This paper tackles the observer-based finite-time $H_{\infty }$ control problem for networked nonlinear semi-Markovian jump systems (SMJSs) with actuator fault, parameter uncertainties and partly unknown transition rates via an improved dynamic event-triggered scheme (DETS). In comparison with traditional dynamic event-triggered scheme, the observer-based improved dynamic event-triggered scheme which is not restricted by real system states and could save more network resources is firstly proposed in this paper. Then, a more general actuator fault model is considered and the reliable observer-based state feedback controller is designed. Sufficient conditions are proposed to guarantee the closed-loop system is stochastically finite-time bounded with a prescribed $H_{\infty }$ disturbance attenuation level. Lastly, two simulation examples are given to affirm the validity of the results obtained in this paper.

本文解决了基于观察者的有限时间 $H_{\infty }$具有改进的动态事件触发方案（DETS）的具有执行器故障，参数不确定性和部分未知转换率的网络非线性半马氏跳跃系统（SMJS）的控制问题。与传统的动态事件触发方案相比，本文首先提出了一种基于观察者的改进的动态事件触发方案，该方案不受实际系统状态的限制，可以节省更多的网络资源。然后，考虑一个更通用的执行器故障模型，并设计了可靠的基于观察者的状态反馈控制器。提出了充分的条件以保证闭环系统随机地有一个规定的时间限制$H_{\infty }$干扰衰减水平。最后，给出了两个仿真例子，以验证本文结果的有效性。