Patents Examined by Charles S Laughlin
  • Patent number: 10547262
    Abstract: In some examples, a controller device includes processing circuitry configured to determine an alpha voltage and a beta voltage based on time durations for control signals for power-conversion circuitry that drives an electric motor including a rotor. In some examples, the controller device also includes a flux estimator configured to estimate a speed of the rotor and an angle of the rotor based on the alpha voltage and the beta voltage.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: January 28, 2020
    Assignee: Infineon Technologies Austria AG
    Inventor: Wei Wu
  • Patent number: 10525596
    Abstract: A remote controlled, tele-operated welder includes a multi-axis robot arm, video cameras, sensors a specialized control station that allows an operator to perform flood-fill welding operations at a remote location to avoid the heat, smoke and other environmental effects produced through typical flood-welding operations. The operator accesses the control unit (OCU) using a GUI and mouse, keyboard, joystick, or other custom controls, and observe the piece via the cameras (visual, thermal, or other) placed in the welding station via a feed displayed on the OCU display(s). Audio, video, and/or tactile feedback may be provided to indicate arm, welder, or other system status, for collision warning and arm motion singularity avoidance. Augmented reality informational graphic/textual overlays may provide guidance to an operator, and the apparatus may further include the ability to repeat series of steps needed to handle flood-weld on a given piece, repeatedly across many pieces.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: January 7, 2020
    Inventor: Darryl Hammock
  • Patent number: 10527049
    Abstract: A system and method for controlling bending modes of a rotor assembly is disclosed. The rotor assembly can be supported by one or more bearings in an integrated machine. The method can include accelerating the rotor assembly to a first rotational speed via a first torsional force applied to the drive shaft and then removing the first torsional force. The method can also include obtaining first measurements of the rotational speed and frequency of one or more bending modes of the rotor assembly during a first rotary machine coast down period from the first rotational speed. The process can be repeated to determine a relationship between rotational speed, bending mode frequency, and gain. The one or more bearings can then be controlled based on the measurements and the relationship. The system can have one or more processors or controllers to implement the method.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: January 7, 2020
    Assignee: Solar Turbines Incorporated
    Inventors: Lei Zhu, Jason Wing-bin Fong
  • Patent number: 10518599
    Abstract: Provided is a damper with which the energy efficiency for attenuating input vibration corresponding to the unsprung resonance frequency and the sprung resonance frequency can be improved. Also provided is a method for manufacturing this damper. In this damper the electrical resonance frequency, as specified by the inductance of an electromagnetic motor and the capacitance of a capacitor, is set within ±20% of the unsprung resonance frequency, thereby enabling the input vibration corresponding to the sprung resonance frequency as well as the input vibration corresponding to the unsprung resonance frequency to be reduced.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: December 31, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventor: Nobuharu Kuriki
  • Patent number: 10520898
    Abstract: A driving processor for driving a motor having a rotor and one or more coils for rotating the rotor is configured to generate a detection pulse for detecting whether or not the rotor has rotated; cause the generated detection pulse to be applied to at least one of the one or more coils; receive a signal indicating a detected value of current flowing in the at least one of the one or more coils after the detection pulse has been outputted to the at least one of the one or more coils; and determine whether or not the rotor has rotated to one or more prescribed positions on the basis of the detected value of current.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: December 31, 2019
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Yuta Saito
  • Patent number: 10498266
    Abstract: To correct a frequency deviation generated in an input signal to an analog filter according to the rotation of a rotor in a resolver, a resolver correction device includes a phase shifter which shifts the phase of a first phase signal of the resolver, with respect to the signals at least having two phases and more, detected by the resolver. The phase-shifted first phase signal and a second phase signal are added, as a phase modulation signal with the excitation signal modulated by a rotation angle of the rotor in the resolver. A phase difference correction signal is generated based on a phase difference between the phase modulation signal of the resolver and the excitation signal. The adjusting amount of the phase shifter is calculated based on the phase difference correction signal, in which the phase shifter adjusts a phase shift amount according to the adjusting amount.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: December 3, 2019
    Inventor: Yoshifumi Ikenaga
  • Patent number: 10495682
    Abstract: Disclosed are an apparatus and a method for predicting a fault state of an inverter. The apparatus for predicting a fault state of an inverter includes: an inverter converting DC power into AC power; a switching element provided in the inverter; and a controller extracting a fault sign factor based on an output signal output from the inverter and predicting a fault of the switching element based on the fault sign factor.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: December 3, 2019
