汽车悬架系统中混沌振动的自适应跟踪控制研究  

Control Chaos in Automobile Suspension System via Adaptive Tracking Control Method

作　　者：高远[1,2,3] 耿兆云[1] 范健文[2,3] 蓝会立[1] 

机构地区：[1]广西科技大学电气与信息工程学院,广西柳州545006 [2]广西科技大学鹿山学院,汽车工程系,广西柳州545006 [3]广西汽车零部件与整车技术重点实验室,广西柳州545006

出　　处：《机械设计与制造》2013年第12期198-201,共4页Machinery Design & Manufacture

基　　金：广西自然科学基金项目(2013GXNSFAA019351);广西教育厅科研项目(201202ZD068;201204LX657)

摘　　要：汽车悬架系统中的混沌振动会对车辆性能产生严重的不良影响。针对汽车悬架中的混沌控制问题,从具有不确定性时变系统参数和随机路面激励作用的汽车非线性悬架系统模型出发,提出一种具有自适应特性的反馈跟踪控制方法,并采用Lyapunov稳定理论证明了控制器的渐进稳定性。仿真结果表明:车辆在不同行驶速度和等级路面激励情况下,该控制方法不仅能有效抑制悬架的混沌振动,且有效降低悬架垂向振动加速度。研究结果为研究探索可控悬架系统的有效控制策略,提高车辆行驶平顺性提供了有益的理论方法参考。Chaos in the vehicle suspension goes against ~he ride comfort and handling stability. For controlling chaotic vibration of the suspension, the nonlinear model with parameter uncertainties and the random road sugrace is considered, and an adaptive tracking control method based on Lyapunov stability theory is presented. The total of uncertain factors in the system is estimated by adaptive algorithm Simulation results demonstrate this method can not only realize restrain chaotic vibration, reduce vertical acceleration of suspension and improve ride comfort evidently, but also has better adaptability and robustness although the vehicle has different driving cycles of diverse velocities and road levels. The researches provide a valuable theoretical reference for exploring effective control strategies of controllable suspensiong.

关 键 词：非线性悬架 混沌 自适应干扰估计 跟踪控制 

分 类 号：TH16[机械工程—机械制造及自动化] U463.33[机械工程—车辆工程]