基于分数阶参考模型的车辆悬架自适应控制  

Adaptive control of vehicle suspension using fractional order reference models

作　　者：陈宁[1] 陈南[2] 王乃洲[1] 台永鹏[1] 

机构地区：[1]南京林业大学机械电子工程学院,江苏南京210037 [2]东南大学机械工程学院,江苏南京210098

出　　处：《南京林业大学学报（自然科学版）》2009年第3期116-120,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：南京林业大学人才基金资助项目(136040007);江苏省高校自然科学基金资助项目(163040037)

摘　　要：基于分数阶微积分理论,提出一种以分数阶控制对象为参考模型的自适应控制方法,并基于李雅普诺夫稳定性理论,得到自适应控制律。以车辆主动悬架为研究模型,以分数阶"天棚"阻尼控制悬架为参考模型,利用Oustau lop分数阶仿真算法,在SIMULINK中对悬架模型自适应控制进行仿真。结果表明:自适应控制器不仅可明显降低车身加速度,提高平顺性,对模型参数的不确定性也具有良好的鲁棒性。According to the fractional calculus theory, a model-reference adaptive control using fractional order reference models was presented. The adjustment rules of adaptive control were obtained based on the Lyapunov stability theory. An active suspension with the fractional order skyhook damper was used as the reference model. A dynamics model of the quarter car with adaptive control suspension was simulated in SIMULINK using the Oustaulop＇s simulation algorithm for fractional order system. The simulation results showed that the new Model-reference adaptive controller could improve the characteristics of vehicle in ride and handling. It had a good robustness against model uncertainties as well.

关 键 词：车辆主动悬架 分数阶微积分 分数阶参考模型 自适应控制 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] U461.4[自动化与计算机技术—控制科学与工程]