不确定网络控制系统保成本观测器设计

Guaranteed Cost Observer Design for Uncertain Networked Control Systems

针对具有通信约束的不确定网络控制系统,研究了其保成本观测器设计问题。通过在传感器端引入send on delta(SOD)调度策略,减少非重要信息对网络资源的占用。随后建立考虑SOD调度策略后的系统模型。利用Lyapunov稳定性理论,给出系统在输出反馈条件下保成本观测器存在的充分条件,进而利用线性矩阵不等式、正交补方法求解了保成本观测器的参数值,进一步优化了成本矩阵。最后通过仿真验证了方法的有效性。

The problem of the guaranteed cost observer design is studied referring to uncertain networked control systems with communication constrain.Through introducing the send on delta（SOD） scheduling strategy at the ends of sensor,the unimportant information occupancy to network resource is reduced and the system model is obtained.The sufficient condition for existence of the guaranteed cost observer under output feedback is given by using Lyapunov stability theory.Moreover,the parameters of the observer are determined by using LMI and orthogonal complement method,hence the cost matrix is optimized.At last,the simulation verifies the validity of the method.