Li Chengchao, Zhao Xudong, Wu Chunyu, Liu Le, Zhao Ning
Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education, Dalian University of Technology, Dalian, Liaoning, 116024, China.
Engineering and Technology institute Groningen, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
ISA Trans. 2023 Sep;140:97-108. doi: 10.1016/j.isatra.2023.06.001. Epub 2023 Jun 7.
This paper proposes a co-design method of dynamic output feedback control law and periodic event-triggered control (PETC) strategy to tolerate a maximum allowable number of successive packet dropouts (MANSDs) in networked control systems (NCSs). For the purpose of striking a balance between saving limited communication resources and reducing complexity of the transmission implementation, we present the periodic event-triggering mechanism (PETM), in which the triggering conditions only needs to be monitored at each event-verifying instant. In NCSs, packets often suffer from some interference in network transmission, such as packet losses. For packet dropouts, we introduce a dropout variable and model the whole closed-loop systems as a hybrid system. Furthermore, some stability conditions for co-design are given by a novel Lyapunov function and stability theorems of hybrid systems, and the explicit designs parameters of controller and triggering conditions are presented to ensure L stability. Finally, two illustrated examples are given to show the effectiveness of the proposed design methods.
本文提出了一种动态输出反馈控制律与周期性事件触发控制（PETC）策略的协同设计方法，以容忍网络控制系统（NCS）中最大允许数量的连续数据包丢失（MANSD）。为了在节省有限通信资源和降低传输实现复杂度之间取得平衡，我们提出了周期性事件触发机制（PETM），其中触发条件仅需在每个事件验证时刻进行监测。在网络控制系统中，数据包在网络传输过程中经常会受到一些干扰，如数据包丢失。对于数据包丢失问题，我们引入了一个丢包变量，并将整个闭环系统建模为一个混合系统。此外，通过一个新颖的李雅普诺夫函数和混合系统的稳定性定理给出了一些协同设计的稳定性条件，并给出了控制器和触发条件的明确设计参数以确保L稳定性。最后，给出了两个示例来说明所提出设计方法的有效性。
