| 摘要 |
Provided is a motor control system that can suppress p roduction costs and suppress the occurrence of unexpected e xcessive torque, and continues system operation as much as possible even when the diagnosis results of a monitoring de vice are abnormal. A computation device (3) computes a volt age command value indicating the voltage to impose on a moto r (2), and, on the basis of the voltage command value, gener ates a control signal (S pwm ) that controls a drive device (5). When the diagnosis results (R d ) of the monitoring device (6) are normal, the computation device (3) computes the vol tage command value in a manner so that the absolute value of the detection value of current flowing to the motor (2) is no greater than a second threshold, and when the diagnosis r esults (R d ) of the monitoring device (6) are abnormal, the c omputation device (3) computes the voltage command value in a manner so that the absolute value of the detection value of current flowing to the motor (2) is no greater than a thi rd threshold that is smaller than the second threshold. |
