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FIXED-TIME SAFE TRACKING CONTROL OF SYSTEMS VIA UNIFIED TRANSFORMATION FUNCTIONS
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SYSNO ASEP 0573491 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title FIXED-TIME SAFE TRACKING CONTROL OF SYSTEMS VIA UNIFIED TRANSFORMATION FUNCTIONS Author(s) Guo, Ch. (CN)
Hu, J. (CN)
Hao, J. (CN)
Čelikovský, Sergej (UTIA-B) RID, ORCID
Hu, X. (CN)Number of authors 5 Source Title Kybernetika. - : Ústav teorie informace a automatizace AV ČR, v. v. i. - ISSN 0023-5954
Roč. 59, č. 3 (2023), s. 342-364Number of pages 23 s. Publication form Print - P Language eng - English Country CZ - Czech Republic Keywords Fixed-time safe control ; Nonlinear pure-feedback systems ; State constrains ; State constrains ; Dynamic surface control ; Unified transformation function Subject RIV BC - Control Systems Theory OECD category Automation and control systems R&D Projects GA21-03689S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UTIA-B - RVO:67985556 UT WOS 001039582300002 EID SCOPUS 85165328854 DOI 10.14736/kyb-2023-3-0342 Annotation In this paper, a fixed-time safe control problem is investigated for an uncertain high-order nonlinear pure-feedback system with state constraints. A new nonlinear transformation function is firstly proposed to handle both the constrained and unconstrained cases in a unified way. Further, a radial basis function neural network is constructed to approximate the unknown dynamics in the system and a fixed-time dynamic surface control (FDSC) technique is developed to facilitate the fixed-time control design for the uncertain high-order pure-feedback system. Combined with the proposed unified transformation function and the FDSC technique, an adaptive fixed-time control strategy is proposed to guarantee the fixed-time tracking. The novel original results of the paper allow to design the independent unified flexible fixed-time control strategy taking into account the actual possible constraints, either present or missing. Numerical examples are presented to demonstrate the proposed fixed-time tracking control strategy. Workplace Institute of Information Theory and Automation Contact Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Year of Publishing 2024 Electronic address https://www.kybernetika.cz/content/2023/3/342
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