基于Speedgoat的半主动悬架模糊PID控制研究

Research on Fuzzy PID Control of Semi-active Suspension Based on Speedgoat

作为半主动悬架最为核心的运行组件,磁流变液阻尼器的阻力性能可结合外界电流变化连续控制。对于该阻尼器为半主动悬架的控制,本文搭建了汽车半主动悬架系统仿真模型,给出了一类以Speedgoat为基础的半主动悬架模糊PID控制器,并通过模糊推理求解PID参数的调整系数,运行了基于Matlab/Simulink的模糊PID控制器的联合半实物仿真,利用Speedgoat在不同路面等级、不同速度下进行了仿真试验。试验表明:设计的基于Speedgoat的半主动悬架模糊PID控制器比起经典PID控制器有更优良的控制性能,从而提高了车辆行驶平顺性和乘坐舒适性。

As the core operating component of the semi-active suspension,the resistance performance of the magnetorheological fluid damper can be continuously controlled in combination with external current changes.For the control of the damper as a semi-active suspension,a simulation model of the vehicle semi-active suspension system is built in this paper,a class of fuzzy PID controllers for the semi-active suspension based on Speedgoat is given,the adjustment coefficient of PID parameters through fuzzy reasoning are solved by fuzzy reasoning,the hardware-in-the-loop simulation of fuzzy PID controller based on Matlab/Simulink was carried out with Speedgoat under different road grades and different speeds.The experimental results show that the designed fuzzy PID controller for semi-active suspension based on Speedgoat has better control performance than the classic PID controller,thereby improving the traveling comfort and riding comfort of the vehicle.