四轮驱动汽车沙地牵引力控制方法仿真

建立了四轮驱动汽车驱动动力学模型,应用PI控制方法设计了油门控制系统。应用模糊控制方法建立了油门的模糊PI控制系统,给出了参数查询表。对室内沙槽的牵引力控制进行了模拟研究。结果表明:采用PI控制、模糊控制和模糊PI控制建立的油门控制系统可将驱动轮滑转率控制在最佳值附近,并能消除驱动轮过度滑转现象。

Simulation of four wheel drive vehicle traction control on sandy terrain

A simplified dynamic model on four wheel drive vehicle was established. The PI control and fuzzy control were used to design engine fuzzy PI throttle controller and lookup tables were given.A simulation of four wheel drive vehicle traction control on sand pool was made. The results show that the engine throttle controller established by the above-mentioned control methods can avoid excessive spin of driving wheel and keep the slip rate between tire and sand in optimum state with good traction performance.