State estimation and finite-frequency fault detection for interconnected switched cyber-physical systems  

作　　者：Shenghui GUO Mingzhu TANG Darong HUANG Jiafeng SONG 

机构地区：[1]School of Electronic and Information Engineering,Suzhou University of Science and Technology,Suzhou 215009,China [2]School of Artificial Intelligence,Anhui University,Hefei 230601,China [3]Tsinghua University Suzhou Automobile Research Institute,Suzhou 215200,China

出　　处：《Science China(Information Sciences)》2023年第9期190-208,共19页中国科学（信息科学）（英文版）

基　　金：National Natural Science Foundation of China(Grant Nos.62273065,61703296);China Postdoctoral Science Foundation(Grant No.2022M721901);Opening Project of the Key Laboratory of Bionic Engineering(Ministry of Education),Jilin University(Grant No.K202208)。

摘　　要：For switched cyber-physical systems with disturbances and actuator faults,we address fault detection and isolation problems.First,the preconditions relative to subsystems are discussed in detail,and the original subsystems are turned into an overall system.Second,the frequency ranges of faults are considered to belong to the finite-frequency domain,and the observer,which makes the residual robust against disturbances and sensitive to faults,is designed by combining the finite-frequency H_(-)technique with the mixed L_(2)-L_(∞)/H_(∞)technique.Third,design conditions,which guarantee that the error system is stable and satisfies the mixed performance,are derived using the average dwell time method and Lyapunov functionals.Finally,a traffic density dynamic model is proposed to demonstrate the validity and effectiveness of the proposed method.

关 键 词：switched system fault detection and isolation mixed L_(2)-L_(∞)/H_(∞) H_(-)technique 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]