基于H∞控制的车辆座椅主动悬架系统

作者：曹 君1，刘少军1，朱 浩2，黄运明1 日期：2007-04-10/span> 浏览：3541 查看PDF文档

                                               基于H∞控制的车辆座椅主动悬架系统
                                                    曹 君1，刘少军1，朱 浩2，黄运明1
（1.中南大学 机电工程学院，湖南 长沙 410083；2.湖南大学 机械汽车学院，湖南 长沙 410082）

摘 要：建立了四自由度的“车—椅—人”悬架系统的力学和数学模型，运用H∞鲁棒控制理论设计了车辆座椅主动悬架系统的鲁棒控制器。并且用MATLAB软件包及RobustControlToolbox对座椅悬架系统进行了仿真分析。仿真结果表明：鲁棒控制策略能很好地抑制座椅主动悬架系统的垂直振动加速度，其减振幅度在共振频率附近能达到50~60%，大大提高了乘坐舒适性。并且，该系统能够承受一定的模型参数不确定性，具有良好的鲁棒稳定性。
关键词：座椅主动悬架；H∞鲁棒控制；MATLAB；仿真

                               Vehicle seat active suspension system based on H∞ control
                              CAO Jun1, LIU Shaojun1, ZHU Hao2, HUANG Yunming1
(1.College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China;2.College of Mechanical and Automotive Engineering, Hunan University, Changsha 410082, China)

Abstract: The mechanics model and mathematics model of vehicle seat system with 4feedom of motion were built. A H∞ controller for the vehicle seat active suspension system was developed. MATLAB and Robust Control Toolbox were used for the simulation analyse of the vehicle seat system.The result of the simulation investigations shows that the vehicle seat active suspension system with H∞ controller can markedly reduce the vertical vibration acceleration of the seat by 50~60% and effectively improve the comfort of driver. It is also pointed out the designed controller is effective in the system robustness against the fluctuation of parameter of system.
Key words: active vehicle seat suspension; H∞ robust control; MATLAB; simulation

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