Dynamic output feedback control for systems subject to actuator saturation via event-triggered scheme
Dynamic output feedback control for systems subject to actuator saturation via event-triggered scheme
复制标题
通过事件触发方案对执行器饱和的系统进行动态输出反馈控制
DOI：
10.1002/asjc.1662
复制
发表时间：
2018
影响因子：
2.4
通讯作者：
Wang Yijing
中科院分区：
文献类型：
--
作者：
Li Hongchao;Zuo Zhiqiang;Wang Yijing
研究了具有执行器饱和的线性系统的事件触发动态输出反馈控制问题。事件触发方案仅在违反事件触发条件时才发送相应的信号。利用其节省通信资源的优点，设计了动态输出反馈控制器。通过引入与事件触发条件下的指数项对应的Lyapunov函数的指数项，建立了保证闭环系统稳定的判据。给出了控制器系数矩阵的显式设计。此外，还计算了事件间时间的下界，以避免Zeno行为。然后提出了一种优化算法，以最大化对吸引域的估计。最后，给出了一个数值例子来说明我们方法的有效性，并说明了吸引域的大小和通信资源节省之间的权衡。
In this paper, the event‐triggered dynamic output feedback control problem for linear systems with actuator saturation is investigated. Event‐triggered scheme only transmits the corresponding signal when the event‐triggered condition is violated. Due to its advantage of saving communication resources, it is utilized to design the dynamic output feedback controller. A criterion is established to guarantee the stability of the closed‐loop system by introducing an exponential term for the Lyapunov function, which corresponds to the exponential term in the event‐triggered condition. The explicit design of the coefficient matrices of the controller is presented. Furthermore, a lower bound of the inter‐event time is calculated to avoid Zeno behavior. An optimization algorithm is then formulated to maximize the estimation of the domain of attraction. Finally, a numerical example is given to illustrate the effectiveness of our methods and to show the trade‐off between the size of the domain of attraction and communication resources saving.