文献类型：期刊文献

英文题名：Input-to-State Stabilization of Interval Type-2 Fuzzy Systems Subject to Cyberattacks: An Observer-Based Adaptive Sliding Mode Approach

作者：Zhang, Zhina[1];Niu, Yugang[1];Song, Jun[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Adv Control & Optimizat Chem Proc, Shanghai 200237, Peoples R China

年份：2020

卷号：28

期号：1

起止页码：190

外文期刊名：IEEE TRANSACTIONS ON FUZZY SYSTEMS

收录：;EI(收录号：20200308040620);WOS:【SCI-EXPANDED(收录号:WOS:000506608300018)】；

基金：This work was supported in part by the National Natural Science Foundation of China under Grant 61673174 and Grant 61773162, and in part by the 111 Project from China underGrant B17017.

语种：英文

外文关键词：Cyberattack; Fuzzy systems; Observers; Symmetric matrices; Nonlinear systems; Actuators; Adaptive systems; Cyberattacks; input-to-state stability (ISS); interval type-2 (IT2) fuzzy system; sliding mode control (SMC); sliding mode observer

摘要：This paper focuses on the sliding mode control (SMC) problem of interval type-2 (IT2) fuzzy systems subject to the unmeasurable state and cyberattacks. A key issue is how to design a state observer under the constraint that only the bounds of membership functions are known. To this end, this paper introduces two weighting factors to construct a new membership function. Besides, the concept of input-to-state stability (ISS) is utilized to deal with the residual term resulting from the cyberattacks and external disturbances. The sufficient condition is established such that the sliding mode dynamics and the estimated error dynamics are input-to-state stable. Furthermore, by online estimating the unknown parameters in upper bounds of cyberattacks and external disturbances, an adaptive sliding mode controller is synthesized such that the reachability of the prescribed sliding surface can be guaranteed and the effect of cyberattacks on the system performance can be effectively attenuated. Finally, the validity of the proposed method is illustrated by a mass-spring-damper system.