Regulation performance limitation of networked control systems under dual-channel noise constraints

In this paper, we examine the regulation performance of single-input single-output networked control systems (NCSs). Network limitations such as time delay, noise, and insufficient bandwidth significantly challenge the regulation performance of NCSs. We derive the regulation performance limits under dual-channel Gaussian noise, encoding–decoding processes, and bandwidth constraints using coprime factorization and spectral techniques. Our findings reveal that the regulation performance of NCSs is closely associated with the nonminimum phase zeros, unstable poles, and the communication constraints of the network. We also present a numerical simulation to validate our findings.