| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric power steering device capable of performing automatic control smoothly by suppressing disorder of a running locus even in an environment where a disturbance exists. <P>SOLUTION: An ECU includes two drive circuits 26A, 26B provided correspondingly to motor coils of two systems independent of each other and a microcomputer 27 which outputs control signals Smc_a, Smc_b of two independent systems to the respective drive circuits 26A, 26B. The microcomputer 27 includes a first control signal output part 31A which 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 motor torque corresponding to the assist force. The microcomputer further includes a second control signal output part 31B which outputs the control signal Smc_b to the drive circuit 26B of the second system by executing positional control on the basis of a steering angle command value θs* input from a superior ECU via an in-vehicle network so as to change the steering angle of the steering road wheels. <P>COPYRIGHT: (C)2012,JPO&INPIT |
