title: Adaptive sampling rate control for networked systems based on statistical characteristics of packet disordering.
abstract: This paper investigates an adaptive sampling rate control scheme for networked control systems (NCSs) subject to packet disordering. The main objectives of the proposed scheme are (a) to avoid heavy packet disordering existing in communication networks and (b) to stabilize NCSs with packet disordering, transmission delay and packet loss. First, a novel sampling rate control algorithm based on statistical characteristics of disordering entropy is proposed; secondly, an augmented closed-loop NCS that consists of a plant, a sampler and a state-feedback controller is transformed into an uncertain and stochastic system, which facilitates the controller design. Then, a sufficient condition for stochastic stability in terms of Linear Matrix Inequalities (LMIs) is given. Moreover, an adaptive tracking controller is designed such that the sampling period tracks a desired sampling period, which represents a significant contribution. Finally, experimental results are given to illustrate the effectiveness and advantages of the proposed scheme.
authors.affiliation: Lab of Operation and Control, Shenyang University of Chemical Technology, Liaoning 110142, PR China(1); Key Laboratory of Networked Control Systems, Shenyang Institute of Automation, Chinese Academy of Sciences, Liaoning 110016, PR China(1); Energy Research Institute @ Nanyang Technological University, 637553, Singapore. Electronic address: li_jinna@ntu.edu.sg.
authors.forename: Jin-Na
authors.initials: JN
authors.lastname: Li
authors.affiliation: Division of Control and Instrumentation, School of Electrical and Electronic Engineering, College of Engineering, Nanyang Technological University, 639798, Singapore.
authors.forename: Meng-Joo
authors.initials: MJ
authors.lastname: Er
authors.affiliation: Energy Research Institute @ Nanyang Technological University, 637553, Singapore.
authors.forename: Yen-Kheng
authors.initials: YK
authors.lastname: Tan
authors.affiliation: Key Laboratory of Networked Control Systems, Shenyang Institute of Automation, Chinese Academy of Sciences, Liaoning 110016, PR China(1). Electronic address: yhb@sia.cn.
authors.forename: Hai-Bin
authors.initials: HB
authors.lastname: Yu
authors.affiliation: Key Laboratory of Networked Control Systems, Shenyang Institute of Automation, Chinese Academy of Sciences, Liaoning 110016, PR China(1).
authors.forename: Peng
authors.initials: P
authors.lastname: Zeng
keywords: Networked control systems (NCSs); Packet disordering; Sampling rate; Stochastic stability