Mars Powered Descent Phase Guidance Design Based on Fixed-Time Stabilization Technique

Zhang, Yao, Vepa, Ranjan, Li, Guang and Zeng, Tianyi (2019) Mars Powered Descent Phase Guidance Design Based on Fixed-Time Stabilization Technique. IEEE Transactions on Aerospace and Electronic Systems, 55 (4). pp. 2001-2011. ISSN 0018-9251

Zhang Mars Powered Descent 2018 Accepted.pdf - Accepted Version

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This paper proposes a guidance scheme to achieve an autonomous precision landing on Mars and proposes a practical fixed-time stabilization theorem to analyze the robustness of the guidance. The proposed guidance is mainly based on the fixed-time stabilization method, and it can achieve the precision landing within a pre-defined time. This property enables the proposed guidance to outperform the finite-time stabilization technique which cannot handle uncertainties well and whose convergence time is dependent on initial states. Compared with the existing fixed-time stabilization theorem, the proposed practical fixed-time stabilization theorem can achieve a shorter convergence time and cope with unknown disturbances. When the Mars landing guidance is designed by this proposed theorem, the upper bound of the landing time and the maximum landing error subject to unknown disturbances can be calculated in advance. Theoretical proofs and Monte Carlo simulation results confirm the effectiveness of the proposed theorem and the proposed guidance. Furthermore, the efficacy of the proposed guidance with thrust limitations is also demonstrated by testing of 50 cases with a range of initial positions and velocities.

Item Type: Article
Uncontrolled Keywords: Control input saturation, disturbance rejection, Mars landing missions, multiple sliding surfaces (MSS), powered descent phase, practical fixed-time stabilization
Subjects: G400 Computer Science
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: John Coen
Date Deposited: 06 Oct 2020 09:10
Last Modified: 31 Jul 2021 13:34

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