Motor control device

摘要

Provided is a motor control device including a main calculation unit (101), which takes a first operation state for controlling a brushless motor (5), and a second operation state for stopping the motor control, and a sub calculation unit (102) for monitoring the main calculation unit (101) by means of a first monitoring unit (106) in the first state, for calculating a motor rotation angle in the second state, thereby enabling continuous calculation of the motor rotation angle even when the motor control is stopped, for carrying out monitoring the sub calculation unit (102) by means of second monitoring unit (201), thereby securing reliability, and for calculating the motor rotation angle in a second calculation cycle in the second operation state, the second calculation cycle being longer than a first calculation cycle in the first operation state, thereby reducing a current consumption.

主权项

1. A motor control device, comprising:
a motor rotation angle detector for outputting a motor rotation angle signal for detecting a rotation angle of a motor; a calculator for carrying out control for the motor; and a monitoring device for detecting a presence and absence of an abnormality of the calculator, wherein: the calculator has two operation states; one of the two operation states is a first operation state in which the calculator uses a first amount of current to calculate the rotation angle of the motor based on the motor rotation angle signal output from the motor rotation angle detector to control the motor based on the calculated rotation angle of the motor; and another one of the two operation states is a second operation state in which the control for the motor is stopped, and the calculator uses a second amount of current less than the first amount of current to calculate the rotation angle of the motor based on the motor rotation angle signal output from the motor rotation angle detector.