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A unified framework to design time-constrained control systems and its application to attitude control of a rigid spacecraft

Ezabadi, M ; Sharif University of Technology | 2024

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ifacol.2024.08.487
  3. Publisher: 2024
  4. Abstract:
  5. This paper presents a unified educational framework for introducing and analyzing different time-constrained control methodologies for nonlinear systems. The formulation covers asymptotic, finite-time, fixed-time, predefined-time, and prescribed-time control approaches. For each methodology, the control design requirements are outlined, followed by the controller formulation and stability analysis using a generic second-order strict-feedback nonlinear system model. This unified treatment allows for a cohesive learning journey to understand the theoretical foundations and relative merits of the various time-constrained control strategies. To illustrate the practical utility of these techniques, the frameworks are applied to the attitude control problem for a rigid spacecraft. Comparative simulation results highlight the convergence behavior and tracking performance achieved by each method on this aerospace vehicle application. The unified presentation provides a pedagogical approach for the systematic study of time-constrained control methodologies of relevance for aerospace systems. This formulation can serve as an educational resource in aerospace control curricula for exposing students to these advanced nonlinear control techniques. Copyright © 2024 The Authors
  6. Keywords:
  7. Asymptotic stability ; Finite-time stability ; Fixed-time stability ; Control system analysis ; Control system stability ; Curricula ; Feedback ; Nonlinear control systems ; Structural dynamics ; Students ; Teaching ; Asymptotics ; Constrained controls ; Fixed time ; Predefined-time stability ; Prescribed-time stability ; Time stability ; Attitude control ; Finite time stability
  8. Source: IFAC-PapersOnLine ; Volume 58, Issue 16 , 2024 , Pages 205-210 ; 24058971 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S2405896324012564