Stability analysis and stabilization of wireless networked control systems based on deadband control scheduling
来源期刊：中南大学学报(英文版)2014年第11期
论文作者：LIU Ying-ying(刘英英) CHU Yun-kai(褚云凯) CHE Wei-wei(车伟伟) LIU Yi-yang(刘意杨)
文章页码：4228 - 4235
Key words：wireless networked control system; transmission deadband; time-varying delay; stability analysis; stabilization
Abstract: The stability analysis and stabilization problems of the wireless networked control systems (WNCSs) with signal transmission deadbands were considered. The deadbands were respectively set up at the sensor to the controller and the controller to the actor sides in the WNCS, which were used to reduce data transmission, furthermore, to decrease the network collision and node energy consumption. Under the consideration of time-varying delays and signal transmission deadbands, the model for the WNCS was presented. A novel Lyapunov functional which took full advantages of the network factors was exploited. Meanwhile, new stability analysis and stabilization conditions for the WNCS were proposed, which described the relationship of the delay bounds, the transmission deadband bounds and the system stability. Two examples were used to demonstrate the effectiveness of the proposed methods. The results show that the proposed approach can guarantee asymptotical stability of the system and reduce the data transmission effectively.
LIU Ying-ying(刘英英)1, CHU Yun-kai(褚云凯)2, CHE Wei-wei(车伟伟)3, LIU Yi-yang(刘意杨)2
(1. School of Information Engineering, Shenyang University, Shenyang 110044, China;
2. Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China;
3. Key Laboratory of Manufacturing Industrial Integrated Automation,
(Shenyang University), Shenyang 110044, China)
Abstract:The stability analysis and stabilization problems of the wireless networked control systems (WNCSs) with signal transmission deadbands were considered. The deadbands were respectively set up at the sensor to the controller and the controller to the actor sides in the WNCS, which were used to reduce data transmission, furthermore, to decrease the network collision and node energy consumption. Under the consideration of time-varying delays and signal transmission deadbands, the model for the WNCS was presented. A novel Lyapunov functional which took full advantages of the network factors was exploited. Meanwhile, new stability analysis and stabilization conditions for the WNCS were proposed, which described the relationship of the delay bounds, the transmission deadband bounds and the system stability. Two examples were used to demonstrate the effectiveness of the proposed methods. The results show that the proposed approach can guarantee asymptotical stability of the system and reduce the data transmission effectively.
Key words:wireless networked control system; transmission deadband; time-varying delay; stability analysis; stabilization
