俯仰力矩下带有预瞄信息的汽车主动悬架H_(2)/H_(∞)控制研究  

Research on H_(2)/H_(∞) control of automotive active suspension with preview information under pitch moment

作　　者：付大田 袁春元[1] 严军军 朱爱鑫 FU Datian;YUAN Chunyuan;YAN Junjun;ZHU Aixin(School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]江苏科技大学机械工程学院,镇江212100

出　　处：《现代制造工程》2024年第3期54-61,118,共9页Modern Manufacturing Engineering

摘　　要：主动悬架相比于被动悬架多了一个可以产生主动作用力的装置,在路面不平工况中有效调节刚度和阻尼,提高车辆底盘的减振性能和乘坐的舒适性能。结合轴距预瞄信息并借鉴线性矩阵不等式(Linear Matrix Inequality,LMI)原理,建立了俯仰力矩作用下的半车主动悬架模型,并分别设计了传统H_(2)/H_(∞)状态反馈控制器和带有预瞄信息的H_(2)/H_(∞)状态反馈控制器,对主动悬架进行多目标优化控制,在时域的层面上分别对2种控制器的性能进行仿真试验,结果表明2种控制器均能够有效优化主动悬架的性能参数,但带有预瞄信息的H_(2)/H_(∞)状态反馈控制器优化能力更加突出。Compared to passive suspension,active suspension has an additional device that can generate active force,effectively adjusting stiffness and damping in uneven road conditions,improving the shock absorption performance and riding comfort of the vehicle chassis.The wheelbase preview information is considered and the principle of Linear Matrix Inequality(LMI)is used for reference to establish the model of the half car active suspension under the action of pitching torque,and the traditional H_(2)/H_(∞) state feedback controller and the H_(2)/H_(∞) state feedback controller with preview information are designed.The multi-objective opti-mization control of the active suspension is carried out,and the performance of the two controllers is simulated in the time domain.The results indicate that both controllers can effectively optimize the performance parameters of the active suspension,but the H_(2)/H_(∞) state feedback controller considering preview information has a more prominent optimization ability.

关 键 词：主动悬架 状态反馈控制 轴距预瞄 H_(2)/H_(∞)控制 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]