On design of robust sliding mode observer for nonlinear networked time-delay systems with communication constraints

Zehua Ye; Wen-An Zhang; Dan Zhang; Hongjie Ni

doi:10.1016/j.isatra.2020.05.014

On design of robust sliding mode observer for nonlinear networked time-delay systems with communication constraints

ISA Trans. 2022 May:124:260-270. doi: 10.1016/j.isatra.2020.05.014. Epub 2020 May 18.

Authors

Zehua Ye¹, Wen-An Zhang², Dan Zhang³, Hongjie Ni⁴

Affiliations

¹ Department of Automation, Zhejiang University of Technology, 310023, Hangzhou, China. Electronic address: 2111803109@zjut.edu.cn.
² Department of Automation, Zhejiang University of Technology, 310023, Hangzhou, China. Electronic address: wazhang@zjut.edu.cn.
³ Department of Automation, Zhejiang University of Technology, 310023, Hangzhou, China. Electronic address: danzhang@zjut.edu.cn.
⁴ Department of Automation, Zhejiang University of Technology, 310023, Hangzhou, China. Electronic address: zdfynhj@zjut.edu.cn.

PMID: 32475538
DOI: 10.1016/j.isatra.2020.05.014

Abstract

For a class of nonlinear discrete-time networked systems with time-delay and communication constraints, this paper is concerned with the design of robust sliding mode observer (SMO), where only one sensor node is allowed to transmit information to remote observer. We focus on the design of SMO to guarantee the exponentially stable of estimation error system and have a desired H_∞ disturbance attenuation level in presence of communication constraints. Firstly, a sensor selector is introduced such that only one sensor node is chosen and its measurement can be transmitted to remote SMO at each time instant. Then, a sufficient condition is derived by introducing a piece-wise Lyapunov functional and using the Jensen's Inequality, which ensures the prescribed performance of estimation error system in the sliding mode surface that we have defined. Moreover, the observer gain matrices can be obtained through solving some matrix inequalities given in the main results. Finally, a simulation study performed on the F404 aircraft engine state monitoring is introduced to validate the robust SMO design.

Keywords: Communication constraints; Exponentially stable; Network control systems; Sliding mode observer.