Switched Fuzzy Control for Nonlinear Wireless Networked Control Systems

Wireless networked control systems solve the problems in some special conditions without cables. How to decrease the impact of random delay in wireless network on system performance from the viewpoint of control becomes one of the difficult and hot research points of the wireless network control systems in recent years. Considering a class of wireless networked control systems with a nonlinear controlled object and combined with T-S fuzzy control theory and switched control system theory,a switched fuzzy control scheme was proposed. Firstly,based on T-S fuzzy model,the object was linearized,an optimal state feedback fuzzy controller was designed and solved under different time delays. Then network delay was used as switching law,and the closed loop networked control system can be converted into a switched fuzzy control model; the approach and control of the entire nonlinear system is established by the switched fuzzy control. Finally,a simulation example was given to demonstrate the effectiveness of the proposed method.