基于T-S模型的不确定NNCS鲁棒容错保性能设计

摘要

针对一类具有时变时延和丢包的不确定非线性网络化控制系统,基于T-S(Takagi-Sugeno)模糊模型,通过构造适当的Lyapunov-Krasovskii泛函,得出在执行器发生失效故障的情形下,系统基于线性矩阵不等式的渐近稳定且具有良好动态性能的时滞依赖充分条件,并给出了最优鲁棒容错保性能控制器的设计方法.由于证明中没有进行任何模型变换,并考虑了时延下界,使结果具有较少保守性.最后,仿真示例验证了本文所述方法的有效性和可行性.%In an uncertain nonlinear networked control system (NNCS) with the influence on network-induced delay and packed dropout, a robust fault-tolerant guaranteed controlled sufficient condition of the system with actuator failures, which is delay-dependent approach, is deduced by constructing an appreciate Lyapunov-Krasovskii functional based on T-S fused model, and the robust fault-tolerant guaranteed control gain can be obtained via an optimization algorithm of solving several linear matrix inequalities (LMIs). This paper considers the lower bound of the time-delay and does not make the model transformation, a less conservative result is obtained. Finally, an example is used to illustrate the effectiveness and feasibility of the proposed approach.