Patents by Inventor Yoshihiko Kinpara

Yoshihiko Kinpara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11047679
    Abstract: An angle detecting apparatus is obtained. The angle detecting apparatus is capable of correcting an electrical angle frequency component of an angle signal contained angle signal. An angle detecting apparatus computes an angle signal of a rotary machine from a sine signal and a cosine signal obtained from the angle signal. Offset correction values for the sine signal and the cosine signal are computed from the angle signal. The computed offset correction value for the sine signal is added to the sine signal to correct the sine signal, and the computed offset correction value for the cosine signal is added to the cosine signal to correct the cosine signal.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: June 29, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Tetsuya Kojima, Yoshihiko Kinpara, Takayuki Kifuku
  • Patent number: 10421483
    Abstract: An input/output device is connected, via an in-vehicle communication network, to a control device for controlling a motor provided in an electric power steering apparatus that is provided in a vehicle. The input/output device generates an excitation start instruction signal for starting excitation in the motor on the basis of an externally input excitation start instruction, transmits the generated excitation start instruction signal to the control device over the in-vehicle communication network, and receives response data relating to the excitation of the electric power steering apparatus, the response data being detected by the control device while the excitation is underway, from the control device over the in-vehicle communication network.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: September 24, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Isao Kezobo, Yoshihiko Kinpara, Hidetoshi Ikeda
  • Patent number: 10202146
    Abstract: A steering control device capable of causing a steering torque to follow a target steering torque when a driver holds a steering wheel for steering, and making an adjustment so that the steering wheel returns to a neutral position at an appropriate speed, when the driver releases his or her hands from the steering wheel. A motor is controlled based on a motor steering assist torque, which is a sum of a first steering assist torque, which is proportional to an integral value of a deviation between the target steering torque and the steering torque, and a second steering assist torque, which is proportional to a motor rotational angular velocity and acting in a direction of suppressing a return speed of the steering wheel when the steering wheel returns to the neutral position.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: February 12, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masaya Endo, Hidetoshi Ikeda, Yoshihiko Kinpara, Hiroaki Kitano
  • Publication number: 20170080970
    Abstract: An input/output device is connected, via an in-vehicle communication network, to a control device for controlling a motor provided in an electric power steering apparatus that is provided in a vehicle. The input/output device generates an excitation start instruction signal for starting excitation in the motor on the basis of an externally input excitation start instruction, transmits the generated excitation start instruction signal to the control device over the in-vehicle communication network, and receives response data relating to the excitation of the electric power steering apparatus, the response data being detected by the control device while the excitation is underway, from the control device over the in-vehicle communication network.
    Type: Application
    Filed: April 9, 2015
    Publication date: March 23, 2017
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Isao KEZOBO, Yoshihiko KINPARA, Hidetoshi IKEDA
  • Publication number: 20170015351
    Abstract: A steering control device capable of causing a steering torque to follow a target steering torque when a driver holds a steering wheel for steering, and making an adjustment so that the steering wheel returns to a neutral position at an appropriate speed, when the driver releases his or her hands from the steering wheel. A motor is controlled based on a motor steering assist torque, which is a sum of a first steering assist torque, which is proportional to an integral value of a deviation between the target steering torque and the steering torque, and a second steering assist torque, which is proportional to a motor rotational angular velocity and acting in a direction of suppressing a return speed of the steering wheel when the steering wheel returns to the neutral position.
