| 摘要 |
PURPOSE:To cope with a sensor noise, and reduce or otherwise the operation frequency of a steering angle adjustment actuator by generating a steering angle adjustment instruction value for a vehicle on the basis of a steering wheel angle or the like, and causing the instruction value to have the predetermined width of hysteresis. CONSTITUTION:A direct current servo motor 2 as a steering angle adjustment actuator in a rear wheel steering mechanism, rotates in both normal and reverse directions, according to an electrical instruction signal from an electrical control device 3, thereby adjusting a vehicle steering angle. In this case, at least a steering wheel angle detected with a front wheel steering angle sensor 15 is inputted to the electrical control device 3. A microcomputer 19 adjusts the vehicle steering angle on the basis of an inputted steering angle, and generates an instruction value for the steering angle adjustment actuator 2. Also, the microcomputer 19 causes the generated instruction value to have the predetermined width of hysteresis, and outputs an instruction value to the steering angle adjustment actuator 2 via a drive circuit 24. |
