车辆主动悬架耗散静态输出反馈控制器的设计

Design of dissipative static output feedback controller for active suspension of vehicles

通过建立1/4车辆模型和路面输入模型,应用耗散系统理论设计车辆主动悬架严格(Q,S,R)耗散静态输出反馈控制器,进行仿真研究,将主、被动悬架的车身加速度、悬架动行程和轮胎动位移3项指标进行对比分析.仿真结果表明,使用严格耗散静态输出控制器的主动悬架可以改善车辆乘坐舒适性和行驶平顺性.

A vehicle model scaled down to 1/4 and a input model of road pavement were established based on the dissipative system theory to design a strictly （Q, S,R） dissipative static output feedback controller for vehicle active suspension. Its system simulation based on Matlab/Simulink environment was performed and three performance indexes such as body acceleration, suspension dynamic travel, and tire dynamic deflection were compared between the active and passive suspensions and analyzed. The simulation result indicated that, by using the active suspension with a strictly dissipative controller, the riding comfort performanee and smoothness of traveling movement of the vehicle were improved.