机构地区: 中国北车集团
出 处: 《大连交通大学学报》 2014年第2期44-47,共4页
摘 要: 研究两自由度干摩擦自激振动系统的解耦和主动控制.首先利用平均法计算系统的定常解,分析纯滑动形式的干摩擦自激振动特性,然后采用非线性控制的微分几何方法设计解耦规律,对解耦得到的线性子系统,应用滑模变结构控制理论设计控制器,分析控制器参数和系统参数对控制效果的影响.仿真结果表明该控制器可以有效地抑制系统的摩擦颤振. The decoupling and active control of self-excited vibration in a 2 degree of freedom dry-friction sys tem are investigated.Adopting the averaging method,the pure slip type self-excited vibration is analyzed.The decoupling law is designed by the theory of nonlinear differential geometry method,and the sliding mode variable structure control of the decoupled linear subsystem is used to stabilize the flutter.The influence of the controller and the system parameters are analyzed.The simulation result shows that the sliding mode variable structure control method is an effective way in control of the frictional flutter.
领 域: [自动化与计算机技术] [自动化与计算机技术]