| 摘要 |
<p>An ECU includes two drive circuits (26A, 26B) provided corresponding to a motor coils of two systems independent of each other, and a microcomputer (27) that outputs control signals (Smc_a, Smc_ b) of two independent systems to the drive circuits (26A, 26B). The microcomputer (27) includes a first control signal output portion (31 A) that outputs the control signal (Smc_a) to the drive circuit (26A) of the first system by executing an electric current control so as to generate a motor torque that corresponds to the assist force. The microcomputer (27) further includes a second control signal output portion (3 IB) that outputs the control signal (Smc_ b) to the drive circuit (26B) of the second system by executing a position control on the basis of a steering angle command value (?s*) that is input from a superior ECU via an in- vehicle network so as to change the steering angle of the steering road wheels.</p> |
