Title:
CONTROLLER, MOTOR CONTROL SYSTEM COMPRISING SAID CONTROLLER, AND ELECTRIC POWER-STEERING SYSTEM COMPRISING SAID MOTOR CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/111730
Kind Code:
A1
Abstract:
Provided is a means for reducing operating sound even if a high-pass filter is used in controlling a motor. This controller 100 is used in a motor control system 1000 that uses a drive circuit 200 and an inverter 300 to drive a motor M used for position control. The controller 100 comprises: a current control block 120a that receives a motor current and outputs a reference voltage; a motor control circuit 180 that outputs a signal indicating a duty cycle ratio from the reference voltage output from the current control block; a deadband compensation block 150a that calculates, on the basis of a deadband compensation value, a compensation value for a nonlinear element in a drive system comprising a deadband; and an adder 160a. The deadband compensation block outputs a duty cycle value corresponding to the deadband at a timing when the motor current zero-crosses. The adder adds the duty cycle value to the signal indicating the duty cycle ratio and outputs the same.
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Inventors:
ENDO SHUJI (JP)
NAKANE HAJIME (JP)
YOKOZUKA TAKUYA (JP)
MORISHIMA MIKIO (JP)
TATEWAKI TOKUJI (JP)
NAKANE HAJIME (JP)
YOKOZUKA TAKUYA (JP)
MORISHIMA MIKIO (JP)
TATEWAKI TOKUJI (JP)
Application Number:
PCT/JP2018/043215
Publication Date:
June 13, 2019
Filing Date:
November 22, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
NIDEC ELESYS CORP (JP)
NIDEC ELESYS CORP (JP)
International Classes:
H02P27/06; G05B11/36
Foreign References:
| JP2009165279A | 2009-07-23 | |||
| JP2003284398A | 2003-10-03 | |||
| JP2010252492A | 2010-11-04 |
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