车辆制动稳定性的模糊协调控制

降低车辆的横摆力矩对改善车辆制动稳定性具有重要意义。在分析车辆制动时轮胎与路面接触力学特性的基础上，推导出横摆力矩与前轴两侧车轮的加减速度差、制动轮缸压力差之间的相互关系，提出了一种基于车轮加减速度差来对制动轮缸压力进行模糊协调调节，从而提高制动稳定性的控制方法。参照国家标准，在不同条件下进行道路试验。道路测试表明，相对于各个车轮独立控制，模糊协调控制降低了车辆横摆力矩，改善了车辆的制动稳定性，是一种新的有效的控制方法。

Fuzzy coordinated control of vehicle braking stability

It is important to reduce vehicle yaw moment for improving braking stability. The relationship of yaw moment, difference between acceleration or deceleration and difference between wheel cylinder pressures of the front wheel on both sides is derived, which is based upon the analyses of mechanics characteristics between the tire and the road. A new fuzzy coordination control method are addressed, which uses difference between acceleration and deceleration to coordinate wheel cylinder pressure. The road tests under different conditions were completed according to national standards. Road test results show that the fuzzy coordinated control strategy is an effective new method which reduces the yaw moment and improves automotive braking stability, compared with the strategy that each wheel independently is controlled.