基于观测器的丢包网络控制系统控制器设计

针对网络控制系统的数据包丢失(丢包)问题,提出将网络控制系统中的丢包问题看成是被控对象输入矩阵的切换问题和控制器对象输入矩阵的分别切换问题,进而将网络控制系统看成是由矩阵切换决定的切换律未知的切换系统,将丢包等效为切换系统中子系统之间的切换。采用李雅普诺夫函数方法,对每个由矩阵形式决定的子系统设计了基于观测器的状态反馈控制器。利用线性矩阵不等式(linear matrix inequalities,LMI)的可行解给出了计算状态观测器和控制器的参数化方法。最后通过仿真算例验证了该方法的有效性。

Controller design based on observer to data packet dropout in networked control systems

The problems of data packet dropout in networked control systems(NCSs)Can be treated as the problem of input matrixes of the plant switching and the input matrixes of the controller matrixes switching,then NCS is modeled as a switched system whose switching law is unknown,the problem of data packet dropout is equal to the subsystems of the switched system switching.Using Lyapunov method,the state feedback controller based on observer of each subsystem decided by the matrixes is designed.Utilizing the solutions of linear matrix inequalities(LMIs),the parameterize expression method of the state observer and controller is given.Finally,an example is given to validate the method.