文献类型：期刊文献

英文题名：Performance-guaranteed adaptive self-healing control for wastewater treatment processes

作者：Du, Peihao[1];Peng, Xin[1];Li, Zhongmei[1];Li, Linlin[2];Zhong, Weimin[1]

机构：[1]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, Shanghai 200237, Peoples R China;[2]Univ Sci & Technol Beijing, Sch Automat & Elect Engn, Key Lab Knowledge Automat Ind Proc, Minist Educ, Beijing 100083, Peoples R China

年份：2022

卷号：116

起止页码：147

外文期刊名：JOURNAL OF PROCESS CONTROL

收录：;EI(收录号：20222612295179);WOS:【SCI-EXPANDED(收录号:WOS:000822930300012)】；

基金：This work was supported by the National Natural Science Foundation of China (Major Program: 61890930-3) , the National Natural Science Fund for Distinguished Young Scholars (61925305) , the National Natural Science Foundation of China (62173145, 62173144) , and the Shanghai AI Lab.

语种：英文

外文关键词：Self-healing control; Adaptive control; Wastewater treatment processes (WWTPs); Non-ideal actuator; User-defined performance

摘要：This paper investigates the performance-guaranteed adaptive self-healing control for wastewater treatment processes (WWTPs), in which the non-ideal actuator, i.e., the actuator suffering from faults and constraints is considered. Firstly, an error conversion dynamic model based on a new prespecifiedtime performance function is presented to guarantee that the tracking error is quickly maintained in the user-defined area regardless of the occurrence of actuator faults and constraints. Secondly, a novel smooth approximation function is constructed to imitate the non-smooth characteristics of actuator constraints. Thirdly, the unknown bounds of non-ideal actuator parameters are estimated online in place of parameters themselves. Meanwhile, the lumped disturbances induced by the external disturbance and the fuzzy approximation error are suppressed via H infinity control theory. In addition, the stability analysis is carried out by the Lyapunov stability criterion to guarantee that all closed-loop system signals are bounded. Finally, comparative simulation results demonstrate that the proposed method has the superiorities in terms of preferable dynamic tracking performance with fast transient convergence, strong robustness and performance recovery under non-ideal actuator. (c) 2022 Published by Elsevier Ltd.