车辆座椅悬架自适应模糊PID控制及仿真  

Research on Adaptive Fuzzy-PID Control and Simulation of Vehicle Seat Suspension

作　　者：陈学文[1] 张衍成[1] 张玉蛟 杨威勇[1] 邵鹏生 

机构地区：[1]辽宁工业大学汽车与交通工程学院,锦州121001 [2]丹东市技师学院,丹东118000

出　　处：《机械科学与技术》2014年第5期776-780,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：辽宁省教育厅优秀人才项目(LJQ2012058)资助

摘　　要：为提高车辆座椅悬架减振性能,建立了简化的三自由度车辆座椅悬架模型,结合模糊控制与PID控制理论提出了座椅悬架自适应模糊PID控制方法。该方法中以座椅垂直振动速度的误差为控制参量设计了PID控制器,将座椅垂直振动速度误差及误差变化率作为模糊控制器的输入变量,利用模糊控制规则对PID控制器参数进行在线自调整。以C级路面白噪声随机信号为输入,利用MATLAB/Simulink对自适应模糊PID控制器进行了仿真。结果表明:相对于不加控制和PID控制的座椅悬架系统,自适应模糊PID控制方法可以明显改善座椅质心处的垂直振动加速度。In order to improve the damping performance of vehicle seat suspension,a three degree-of-freedom seat suspension model was established and an adaptive fuzzy proportion-integration-differentiation（ PID） control method integrating the Fuzzy and PID control theories was presented. Selecting the seat vertical vibration velocity as the input variable,a PID controller was designed and its parameters were modified by the fuzzy controller with qualities of parameter self-regulating function,which used the velocity and acceleration of seat vertical vibration as the input sources. By using MATLAB / Simulink,the adaptive fuzzy-PID controller was validated under the input of the white noise stochastic road surface of C-grade. The simulation results show that the adaptive fuzzy-PID control method can effectively suppress the seat suspension＇s vibration and obviously reduce the acceleration of seat vertical vibration, compared with the control modes of seat passive suspension and active suspension only with the conventional PID controller.

关 键 词：座椅悬架 自适应模糊PID控制 设计 白噪声 仿真 

分 类 号：U461.4[机械工程—车辆工程]