研究了利用自适应编码调制的无线网络控制系统的分析和设计, 自适应编码机制引入无线网络能够提高衰退信道的能量效率, 增加数据传输率. 进一步, 通过等价时延的概念来描述无线传输信道中的时变速率, 干扰和路由特性. 基于时变的网络条件给出了等价时延的上下界. 无线网络控制系统被建模为具有时变输入时延的离散系统. 通过新的时滞系统技术给出了该闭环无线网络控制系统可稳定化的充分条件. 最后, 数值算例表明了所提控制策略的有效性.
In this paper, we explore the analysis and design of wireless networked control system (WNCS) utilizing adaptive coded modulation (ACM) schemes, which can improve the energy efficiency and increase data rate over a fading channel. To capture the characteristics of varying rate, interference, and routing in wireless transmission channel, we introduce the concept of equivalent delay (ED). Based on the time-varying network condition, the analytic lower and upper bounds of EDs are given. Whereafter, WNCS is modelled as a discrete-time system with time-varying input delay. Sufficient stabilization condition of the closed-loop WNCS is derived by making use of novel techniques of time-delay system. Finally, the numerical result shows the validity of our proposed control strategies.