Motorantriebseinheit

Details

Veröffentlichungs-Nr.

EP2843831

Aktenzeichen

EP14183133

Anmeldetag

2. September 2014

Veröffentlichung

23. August 2017

Erteilung

23. August 2017

Rechtsraum

EP

IPC

H02P29/02H02P7/29

Abstract

A motor drive unit includes a motor drive circuit that drives a motor by controlling on/off of current, a control unit generating a drive command signal for driving the motor, a current feedback circuit with the motor and outputs a comparison output signal based on comparison between a current detection signal of a motor current and a target value signal, a latch circuit that latches a current detection result based on the drive command signal and the comparison output signal, and a gate circuit for driving the motor drive circuit based on the drive command signal and a latch output signal output from the latch circuit. The control unit detects a failure of a current feedback system including the current feedback circuit and the latch circuit according to a state of the latch output signal inputted after a time measured based on the drive command signal reaches a predetermined time.

Anmelder

Firma

KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO

Land

🇯🇵 Japan

Fachgebiete