    Assignees: Hyundai Motor Company, Seoul National University R&DB Foundation
    Inventors: Deog Hyeon Kim, Yong Un Cho, Yongchae Lim, Byeng Dong Youn, Hyunseok Oh, Junmin Lee
  • Patent number: 10498281
    Abstract: A motor control system includes a motor, a driving module and a control module. A first coil is electrically connected to a first node where a first control signal is provided, a second coil is electrically connected to a second node where a second control signal is provided, and a third coil is electrically connected to a third node where a third control signal is provided. An constant value of the first control signal is not zero, and a lower signal voltage limit of the first control signal is larger than or equal to zero.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: December 3, 2019
    Inventors: Ming-Jung Tsai, Li-Wei Chen
  • Patent number: 10491095
    Abstract: A hybrid electric vehicle includes a traction battery, traction motor and power inverter therebetween. The power inverter converts the DC power of the traction battery to AC power to drive each phase of the traction motor. The power inverter includes Insulated Gate Bipolar junction Transistors (IGBTs) to modulate the power to the traction motor. The speed at which the IGBTs are modulated impacts the system performance including power loss, voltage overshoot and current overshoot. Using a dual emitter IGBT to provide a current mirror of the drive current, circuitry may be used with the gate drive circuitry such that the gate drive speed may be dynamically adjusted based on characteristics including temperature and traction motor rotational speed.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: November 26, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Lihua Chen, Dong Cao, Shailesh Shrikant Kozarekar, Shahram Zarei, Hongjie Wu, Yuqing Tang
  • Patent number: 10491149
    Abstract: Embodiments of the present invention are directed to a controller that is configured to limit the rate of change of speed of a motor (e.g., the acceleration or deceleration) regardless of the operating mode of the motor (e.g., speed, torque, or power control mode). The controller can include an acceleration estimator which monitors the output speed of a motor and provides an acceleration-limited speed set point. The output of the acceleration estimator may be limited to a range of acceptable acceleration values that correspond to the required limits of acceleration and deceleration. The acceleration estimator can be configured such that it causes the speed regulator to override the torque and/or power regulators when the acceleration range is exceeded.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 26, 2019
    Assignee: DRS Power & Control Technologies, Inc.
    Inventor: David J. Gritter
  • Patent number: 10483884
    Abstract: An electric tool control circuit includes a central control module, a motor drive module, a motor, and a working parameter detection module. The working parameter detection module is separately electrically connected to the motor and the central control module, and the working parameter detection module can return a parameter that is detected when the motor works to the central control module. The motor drive module is separately electrically connected to the motor by using first and second switch modules, and the motor drive module controls the first and second modules to be discontinuously on and off. The features of first switch module and the second switch module being on and off are always contrary, that is, when a first switch is on, a second switch is off, and when the first switch is off, the second switch is on.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: November 19, 2019
    Assignee: Suzhou Cleva Electric Appliance Co., Ltd
    Inventor: Fufei Wu
  • Patent number: 10483881
    Abstract: A method for torque compensation of a motor associated with a medical instrument includes determining a torque profile for a motor, the torque profile defining torque output as a function of rotor angle and during operation of the motor, compensating for deviations in the torque profile by adjusting an input signal to the motor, the compensating being based on the torque profile and rotor position.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: November 19, 2019
    Inventors: Hsien-Hsin Liao, Niels Smaby, Gregory W. Dachs, II, Pushkar Hingwe, Amir Chaghajerdi
  • Patent number: 10464534
    Abstract: A method for washing a window of a vehicle, using at least one wiper blade member and a liquid projector that projects liquid for washing the window onto a wiping surface has a first wiping cycle including a first step of actuating the wiper blade member to move over the window in a first direction from a first starting position to a wiping end position, while projecting the liquid onto the wiping surface, and a second step of actuating the wiper blade member to move over the window in a second direction opposite the first direction from the wiping end position to the first starting position, and a second wiping cycle including a third step of actuating the wiper blade member to move over the window in the first direction from the first starting position to the wiping end position, while projecting the liquid onto the wiping surface.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: November 5, 2019
    Assignee: Valeo Systèmes d'Essuyage
    Inventor: Denis Thebault
  • Patent number: 10468948
    Abstract: An electric motor is controlled by means of pulse-width modulated control signal having edge transitions occurring at certain transition count values of the pulses of a clock signal which is frequency-modulated with a step-wise frequency modulation (e.g., SSCG or Spread Spectrum Clock Generation). A frequency unmodulated clock signal is provided having a fixed period indicative of the period of the pulse-width modulated control signals. The transition count values are set as a function of a predicted count value and/or a predicted frequency value for the frequency-modulated clock signal. Prediction occurs as a function of the frequency unmodulated clock signal, so that the transition count values are compensated against the step-wise (e.g., SSCG) frequency modulation.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: November 5, 2019
