新型电动静液作动器主动悬架模糊PID控制  

Fuzzy-PID Control for New Vehicle Active Suspension with Electro-Hydrostatic Actuator

作　　者：季新杰[1] 李声晋[1] 芦刚[1] 方宗德[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《汽车工程》2008年第5期437-440,共4页Automotive Engineering

基　　金：西北工业大学科技创新基金(M450211)资助

摘　　要：为采用新型电动静液作动器的主动悬架设计了一种模糊PID控制器,把悬挂质量相对于静平衡位置的位移(即动挠度)及其变化率作为模糊控制器的输入,PID控制器的3个参数作为模糊控制器的输出。不同频率激励路面的试验数据表明,采用模糊PID控制的主动悬架能适应不同频率路面状况,有效降低车体垂向加速度和悬架动挠度,从而提高了汽车的乘坐舒适性和操纵稳定性。A fuzzy-PID controller is designed for the new active suspension with electro-hydrostatic actuator （EHA）. The inputs of the fuzzy controller are the displacement of sprung mass relative to its static balance position （i. e. dynamic deflection）and its changing rate, while its outputs are proportional, integral and derivative gains of PID controller. The results of tests on the roads with excitations of different frequencies show that the active suspension with EHA using fuzzy-PID control can adapt to road conditions with excitations of different frequencies, and effectively reduce the vertical acceleration of vehicle body and the dynamic deflection of suspension, so that the ride comfort, handling and stability of vehicle are improved.

关 键 词：电动静液作动器 主动悬架 模糊PID控制 

分 类 号：U463.33[机械工程—车辆工程] TP273.4[交通运输工程—载运工具运用工程]