网络化控制系统随机容错控制

Stochastic Fault-Tolerant Control of Networked Control Systems

  • 摘要: 考虑控制器及执行器失效的随机性,通过引入具有独立Bernoulli分布随机序列开关矩阵,建立了网络化控制系统随机模型,并研究了该模型存在传感器随机失效、控制器随机失效以及二者同时存在随机失效的随机容错控制问题。利用Lyapunov稳定性理论,结合线性矩阵不等式技术,得到了网络控制系统均方指数稳定性判据,并基于该判据设计了网络化控制系统随机容错控制器,该控制器包含了一般反馈控制以及容错控制的结果。仿真例子表明,该设计方法是有效的。

     

    Abstract: Considering the random failures of controller and actuator, by introducing a switching matrix descriped by independent Bernoulli random sequence, a stochastic networked control model is established. And the problem of random fault-tolerant control with the existence of sensor failure and controller failure for this constructed model is investigated. Combined with linear matrix inequality technology and Lyapunov stability theory, exponential stability criteria in mean square are obtained. Based on the obtained criteria, random fault-tolerant controllers are designed. The numerical example of a controller with feedback control and fault-tolerant control is given. Simulation example shows that the design method is valid.

     

/

返回文章
返回