On the achievable tracking performance of NCSs over SNR limited channels |
| |
Authors: | Xiaowei Jiang Xiangyong Chen Junwei Hu Huaicheng Yan Mingfeng Ge |
| |
Affiliation: | 1. School of Automation, China University of Geosciences, Wuhan 430074, PR China;2. School of Automation and Electrical Engineering, Linyi University, Linyi 276005, PR China;3. Hubei Key Laboratory of Advanced Control and Intelligent Automation of Complex Systems, Wuhan 435002, PR China;4. College of Mechatronics and Control Engineering, Hubei Normal University, Huangshi 435002, PR China;5. School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, PR China |
| |
Abstract: | In this paper, the achievable tracking performance limitations of discrete-time, multi-input multi-output (MIMO) networked control systems (NCSs) are studied. The channel is modeled as an additive white Gaussian noise and signal-to-noise ratio (SNR) limited channel with feedback. Under this framework, the closed relationships among stabilization, tracking performance, and SNR limited are quantitatively revealed. Some new results a.erived according to the allpass factorization and Youla parameterization of two degrees of freedom controller. The results show that the best tracking performance is in connection with the unstable poles, non-minimum phase zeros of the system. It is also demonstrated that the tracking performance will be badly degraded by feedback channel noise and due to the SNR limited. Finally, a simulation example is presented to validate the conclusions. |
| |
Keywords: | Corresponding authors at: Hubei Key Laboratory of Advanced Control and Intelligent Automation of Complex Systems Wuhan 435002 PR China. |
本文献已被 ScienceDirect 等数据库收录! |
|