| Computer simulation of active suspension based on the full-vehicle model |
| |
| 作者姓名： | 李军 CHEN Shanguo |
| |
| 作者单位： | [1]CollegeofMechanicalEngineering,ChongqingUniversity,Chongqing400044,P.R.China [2]CollegeofMechanicalEngineering,ChongqingTechnologyandBusinessUniversity,Chongqing400033,P.R.China |
| |
| 摘 要： | The current method to solve the problem of active suspension control for a vehicle is often dealt with a quarter-car or half-car model.But it is not enough to use this kind of model for practical applications.In this paper,based on considering the influence of factors such as,seat and passengers a MDOF(multi-degree-of-freedom)model describing the vehicle motion is set up.The MODF model,which is 8DOF of four independent suspensions and four wheel tracks,is more applicable by comparison of its analysis result with some conventional vehicle models.Therefore,it is more suitable to use the 8DOF full-car model than a conventional 4DOF half-car model in the active control design for car vibration.Based on the derived 8DOF odel,a controller is designed by using LQ(linear quadratic)control theory,and the appropriate control scheme is selected by testing various performance indexes.Computer simulation 8is carried out for a passenger car running on a road with step disturbance and random road disturbance expressed by Power Spectral Density(PSD).Vibrations corresponding to ride comfort are derived under the foregoing road disturbances.The response results for uncontrolled and controlled system are compared.The response of vehicle vibration is greatly suppressed and quickly damped.which testifies the effect of the active suspenson.The results achieved for various controllers are compared to invesigate the influence of different control schemes on the control effect.
|
| 关 键 词： | 汽车 主动悬挂 整车模型 计算机仿真 线性二次曲线控制 功率谱密度 |
Computer simulation of active suspension based on the full-vehicle model |
| |
| LI Jun,CHEN Shanguo College of Mechanical Engineering,Chongqing University,Chongqing,P.R. China College of Mechanical Engineering,Chongqing Technology and Business University,Chongqing,P.R. China.Computer simulation of active suspension based on the full-vehicle model[J].Journal of Chongqing University,2002,1(2):24-27. |
| |
| Authors: | LI Jun CHEN Shanguo College of Mechanical Engineering Chongqing University Chongqing PR China College of Mechanical Engineering Chongqing Technology and Business University Chongqing PR China |
| |
| Institution: | LI Jun1,2,CHEN Shanguo2 1College of Mechanical Engineering,Chongqing University,Chongqing 400044,P.R. China 2College of Mechanical Engineering,Chongqing Technology and Business University,Chongqing 400033,P.R. China |
| |
| Abstract: | Abstract: The current method to solve the problem of active suspension control for a vehicle is often dealt with a quarter-car or half-car model. But it is not enough to use this kind of model for practical applications. In this paper, based on considering the influence of factors such as, seat and passengers, a MDOF(multi-degree-of-freedom) model describing the vehicle motion is set up. The MODF model, which is 8DOF of four independent suspensions and four wheel tracks, is more applicable by comparison of its analysis result with some conventional vehicle models. Therefore, it is more suitable to use the 8DOF full-car model than a conventional 4DOF half-car model in the active control design for car vibration. Based on the derived 8DOF model, a controller is designed by using LQ (linear quadratic ) control theory, and the appropriate control scheme is selected by testing various performance indexes. Computer simulation is carried out for a passenger car running on a road with step disturbance and random road disturbance expressed by Power Spectral Density (PSD). Vibrations corresponding to ride comfort are derived under the foregoing road disturbances. The response results for uncontrolled and controlled system are compared. The response of vehicle vibration is greatly suppressed and quickly damped, which testifies the effect of the active suspension. The results achieved for various controllers are compared to investigate the influence of different control schemes on the control effect. |
| |
| Keywords: | Key Word: active suspension LQ control 8DOF model |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《重庆大学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《重庆大学学报(英文版)》下载免费的PDF全文 |
|
