MOTOR CONTROL APPARATUS

摘要

An integrated IC provided in an SBW-ECU has plural functions such as a receiving function of receiving output signals of an encoder and a current supply function of supplying current to each phase of the motor. A microcomputer checks individually whether the signal receiving function and the current supply function are potentially abnormal and checks whether the integrated IC is abnormal based on the check results about the signal receiving function and the current supply function. For example, when it is determined that only the signal receiving function of the integrated IC is potentially abnormal, the encoder is determined to be abnormal. When it is determined that the signal receiving function and the current supply function of the integrated IC are both potentially abnormal, the integrated IC is determined to be abnormal.

主权项

1. A motor control apparatus comprising:
a motor provided as a drive power source for a control object; an encoder for outputting output signals in synchronization with rotation of the motor; a control part for rotationally driving the motor by sequentially switching over a current supply phase of the motor based on a count value of the output signals of the encoder; an integrated IC having plural functions, which include at least one of a receiving function for receiving output signals of the encoder and a power supply function for supplying a current to each phase of the motor; and an abnormality diagnosis part for checking individually whether an abnormality is present potentially with respect to at least two functions among the plural functions of the integrated IC and checking whether the integrated IC is abnormal based on check results about the at least two functions.