Title:
MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JP2018170896
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor controller capable of more promptly detecting a failure.SOLUTION: When steering speed ω is a steering speed threshold ω0 or less (NO in a step S2), an ECU determines that a motor rotates at low speed (a step S4). When a current command value Ia* is larger than a current command value threshold Ia0*, an actual current value I is smaller than an actual current value threshold I0, and the motor rotates at low speed (YES in a step S5), the ECU adds failure detection count CNT (a step S6). After that, when the failure detection count CNT is a failure detection count threshold Th or more (YES in a step S7), the ECU detects failures of a drive circuit and a current detection circuit (a step S8).SELECTED DRAWING: Figure 3
Inventors:
OTA MASATO
Application Number:
JP2017067621A
Publication Date:
November 01, 2018
Filing Date:
March 30, 2017
Export Citation:
Assignee:
JTEKT CORP
International Classes:
H02P7/29; B62D5/04; B62D6/00
Domestic Patent References:
| JPH02290778A | 1990-11-30 | |||
| JPH1029555A | 1998-02-03 | |||
| JP2015104955A | 2015-06-08 | |||
| JPH08310416A | 1996-11-26 |
Foreign References:
| US20150362556A1 | 2015-12-17 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda