| 摘要 |
PURPOSE:To obtain steering stability by preventing the steering angle ratio from being quickly changed after the car speed is increased in a rear wheel steering control device controlling the ratio of the rear wheel steering angle against the front wheel steering angle in response to the car speed. CONSTITUTION:A car speed sensor 34 is connected to a frequency/voltage converting circuit 43 via a waveform shaping circuit 42 waveform-shaping a pickup signal to a rectangular wave signal. This circuit 43 converts the rectangular wave signal fed from the circuit 42 into an analog voltage signal and outputs it. An A/D converting circuit 44 is connected between the circuit 43 and a microcomputer 37, and the output converted into a digital signal by the circuit 44 is fed to the computer 37. The microcomputer 37 has a dedicated memory 37a storing parameters determining the steering angle characteristic ratio against the car speed, and the target steering angle ratio is set by this memory 37a. |
