title: Optimal performance of networked control systems under the packet dropouts and channel noise.
abstract: The optimal tracking performance of single-input single-output (SISO) discrete-time networked control systems (NCSs) with the packet dropouts and channel noise is studied in this paper. The communication channel is characterized by three parameters: the packet dropouts, channel noise and the encoding and decoding. The explicit expression of the optimal tracking performance is obtained by using the spectral factorization. It is shown that the optimal tracking performance dependents on the nonminimum phase zeros, unstable poles of the given plant, as well as the packet dropout probability, channel noise and the encoding and decoding. The optimal tracking performance is improved by two-parameter compensator. Finally, a typical example is given to illustrate the theoretical results.
authors.affiliation: Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China; Department of Control Science and Engineering, Hubei Normal University, Huangshi, 435002, P.R. China.
authors.forename: Xi-Sheng
authors.initials: XS
authors.lastname: Zhan
authors.affiliation: Department of Control Science and Engineering, Hubei Normal University, Huangshi, 435002, P.R. China. Electronic address: xisheng519@126.com.
authors.forename: Jie
authors.initials: J
authors.lastname: Wu
authors.affiliation: Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.affiliation: Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China.
authors.forename: Xiao-Wei
authors.initials: XW
authors.lastname: Jiang
keywords: Encoding and decoding; Networked control systems; Nonminimum phase zeros; Optimal tracking performance; Packet dropout probability