of a current output state and a to-be-reached target state in the operational model, enabling the operating state of the motor to reach the target state from the current operating state. By selecting a more efficient output path, the operating efficiency of the motor may be optimized, the life of a battery improved and/or the operating mileage of the vehicle may be increased, without significantly reducing the driving experience.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: September 5, 2017
    Inventor: Sheng-Fu Lai
  • Patent number: 9746893
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for identifying, for each of multiple circuits of an electrical device, a discharge time that indicates an amount of time previously taken for a voltage level of the circuit to decrease from a normal operating voltage to a specified voltage level after power was removed from the circuit. A delay time period is determined for the electrical device based on each discharge time. A command is received to cycle power to one or more components of the electrical device. In response to receiving the command, power is removed from the circuits for an amount of time that corresponds to the delay time period and power is restored to the circuits in response to the amount of time lapsing.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: August 29, 2017
    Assignee: Google Inc.
    Inventors: Gregory Sizikov, Richard Roy
  • Patent number: 9735715
    Abstract: A controller configured to be coupled to an electric motor. The controller including a processor programmed to receive a signal indicating a stopping command of the electric motor, and control a current such that a capacitor coupled to the electric motor is not overcharged by regenerative energy when a stopping of the electric motor has commenced, wherein controlling the current includes one of the following: upon receiving the signal indicating the stopping command of the electric motor, ramping the current down below a threshold level, or upon receiving the signal indicating the stopping command of the electric motor, forcing the current to circulate in motor windings to prevent regeneration of energy in the capacitor.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 15, 2017
    Assignee: Regal Beloit America, Inc.
    Inventors: Ludovic Andre Chretien, Roger C. Becerra
  • Patent number: 9716451
    Abstract: A semiconductor device that controls a motor driving device. The semiconductor device includes: a position detection section that detects changes in a turning position of a rotor provided at a motor and outputs detection signals corresponding to the changing turning position; a first switching section that, in accordance with the detection signals, outputs ground switching signals, which switch which end portion of a coil is connected to a ground side, to a first switching circuit; and a second switching section that, in accordance with the detection signals, outputs connection switching signals, which switch which end portion of the coil is connected to a driving power supply side, to a third switching circuit that controls the switching of connections between the end portions of the coil and the driving power supply side by a second switching circuit.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: July 25, 2017
    Inventor: Takashi Yamashita
  • Patent number: 9688249
    Abstract: An apparatus of detecting a position of a rotating member includes a cam plate connected to the rotating member. The cam plate includes a plurality of segments that are spaced apart from each other. The plurality of segments are disposed in an annular shape. A fixed ring is disposed between the cam plate and the worm wheel. A first contact point is in contact with an interior portion of any one of the segments and maintaining a fixed state. A second contact point is formed at an external circumferential portion of any one of the segments and is in contact with the fixed ring.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: June 27, 2017
    Inventors: Sang Woo Chun, Jin Gyu Hong
  • Patent number: 9647513
    Abstract: An actuator unit, a robot including the same, and a reducing apparatus, the actuator unit including a driving unit; a sensor unit; a control unit; and a frame unit.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: May 9, 2017
    Inventors: Jung-jun Park, Byeong-sang Kim, Kang-min Park, Jae-chul Hwang
  • Patent number: 9647597
    Abstract: A motor control apparatus includes a voltage regulator to execute a voltage increase mode to increase a voltage applied to an induction motor from a lower limit of a first range over time. A frequency regulator executes a frequency decrease mode to decrease a frequency of the voltage from an upper limit of a second range over time. The frequency regulator limits decrease of the frequency when a bus voltage of a bus exceeds a first threshold in the frequency decrease mode. The bus supplies DC power to an inverter to drive the motor. A mode changer alternatively changes the voltage increase mode and the frequency decrease mode to control the motor to change from a free running state to a state in which the voltage and the frequency satisfy a relationship. The determinator determines whether the voltage and the frequency satisfy the relationship.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: May 9, 2017
    Inventors: Shuji Matsuda, Hideaki Iura
  • Patent number: 9647590
    Abstract: A phase compensation apparatus in an inverter output voltage in a system is provided, whereby performance of an inverter can be enhanced by compensating a time delay of measured voltage of inverter output voltage detection unit.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 9, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Seungcheol Choi, Anno Yoo