模糊积分控制在汽车防抱制动系统的应用

Application of Fuzzy Integral Control in Automobile Anti-lock Braking System

为提高汽车防抱死制动系统的性能,分析了系统的结构及工作原理,并针对其控制系统的各部分进行了数学建模。利用具有自检功能的模糊积分控制器对整个控制系统进行控制仿真,以检验控制器的性能。以轿车前轮为测试对象,在湿沥青路面分别以25 km/h和60 km/h进行此控制方法的模拟测试,得出不同情况下的车速和车轮线速度曲线、湿滑率变化曲线、制动时间和制动距离等数据,数据显示采用模糊积分控制下的汽车防抱制动系统工作情况稳定,控制效果令人满意。

In order to improve the performance of the automobile anti-lock braking system,the structure and working principle of the system were analyzed,and the mathematical modeling was carried out for each part of the control system.A fuzzy integral controller with self-checking function was used to control the entire control system to test the performance of the controller.At the same time,taking the front wheel of the car as the test object,the simulation test of this control method was executed at 25 km/h and 60 km/h respectively on the wet asphalt pavement,the vehicle speed and wheel linear speed curve,wet slip rate curve,braking time and braking distance under different conditions were obtained.The test results show that the automobile anti-lock braking system under fuzzy integral control works stably and the control effect is satisfactory.