Omron Automotive Electronics Co., Ltd.

Takayuki Fukuoka

Yoshiki Yamagishi

Yasutaka Shirota

Satoshi Kido

A DC electric motor control device has a motor driving circuit that is constructed by a plurality of switching elements, a controller that operates the motor driving circuit to control a normal rotation or a reverse rotation of a DC electric motor, and an abnormality determination part that determines whether an abnormality is generated while the controller controls the DC electric motor. The controller previously performs reverse rotation control of the DC electric motor for a predetermined time using the motor driving circuit when performing normal rotation control of the DC electric motor, and the controller performs the normal rotation control only when the abnormality determination part determines that the abnormality is not generated during the reverse rotation control.

DC electric motor control device

A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch element supplying a current from the battery to the drive circuit when being turned on, the switch element cutting off the current from the battery to the drive circuit when being turned off, a rotation speed detector that detects a rotation speed of the electric motor, and a controller that operates the drive circuit to control the electric motor. The controller turns on the switch element when the rotation speed of the electric motor, which is detected by the rotation speed detector, is greater than or equal to a first predetermined value during stopping of the control of the electric motor.

Motor control device

A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch element supplying a current from the battery to the drive circuit when being put into an on state, the switch element cutting off the current from the battery to the drive circuit when being put into an off state, a voltage detector that detects a voltage at the drive circuit, and a controller that operates the drive circuit to control the electric motor. The controller turns on the switch element when the voltage at the drive circuit, which is detected by the voltage detector, is greater than or equal to a first predetermined value during stopping of the control of the electric motor.

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Aichi, Japan

Takayuki Fukuoka