The invention discloses a steering control method for rear wheels of a commercial vehicle. The steering control method comprises the following steps: when a steering signal transmitted by a user is received, obtaining a current inclined angle value and a current vehicle speed value of a vehicle body; judging whether the current vehicle speed value is smaller than a safe vehicle speed threshold value or not; if the current inclined angle value is smaller than a safe inclined angle threshold value and the current vehicle speed value is lower than the safe vehicle speed threshold value, obtaining the angle signal of a steering wheel, and after calculating the steering angle value of a target rear wheel according to the obtained angle signal of the steering wheel through control algorithms of feedforward and PID, controlling an actuating mechanism to steer the rear wheels according to the steering angle value of the target rear wheel; if the current vehicle speed value is higher than or equal to the safe vehicle speed threshold value, locking the rear wheels of the commercial vehicle, so that the commercial vehicle cannot be steered. According to the control method for steering the rear wheels of the commercial vehicle, provided by the invention, when the vehicle speed is lower than the safe vehicle speed threshold value, the rear wheels are steered, so that the mobility and the flexibility of the commercial vehicle are ensured when the commercial vehicle travels at a low speed.
Steering control method and device for rear wheels of commercial vehicle
04.11.2015
Patent
Elektronische Ressource
Englisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
METHOD TO CONTROL A ROAD VEHICLE WITH REAR STEERING WHEELS
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