    Inventors: Giuseppe D'angelo, Michele Bisogno, Virginia Clemente
  • Patent number: 10459033
    Abstract: A method for protecting a nonmobile work machine driven by an electric motor includes determining, via a measuring unit, at least one measured value of a time-critical parameter of the work machine. The work machine is switched off when the determined measured value of the time-critical parameter is outside a predefined setpoint range. The determined measured value of the time-critical parameter is quantized in a level signal and transmitted as a first signal to an evaluation unit via an interface, and a second signal for further information concerning the work machine, to be transmitted from the measuring unit to the evaluation unit, is modulated to the first signal.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: October 29, 2019
    Inventors: Christian Ellwein, Xiaoming Peng, Christian Grub
  • Patent number: 10447191
    Abstract: Disclosed herein is a technique for reducing harmonics resulting from the rotation of a motor and generated in a power supply current. This power converter device includes a compensation current generator (52) configured to control compensation currents (Icr, Ics, Ict) flowing between itself (52) and an AC power supply (12), and a compensation controller (60; 260) configured to obtain output voltage instruction values (Vid, Viq) such that the compensation currents (Icr, Ics, Ict) cancel a harmonic component in load currents (Ir, Is, It) flowing from the AC power supply (12) into a rectifier (22) and resulting from the rotation of the motor (16) and a harmonic component in the load currents (Ir, Is, It) and dependent on a period (Ts) of a voltage of the AC power supply (12).
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: October 15, 2019
    Assignee: Daikin Industries, Ltd.
    Inventor: Reiji Kawashima
  • Patent number: 10439541
    Abstract: A vehicle is provided with a multiphase electrical machine, a first onboard electrical sub-system having a first nominal DC voltage, and a second onboard electrical sub-system having a second nominal DC voltage. The electrical machine includes a rotor, a first stator system and a second stator system. The first onboard electrical sub-system includes a first inverter with a first link capacitor. The first stator system is associated with the first inverter. The second onboard electrical sub-system includes a second inverter with a second link capacitor. The second stator system is associated with the second inverter. The first stator system is configured in a star configuration. The second stator system is configured in a star configuration or in a delta configuration. A transfer circuit connects the star point of the first stator system to a higher potential of the second onboard electrical sub-system.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: October 8, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Daniel Findeisen, Dominik Hecker, Matthias Gorka
  • Patent number: 10432115
    Abstract: A motor driving control apparatus in embodiments includes: a first signal generator to generate a first signal representing any one rotation angle section of plural rotation angle sections according to a sensor signal that changes every predetermined rotation angle of a rotor; a measurement unit to measure a period of each of the rotation angle sections; a prediction unit to predict a period of a next rotation section based on one or plural measured rotation angle sections; a second signal generator to generate a second signal representing a relative rotation angle of the rotor in the next rotation angle section for each period obtained by dividing the predicted period by a predetermined number; and a third signal generator to generate a third signal corresponding to a rotation angle of the rotor based on the first and second signals.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: October 1, 2019
    Inventors: Masato Tanaka, Hiromi Hagiwara, Kazuo Asanuma, Hirokazu Shirakawa
  • Patent number: 10404203
    Abstract: An adapter kit for a battery powered rotary tool having a housing extender coaxially affixable to an end of the rotary tool tubular housing, a rechargeable battery, a motor driver circuit, mounted with a microprocessor coupled to a solid-state switch circuit which connects the motor of the rotary tool to the battery; and a user interface mounted to the housing extender having a user input and at least one indicator light. The microprocessor is configured to, in response to a user providing a signal via the user input, provide a signal to the solid-state switch circuit sending a power input to the motor so it can be switched between at least the following modes of motor operation: forward rotation, reverse rotation, an alternating forward-reverse pulsation, and OFF. A rotary tool having the above functions is also disclosed as well as a rotary swab for use therewith.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: September 3, 2019
    Inventor: John R. Choate
  • Patent number: 10401768
    Abstract: A signal level adjustment apparatus includes a detector configured to detect both a plurality of peak levels of an input signal having a sinusoidal waveform or a substantially sinusoidal waveform and a plurality of bottom levels of the input signal; and a level adjuster configured to adjust, in a predetermined zone of the input signal, levels of the input signal based on the plurality of peak levels and the plurality of bottom levels detected by the detector.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: September 3, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tetsuroh Tatebe, Tomohiko Kamatani