MOTOR CONTROLLER HAVING A POWER-SAVING CONTROL, AND A MOTOR CONTROL SYSTEM INCLUDING THE MOTOR CONTROLLER

摘要

A motor controller that is configured to switch power supply phases of the motor, to perform a limit-position abutment control by rotating the motor to a movable limit of a movable range of the rotation object to learn a reference position of the motor, perform a power-saving return control afterwards, in which a power supply to the motor is stopped, thereby returning a rotation position of the motor toward a target rotation position, and stop the rotation of the motor by simultaneously supplying power to a preset phase of the motor, when the rotation position of the motor reaches the target rotation position. In such manner, the power consumption as well as the heat generation of the motor are reduced for returning the rotation position of the motor to a preset rotation position after the abutment control of the motor.

主权项

1. A motor controller comprising:
a motor rotating a rotation object; and a control section including a microcomputer configured to switch power supply phases of the motor to rotationally drive the motor, wherein the control section is configured to
perform a limit-position abutment control by rotating the motor to a movable limit of a movable range of the rotation object to learn a reference position of the motor,perform a power-saving return control after performing the limit-position abutment control, in which a power supply to the motor is stopped, thereby returning a rotation position of the motor toward a target rotation position with a reverse rotation relative to a rotation in the limit-position abutment control, andstop the rotation of the motor by simultaneously supplying power to a preset phase of the motor, when the rotation position of the motor reaches the target rotation position after a start of the power-saving return control.