基于Carsim的半主动悬架建模与仿真技术  

Modeling and simulation of semi-active suspension based on Carsim

作　　者：许吉禅[1] 牛礼民[1] 刘超[1] 徐永兴[1] 

机构地区：[1]安徽工业大学机械工程学院,安徽马鞍山243002

出　　处：《机电工程》2013年第5期536-540,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51275002);安徽工业大学研究生创新研究基金资助项目(2011025)

摘　　要：针对目前半主动悬架系统结构和控制策略上存在的差异,为了更好地研究其合理性,提出了一种基于整车系统的半主动悬架建模与仿真技术。依据节流口可调式减振器理论分析的结果,利用Matlab/Simulink软件构建了节流口可调式减振器模型,并结合Carsim软件中的整车多体动力学模型,联合开发出了阻尼可调式半主动悬架的车辆模型。在Simulink软件中搭建出了控制器模型,通过采用确定性和不确定性相结合的控制策略,实现了对整车悬架阻尼的有效调节。通过仿真分析并将其与被动悬架系统进行了对比,研究结果验证了所开发模型的正确性以及控制策略的实用性,能够用于很好地改善车辆悬架的性能。Aiming at the difference of the semi-active suspension system on the structure and control strategy at present,in order to better study its rationality,a semi-active suspension system based on the whole vehicle modeling and simulation technology was proposed.According to the result of theoretical analysis of the tunable throttle damper,a tunable throttle damper model was built using the Matlab/Simulink,and combined with the vehicle multi-body dynamics model in the software Carsim,then a vehicle model with damping adjustable semi-active suspension was developed.A controller model was built in Simulink with certainty and uncertainty combined control strategy,and effective adjustable of the vehicle suspension damping was achieved.Through simulation analysis of the model and compared with the passive suspension system,the results validate the correctness of the model and the practicality of the control strategy,which can improve the performance of the vehicle suspension.

关 键 词：行驶平顺性 CARSIM 阻尼可调 半主动悬架 建模 仿真 

分 类 号：U461.4[机械工程—车辆工程] U467.13[交通运输工程—载运工具运用工程]