Title:
MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2021/245974
Kind Code:
A1
Abstract:
An object of the present invention is to realize a motor control device capable of improving motor control precision by suppressing error component due to braking and so forth, and bringing an estimated motor speed closer to an actual motor speed. This motor control device includes a controller 6 that outputs a first torque instruction signal instructing torque of an electric motor 1, and a vibration control unit 500. The vibration control unit 500 has a first high-pass filter 50f into which motor speed signals of speed of the electric motor 1 are input and from which a first signal is output, a second high-pass filter 50d into which estimated motor speed signals obtained from first torque instruction signals are input and from which a second signal is output, and a low-pass filter 50g into which a motor speed deviation signal that is deviation between the first signal and the second signal is input, and low-frequency component is acquired from the motor speed deviation signal and output as a third signal.
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Inventors:
SHINOHARA NAOKI (JP)
SUZUKI KEISUKE (JP)
SUZUKI KEISUKE (JP)
Application Number:
PCT/JP2021/003174
Publication Date:
December 09, 2021
Filing Date:
January 29, 2021
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02P23/00; B60L9/18; B60L15/20; H02P27/06
Domestic Patent References:
| WO2007091319A1 | 2007-08-16 | |||
| WO2017033637A1 | 2017-03-02 |
Foreign References:
| JP2005151797A | 2005-06-09 | |||
| JP2018189930A | 2018-11-29 | |||
| JP2014128089A | 2014-07-07 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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