Optimal tracking performance of networked control systems under multi-constraints
CHEN Chao-yang
GUI Wei-hua
GUAN Zhi-hong
CHI Ming
ZHOU Shao-wu
Abstract：In this paper,the tracking performance limitations of linear time-invariant networked control systems(NCSs) with two-channel constraints for random reference signal is investigated. Network communication contains channel noise and communication bandwidth.The plant is considered as a minimum phase and unstable system,and the system has dis-tinct multiple non-minimum phase zero and distinct multiple unstable pole.For the cases of up-link and down-link channel with limited bandwidth and additive white Gaussian noise(AWGN)effect,and the optimal tracking performance for net-worked control systems is obtained by adopting two-degree controllers and Youla-parametric method based on frequency domain.The results show that the optimal tracking performance depends on structural characteristics of the plant(such as the non-minimum phase zeros,unstable poles and gain at all frequencies of the given plant),reference input signal,network characteristics(communication bandwidth,the statistical characteristics of AWGN).Finally,a typical example is given to illustrate the theoretical results.
Keywords：multi-channel constraintsadditive white Gaussian noisetracking performancenetworked control systems
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1195-1200 )