Distributed fixed-time average-tracking for multi-agent systems with mismatched and matched disturbances. (August 2022)

• Record Type: Journal Article
• Authors: Li, Yu-Ling; Liu, Cheng-Lin; Zhang, Ya; Chen, Yang-Yang
• Is Part Of: Transactions of the Institute of Measurement and Control. Volume 44:Number 12(2022)
• Page Start: 2323
• Page End: 2335
• Publication Date: 2022-08
• Subjects: Distributed average-tracking -- second-order multi-agent systems -- fixed-time control -- mismatched disturbances -- disturbance observers; Automatic control -- Periodicals; Measuring instruments -- Periodicals; Commande automatique -- Périodiques; Mesure -- Instruments -- Périodiques; 681.2
• DOI: 10.1177/01423312221083785
• Languages: English
• ISSNs: 0142-3312

Abstract

In this paper, distributed fixed-time average-tracking problem is discussed for second-order multi-agent systems (MASs) with mismatched and matched disturbances. To address this issue, we first propose a novel distributed fixed-time average estimator for each agent to estimate the average value of multiple time-varying reference signals (TVRSs). Then, to tackle with the case in the presence of external mismatched and matched disturbances, a disturbance observer is constructed to estimate them in a fixed time. Finally, based on the disturbance observer, a fixed-time average-tracking protocol is designed to drive each agent to track the average value of multiple TVRSs within a fixed time. Simulation experiments are conducted to verify the effectiveness of the proposed fixed-time anti-disturbance average-tracking algorithm.