基于功率键合图对多轴车辆油气悬架系统模糊控制的研究  

Fuzzy Logic Control Research of Hydro-pneumatic Suspension System of Multi-axle Vehicle by Power Bond Graph Theory

作　　者：马兵[1] 武德[1] 文豪[1] 呼燕华 陈煜璇 王大会[1] 张彦[1] 

机构地区：[1]太原科技大学机械工程学院,太原030024 [2]山西潞安集团余吾煤业有限责任公司,长治046204

出　　处：《石河子大学学报（自然科学版）》2015年第2期258-264,共7页Journal of Shihezi University(Natural Science)

基　　金：山西省自然科学基金项目(2010011031-4);山西省研究生优秀创新项目(20123102)

摘　　要：针对多轴车辆主动油气悬架研究中的不足,本文基于功率键合图法与模糊PID控制算法对多轴车辆主动油气悬架系统进行了的研究分析。依据多轴车辆行驶路况的相关特性,建立了整车主动悬架结构模型,同时,建立了基于功率键合图理论的多轴车辆油气悬架系统的数学模型,并推导出了状态方程;在此基础上利用模糊PID控制理论设计了一种主动油气悬架控制器,实现了油气悬架系统的主动控制;最后利用MATLAB/Simulink编写仿真程序对其仿真分析,并与被动悬架的仿真结果作了对比,结果振动垂心加速度相比被动悬架改善了接近62%,俯仰角加速度的改善大约为60%;模拟仿真结果表明:该系统具有良好的控制效果,多轴车辆的平顺性和舒适性得到了明显的改善。本文结论可为实际生产应用奠定一定的理论基础。Aiming at the lack of research on multi-axle vehicle active hydro pneumatic suspension.An active hydro-pneumatic suspension system of multi-axle vehicle was analyzed in paper based on power bond graph method and fuzzy PID control algorithm.An active suspension structure model was established,and a mathematical model of multi-axle hydro-pneumatic suspension system was established according to the relevant characteristics of multi-axle vehicle＇s driving traffic condition.Also, the state equation was derived.An active control of hydro-pneumatic suspension system was realized on lhe basis of using fuzzy PID control theory to design an active hydro pneumatic suspension controller.MATLAB/Simulink was used in program and simulation.The simulaled result was compared with the passive suspension simulation.The data showned that vibration＇s orthoeenter acceleration and pitch angular acceleration was improved nearly 62% and 60% respectively,and the system was better in control effect,also the ride performance and comfort of multi-axle vehicle was improved obviously by comparing with the passive suspension.It provides the theoretical basis for the practical production and application.

关 键 词：多轴车辆 油气悬架系统 功率键合图 模糊控制 仿真 舒适性 

分 类 号：U463.33[机械工程—车辆工程]