    Type: Application
    Filed: March 19, 2015
    Publication date: January 19, 2017
    Applicant: MITSUBHISHI ELECTRIC CORPORATION
    Inventors: Masaya ENDO, Hidetoshi IKEDA, Yoshihiko KINPARA, Hiroaki KITANO
  • Patent number: 9335356
    Abstract: [Problem] For measuring the inductance of a synchronous motor, a high-speed and convenient inductance measuring device for a synchronous motor is provided. [Solution] A three-phase high-frequency rotation voltage is applied to a synchronous motor, thereby calculating the inductance from the same frequency component as that of the high-frequency voltage included in a motor current.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: May 10, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shoji Adachi, Yoshihiko Kinpara
  • Patent number: 9166519
    Abstract: A motor control device includes: a frequency instruction setting section for outputting a plurality of frequency instructions; an AC voltage instruction generation section for generating and outputting an AC voltage instruction based on each of the frequency instructions; a voltage application section for applying voltage to a motor based on the AC voltage instruction; a current detection section for detecting motor current flowing in the motor; and a type determination section for determining the type of the motor based on a transfer characteristic of the motor calculated from the motor current, the AC voltage instruction, and the frequency instruction.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: October 20, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masato Ito, Yoshihiko Kinpara
  • Patent number: 8977436
    Abstract: An electric power steering system includes steering a torque detector that detects steering torque, and a motor that provides assist torque based on the detected steering torque, wherein for the purpose of estimating, without detecting motor rotation angular information and rotation angular velocity information, the road reaction torque in which the influence of the motor inertia torque is eliminated, a value corresponding to rotation velocity of a steering shaft is calculated based on the steering torque and the assist torque, to calculate road reaction torque based on the value corresponding to the rotation velocity of the steering shaft.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: March 10, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaya Endo, Takashi Iwasaki, Masahiko Kurishige, Takayuki Kifuku, Yoshihiko Kinpara
  • Patent number: 8878482
    Abstract: A power converting apparatus includes a timing signal generator and a phase determination signal generator provided in an ON/OFF signal generating unit as well as a detected current correction unit. On the basis of timing signals ts1, . . . and phase determination signals ph1, . . . , the power converting apparatus determines detected current values and phases of the detected current values fed from a DC bus current sensor at timings set in accordance with the timing signals and corrects the detected current values idc1, . . . for the individual phases obtained at the individual timings during PWM cycles to represent values which would be obtained at reference timing t0 to thereby reduce errors caused by differences in the current detecting timings for the individual phases.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: November 4, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuya Kojima, Yoshihiko Kinpara
  • Publication number: 20140316733
    Abstract: An angle detecting apparatus is obtained. The angle detecting apparatus is capable of correcting an electrical angle frequency component of an angle signal contained angle signal. An angle detecting apparatus computes an angle signal of a rotary machine from a sine signal and a cosine signal obtained from the angle signal. Offset correction values for the sine signal and the cosine signal are computed from the angle signal. The computed offset correction value for the sine signal is added to the sine signal to correct the sine signal, and the computed offset correction value for the cosine signal is added to the cosine signal to correct the cosine signal.
    Type: Application
    Filed: December 12, 2012
    Publication date: October 23, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tatsuya Mori, Tetsuya Kojima, Yoshihiko Kinpara, Takayuki Kifuku
  • Publication number: 20140002110
    Abstract: [Problem] For measuring the inductance of a synchronous motor, a high-speed and convenient inductance measuring device for a synchronous motor is provided. [Solution] A three-phase high-frequency rotation voltage is applied to a synchronous motor, thereby calculating the inductance from the same frequency component as that of the high-frequency voltage included in a motor current.
    Type: Application
    Filed: December 6, 2010
    Publication date: January 2, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shoji Adachi, Yoshihiko Kinpara
  • Publication number: 20130285588
    Abstract: A motor control device includes: a frequency instruction setting section for outputting a plurality of frequency instructions; an AC voltage instruction generation section for generating and outputting an AC voltage instruction based on each of the frequency instructions; a voltage application section for applying voltage to a motor based on the AC voltage instruction; a current detection section for detecting motor current flowing in the motor; and a type determination section for determining the type of the motor based on a transfer characteristic of the motor calculated from the motor current, the AC voltage instruction, and the frequency instruction.
    Type: Application
    Filed: January 25, 2011
    Publication date: October 31, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masato Ito, Yoshihiko Kinpara
  • Publication number: 20130124049
    Abstract: An electric power steering system includes steering a torque detector that detects steering torque, and a motor that provides assist torque based on the detected steering torque, wherein for the purpose of estimating, without detecting motor rotation angular information and rotation angular velocity information, the road reaction torque in which the influence of the motor inertia torque is eliminated, a value corresponding to rotation velocity of a steering shaft is calculated based on the steering torque and the assist torque, to calculate road reaction torque based on the value corresponding to the rotation velocity of the steering shaft.
    Type: Application
    Filed: July 13, 2011
    Publication date: May 16, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masaya Endo, Takashi Iwasaki, Masahiko Kurishige, Takayuki Kifuku, Yoshihiko Kinpara
  • Publication number: 20120049778
    Abstract: A power converting apparatus includes a timing signal generator and a phase determination signal generator provided in an ON/OFF signal generating unit as well as a detected current correction unit. On the basis of timing signals ts1, . . . and phase determination signals ph1, . . . , the power converting apparatus determines detected current values and phases of the detected current values fed from a DC bus current sensor at timings set in accordance with the timing signals and corrects the detected current values idc1, . . . for the individual phases obtained at the individual timings during PWM cycles to represent values which would be obtained at reference timing t0 to thereby reduce errors caused by differences in the current detecting timings for the individual phases.
