| 摘要 |
A vehicle rear wheel steered angle controller comprises rear wheel drive mechanisms (5L, 5R) for changing the rear wheel steered angles, a front wheel steered angle sensor (9) for detecting the front wheel steered angle (.delta.f), vehicle speed sensors (10L, 10R) for sensing the vehicle speed (V), feed-forward rear wheel steered angle control target value setting means (21) for setting a feed-forward control target value (.delta.r, FF) according to the front wheel steered angle, the steering yaw-rate transmission characteristic (G.gamma.0) of when rear wheel steered angle control is not carried out, and a preset ideal steering yaw-rate transmission characteristic (Gideal), and a controlling unit (11) for controlling the rear wheel drive mechanisms according to the feed-forward rear wheel steered angle control target value. The vehicle rear wheel steered angle controller is characterized in that the steady state characteristic of the ideal steering yaw-rate transmission characteristic is made equal to the steering yaw-rate transmission characteristic of when the rear wheel steered angle control is not carried out.
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