CAJ | 학술논문

采用单论车辆模型和路面输入模型为例进行理论分析,建立行驶动力学模型,利用线性二次最优控制理论进行主动悬架LQG控制器设计.以某轿车的后悬架为例,在 MATLAB/Simulink 环境下建立单轮车辆计算机仿真模型;最后将主、被动悬架的车身加速度、悬架动行程及轮胎动位移三项指标进行了对比分析.仿真结果表明,具有LQG控制器的主动悬架对车辆行驶平顺性和乘坐舒适性的改善有良好的效果.
채용단론차량모형화로면수입모형위례진행이론분석,건립행사동역학모형,이용선성이차최우공제이론진행주동현가LQG공제기설계.이모교차적후현가위례,재 MATLAB/Simulink 배경하건립단륜차량계산궤방진모형;최후장주、피동현가적차신가속도、현가동행정급륜태동위이삼항지표진행료대비분석.방진결과표명,구유LQG공제기적주동현가대차량행사평순성화승좌서괄성적개선유량호적효과.
In this paper , we make single wheel vehicle model and road input model as the example to analyze and establish the driving dynamics model , using linear quadratic optimal control theory to design the controller of active suspension LQG . And then taking the rear sus-pension of a car for an example, the model of a single wheel vehicle simulation is built in MATLAB/Simulink environment; finally vehicle acceleration of the active or passive suspension , suspension travel and tire dynamic indexes are compared . The simulation results show that the active suspension with a LQG controller has a good effect on vehi-cle ride comfort .