    Type: Application
    Filed: February 9, 2010
    Publication date: March 1, 2012
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tetsuya Kojima, Yoshihiko Kinpara
  • Patent number: 8022660
    Abstract: A control controls starting of an AC rotary machine by calculating a resistance drop component, corresponding to a resistance drop of the AC rotary machine, based on a detection current, and adjusts angular frequency of an AC output voltage based on subtracting the resistance drop component from a voltage command, and, simultaneously, adjusting amplitude of the AC output voltage so that amplitude of an AC phase current may change in conformity with a predetermined function.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: September 20, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihiko Kinpara, Masaki Kono, Kiyoshi Eguchi, Keita Hatanaka, Mitsuo Kashima, Kouichi Arisawa
  • Patent number: 7852039
    Abstract: A control apparatus is for controlling an AC rotary machine which includes a first and second stator elements and a rotor, in which the first stator element can be turned, or offset, in a circumferential direction relative to the second stator element. The control apparatus includes an actuator for adjusting a voltage induced in a stator coil due to rotation of the rotor by driving the first stator element, a magnetic flux command calculator for calculating a desired magnetic flux amplitude command based on rotating speed of the AC rotary machine, a magnetic flux estimator for estimating magnetic flux amplitude of the AC rotary machine, a speed command calculator for calculating an actuator speed command to be given to the actuator so that the estimated magnetic flux amplitude follows the magnetic flux amplitude command, and an actuator controller for controlling the actuator according to the actuator speed command.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: December 14, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihiko Kinpara, Kouki Naka
  • Patent number: 7800337
    Abstract: A control apparatus for an AC rotary machine, including first voltage command calculation means for calculating first voltage commands from current commands, an angular frequency, and constant set values of the AC rotary machine, second voltage command calculation means for calculating second voltage commands on the basis of difference currents between the current commands and current detection values, so that the difference currents may converge into zero, third voltage command calculation means for calculating third voltage commands by adding the first voltage commands and the second voltage commands, voltage application means for applying voltages to the AC rotary machine on the basis of the third voltage commands, and constant measurement means for calculating the constant set values on the basis of the second voltage commands.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: September 21, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihiko Kinpara, Takahiko Kobayashi, Keita Hatanaka
  • Patent number: 7658268
    Abstract: A control device for a rotating machine driving an elevator suppresses increases in the moving time of the elevator while securing control and stability in accordance with moving direction and load of a car of the elevator. A control device for controlling speed of the rotating machine without using a speed sensor includes a speed command signal generator for generating a rotational speed command for the rotating machine; and a speed sensor-less controller for controlling a voltage applied to the rotating machine without using a speed sensor, based on the rotational speed command from the speed command signal generator. In the control device, the speed command signal generator changes an acceleration running curve in a deceleration interval in accordance with the moving direction and the load of the car of the elevator to generate the rotational speed command.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: February 9, 2010
    Assignees: Mitsubishi Electric Corporation, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Yoshihiko Kinpara, Masahiro Fukuta
  • Publication number: 20090251083
    Abstract: A control controls starting of an AC rotary machine by calculating a resistance drop component, corresponding to a resistance drop of the AC rotary machine, based on a detection current, and adjusts angular frequency of an AC output voltage based on subtracting the resistance drop component from a voltage command, and, simultaneously, adjusting amplitude of the AC output voltage so that amplitude of an AC phase current may change in conformity with a predetermined function.
    Type: Application
    Filed: June 29, 2006
    Publication date: October 8, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiko Kinpara, Masaki Kono, Kiyoshi Eguchi, Keita Hatanaka, Mitsuo Kashima, Kouichi Arisawa
  • Patent number: 7423401
    Abstract: In an apparatus measuring constants of an induction motor, an inverter converts an inputted voltage command signal into a single-phase AC power and feeds the single-phase AC power to the induction motor, and a currert detector detects a current of the single-phase AC power fed to the induction motor. An apparatus controller generates a voltage command signal corresponding to an AC voltage as applied to the induction motor and outputs the voltage command signal to the inverter and gerates the voltage command signal and controls the inverter to feed the single-phase AC power having a frequency selected in a range equal to or higher than 0.006 Hz and equal to or lower than 1.5 Hz to the induction motor. A constant calculation controller calculates constants of the induction motor based on the voltage and current of the single-phase AC power fed to the induction motor.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: September 9, 2008
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Yoshihiko Kinpara, Takahiko Kobayashi, Masahiro Fukuta, Takumi Oonuma