基于模糊技术的汽车ESP系统综合反馈控制

对汽车ESP(Electronic Stability Program)系统控制方法进行了分析,提出了以模糊控制技术为核心的横摆角速度和质心侧偏角综合反馈控制方法.考虑了轮胎的非线性特性对汽车转向特性与行驶稳定性的重要影响,考虑非线性轮胎模型(魔术公式),建立了二自由度四轮汽车模型及汽车参考模型.运用模糊控制原理,设计了模糊控制器,并基于Simulink进行了控制仿真.仿真结果表明:这种控制方法可以很好地控制汽车的横摆角速度和质心侧偏角,提高汽车的侧向稳定性.

Synthesized Feedback Control of the ESP system Based on Fuzzy technology

Based on the fuzzy control technology,the feedback control method of synthesized yaw rate and side slip angle is presented for the ESP system.The influence of nonlinear characteristics of tires on cornering characteristics and driving stability of vehicle is considered.The nonlinear tire model(Magic Formula) is adopted,and the four-wheel vehicle model with two degrees of freedom and a vehicle reference model are set up on this basis.Then the fuzzy controller of yaw rate and the fuzzy controller of side slip angle are designed and a simulation model generated by Simulink software is used.Simulation results show that the lateral stability of vehicle can be enhanced by controlling yaw rate and side slip angle with the synthesized feedback control method.