Fuzzy Model and Control for Nonlinear Networked Control Systems with Delay
Weihua Fan · Control Engineering of China · 2006
To the nonlinear networked control systems (NCS)in which network-induced delay is time-vary and less than one sample time, the stability and controller design method are discussed. A fuzzy model based on IF-THEN rules is used to approximate the nonlinear in the NCS and the uncertainty of the delay is transformed to parametrical uncertainties.Then a T-S fuzzy model with uncertainties is given to approximate such nonlinear NCSs. Based on the common Lyapunov function and linear matrix inequality (LMI) ,the sufficient condition for the NCSs which is subject to the asymptotic stability is derived, and the method of the controller design is also given in terms of a group of LMIs.Finally, an example shows effectiveness of the proposed method.