MOTOR DRIVE SYSTEM AND MOTOR CONTROL DEVICE

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United States of America Patent

SERIAL NO

15005009

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Abstract

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A motor drive system includes a motor, a motor control device, and a sensor that detects torque or acceleration of the motor. The motor control device includes an estimating unit configured to estimate at least one of speed and position of the motor, and a current control unit configured to control current to be supplied to the motor based upon an estimation result by the estimating unit. The estimating unit includes first and second estimating units, and derives an estimated value based upon estimation results by the first and second estimating units. The first estimating unit estimates based upon a detection signal detected by the sensor and a high-frequency component superimposed on an output current to the motor. The second estimating unit estimates from an estimation result of induced voltage of the motor.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA YASKAWA DENKIKITAKYUSHU-SHI FUKUOKA 806-0004

International Classification(s)

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  • 2016 Application Filing Year
  • H02P Class
  • 1588 Applications Filed
  • 1280 Patents Issued To-Date
  • 80.61 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20162017201820192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
TAKASE, Yoshiyasu Fukuoka, JP 10 71

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  • 6 Citation Count
  • H02P Class
  • 11.41 % this patent is cited more than
  • 9 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges64403721424201 - 1011 - 2021 - 3031 - 4041 - 5071 - 800255075100125150175200225250275300325350375400425

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