基于目标控制器的四轮驱动汽车沙地牵引力控制系统

Four wheel drive vehicle traction control system on sandy terrain based on target controller

针对车辆在实际沙地上行驶的特点,应用将PI控制与门限控制联合起来的控制方法设计了沙地牵引力控制油门控制系统。在某沙矿场的沙地上进行了基于目标控制器的汽车直线行驶牵引力控制实车道路试验。试验结果表明:采用PI控制和门限控制建立的油门控制系统能够消除驱动轮的过度滑转,防止驱动车轮在沙地上下陷,从而减小汽车行驶的推土阻力,提高汽车在沙地上的通过性和牵引性。

According to the driving behavior of the four wheel drive vehicle on the sand terrain, an engine throttle controller for the traction control system （TCS） on the sand terrain was developed using the combination of the PI control and the threshold control. The road test of the TCS based on the target controller for the vehicle driving straightaway was performed on the sand terrain of a sandpit. The test results show that the developed throttle controller can effectively avoid the excessive spin of the driving wheels and prevent the driving wheels from sinking into the sand, so that the driving resistance of the vehicle can be reduced and the vehicle driving ability and traction performance can be improved.