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Analysis and Design of Wireless Networked Control System Utilizing Adaptive Coded Modulation

โœ Scribed by Li YANG; Xin-Ping GUAN; Cheng-Nian LONG; Xiao-Yuan LUO

Publisher
Elsevier
Year
2009
Weight
399 KB
Volume
35
Category
Article
ISSN
1874-1029

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โœฆ Synopsis

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. Key words Wireless networked control system (WNCS), adaptive coded modulation (ACM), equivalent delay (ED), discrete-time system, time-varying input delay, stabilization

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