文献类型：期刊文献

英文题名：Observer-Based Adaptive Fuzzy Quantized Fault-Tolerant Control of Nonstrict-Feedback Nonlinear Systems With Sensor Fault

作者：Wu, Tiantian[1];Yu, Zhaoxu[1];Li, Shugang[2]

机构：[1]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, Shanghai 200237, Peoples R China;[2]Shanghai Univ, Dept Informat Management, Shanghai 200444, Peoples R China

年份：2023

卷号：31

期号：6

起止页码：1900

外文期刊名：IEEE TRANSACTIONS ON FUZZY SYSTEMS

收录：;EI(收录号：20224413035947);WOS:【SCI-EXPANDED(收录号:WOS:001001059800012)】；

基金：This work was supported in part by the National Natural Science Foundation of China under Grant 71871135 and in part by the Fundamental Research Funds for the Central Universities under Grant 222201717006.

语种：英文

外文关键词：Quantization (signal); Adaptive systems; Nonlinear systems; Robot sensing systems; Control systems; Fuzzy logic; Observers; Adaptive fuzzy control; fault-tolerant control (FTC); input and output quantization; nonstrict-feedback non-linear system; sensor fault

摘要：This article focuses on the problem of adaptive quantized fault-tolerant tracking control for a class of uncertain nonstrict-feedback nonlinear systems in the presence of input and output quantization and sensor fault. The main technical challenges come from how to deal with the input and output quantization errors and the partial loss of sensors' effectiveness. First, a new observer, including the quantized input and output signals and the estimation of fault parameter, is designed to reconstruct the unavailable states, and some special techniques are developed to deal with the sector-bounded quantization errors. Furthermore, based on the cubic absolute-value Lyapunov function, the adaptive fault compensation strategy is presented to make up for the influence from sensor fault upon the control performance. Then, with the aid of the fuzzy logic system approximation method and the backstepping technique, a novel output feedback adaptive fuzzy fault-tolerant control scheme is proposed for this class of systems, such that all the signals in the closed-loop system are semiglobally uniformly ultimately bounded, while the tracking error remains in a small vicinity of the origin. Finally, the effectiveness and the applicability of the proposed control scheme are validated by conducting two simulation examples.