摘要
继《基于工程轮式车辆模型的悬架系统研究(一)》对工程轮式车辆模型的悬架系统进行了建模之后,首先求解LMI的输出反馈控制器,并提出主动悬架的干扰抑制指标及评价函数,进而用MATLAB进行仿真。经过对仿真结果分析可知,主动悬架系统较被动悬架系统的工况有很大的改善,车身的质心加速度、俯仰角加速度以及前后悬架的动行程都有较大幅度的降低,减震效果明显,车辆的行驶平顺性得到了改善。
After setting up the model of the suspension system of engineering vehicle in the first paper,an output feedback controller based on linear matrix inequality is figured out firstly.This paper puts forward the index of disturbance depressing and criterion function of the active suspension,realizes the simulation based on MATLAB.It analyzes the results of the simulation,shows that the working conditions of the active suspension system have been greatly improved comparing with the passive suspension system.This greatly decreases the acceleration of bodywork,acceleration of angle of depression and elevation,the movements of the front-back suspension,improves running comfort of the engineering vehicle.
