Event-triggered communication and H∞H∞ control co-design for networked control systems
Event-triggered communication and H∞H∞ control co-design for networked control systems
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DOI：
10.1016/j.automatica.2013.01.038
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发表时间：
2013-05
期刊：
影响因子：
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通讯作者：
Chen Peng;T. Yang
中科院分区：
文献类型：
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作者：
Chen Peng;T. Yang
针对具有通信时延和数据包丢失的网络控制系统，研究了一种事件触发的通信方案和H∞控制协同设计方法。首先，提出了一种基于事件触发的网络控制系统通信方案和采样状态误差相关模型。在该方案和模型中，（a）传感器以周期性方式采样;（B）将触发条件应用于采样信号以确定信号是否被传输到控制器;以及（c）将具有网络状态反馈控制器的闭环系统建模为时滞系统。其次，通过构造一个新的Lyapunov-Krasovskii泛函，得到了不完全通信下系统渐近稳定的三个定理。第三，提出了一种新的触发条件和控制器反馈增益的算法，以满足指定的性能。该设计算法基于信号传递的两个允许极限。这些限制分别是：最大允许的通信延迟界限和最大允许的连续数据包丢失次数。最后，通过两个算例验证了所提出的协同设计方法。
This paper studies an event-triggered communication scheme and an H∞control co-design method for networked control systems (NCSs) with communication delay and packet loss. First, an event-triggered communication scheme and a sampled-state-error dependent model for NCSs are presented. In this scheme and model, (a) the sensor takes samples in a periodic manner; (b) a triggering condition is applied to the sampled signal to determine whether a signal is transmitted to the controller or not; and (c) the closed-loop system with a networked state feedback controller is modeled as a time-delay system. Secondly, by constructing a novel Lyapunov–Krasovskii functional, three theorems for the system asymptotical stability subject to imperfect communications are derived. Thirdly, a new algorithm is developed for the triggering condition and the controller feedback gain to meet the specified performance. This design algorithm is based on the two permissible limits on the signal transfer. These limits are: the maximum allowable communication delay bound and the maximum allowable number of successive packet losses, respectively. Finally, the proposed co-design method is demonstrated by two numerical examples.