非均匀传输非线性NCS广义观测器设计方法

Generalized Observer Design Method of Non-uniform Transmission Nonlinear NCS

研究了一类具有执行器时变故障的非均匀传输非线性NCS广义观测器的设计方法。考虑状态并非完全可测,基于T-S模糊模型,建立非线性增广误差系统,借助Lyapunov稳定性理论,证明增广误差系统的稳定性,推证出使其具有鲁棒性能的广义观测器的设计方法。最后,以四容水箱为算例验证了结果的合理性与有效性。

Aimed at the nonlinear Networked Control System(NCS)with time-varying fault in its actuator,this paper studies generalized observer design method.Considering that the state is not completely measurable,based on the T-S fuzzy model and establishing a nonlinear augmentation error system,the stability of the augmented error system is proved by means of Lyapunov stability theory,meanwhile the design method of generalized observer with robust performance is deduced.Finally,through four-tank example,the feasibility and effectiveness of the proposed method is verified.