基于模糊次优控制的空气悬架仿真研究  

Air Suspension Based on Hybrid Fuzzy-Suboptimal Control Strategy

作　　者：孙世磊[1] 詹长书[1] 陈开来[1] 狄佳福 

机构地区：[1]东北林业大学交通学院,哈尔滨150040

出　　处：《重庆理工大学学报（自然科学）》2014年第7期21-25,66,共6页Journal of Chongqing University of Technology：Natural Science

基　　金：国家博士后科学基金资助项目(2013M541329);中央高校基本科研业务费专项资金资助项目(2572014BB08)

摘　　要：针对空气弹簧的非线性特性,建立了空气弹簧关于气囊压力、有效面积、有效容积、垂向变形的弹力模型。采用多变量反馈机制,改进了次优控制理论,使之能够应用到空气悬架中。提出一种用于空气弹簧悬架的模糊控制与次优控制相结合的控制策略,并基于空气弹簧的非线性特性建立了单轮1/4车辆振动模型。同时,利用Matlab/Simulink建立了空气悬架和模糊次优控制器模型。仿真结果表明:针对非线性空气悬架所设计的控制器显著地改善了车辆平顺性与道路友好性。For non-linear air spring,air spring of elastic model is established with respect to cuff pressure,the effective area,the effective volume and vertical deformation.Suboptimal control theory was improved,so that it can be applied to air suspension.Moreover,combining control strategy of fuzzy control and sub-optimal control for air spring suspension is proposed.The model of quarter vehi-cle dynamic based on the nonlinear characteristics of the air spring is established.Meanwhile,model-ing of air suspension and fuzzy-suboptimal is established using Matlab/simulink software.Simulation results show that the designed non-linear air suspension controller significantly improves the vehicle ride comfort and road friendliness.

关 键 词：空气悬架 次优控制 模糊控制 平顺性 道路友好性 

分 类 号：U463[机械工程—车辆工程]