| 摘要 |
PURPOSE:To contrive the gain flatness and the decrease of phase delay of the yaw rate characteristic by controlling a rear wheel in accordance with not only a front wheel steered angle but also a speed of the steered angle and its acceleration. CONSTITUTION:On and off action of solenoids 12L, 12R and their electrification quantity are electronically controlled by a controller 17. The controller 17 inputs a signal from a steering angle sensor 18 detecting a steering angle theta of a steering wheel 3 and a signal from a car speed sensor 19 detecting a car speed V. The controller 17 determines an electric current (i) for whether or not it must be supplied to either the solenoid 12L or 12R, generating a fluid pressure in accordance with a rear wheel steering angle in corresponding pipe line 11L or 11R. An actuator 9 moves by a stroke of predetermined distance in a direction in accordance with a fluid pressure of the actuator, steering a rear wheel by an angle in accordance with an arithmetic result. |
