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Fixed-Time Attitude Control for Rigid Spacecraft With Actuator Saturation and Faults / Boyan Jiang; Qinglei Hu; Michael Friswell

IEEE Transactions on Control Systems Technology, Volume: 24, Issue: 5, Pages: 1892 - 1898

Swansea University Author: Michael, Friswell

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Abstract

This brief investigates the finite-time control problem associated with attitude stabilization of a rigid spacecraft subject to external disturbance, actuator faults, and input saturation. More specifically, a novel fixed-time sliding mode surface is developed, and the settling time of the defined s...

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Published in: IEEE Transactions on Control Systems Technology
ISSN: 1063-6536 1558-0865
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa30889
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Abstract: This brief investigates the finite-time control problem associated with attitude stabilization of a rigid spacecraft subject to external disturbance, actuator faults, and input saturation. More specifically, a novel fixed-time sliding mode surface is developed, and the settling time of the defined surface is shown to be independent of the initial conditions of the system. Then, a finite-time controller is derived to guarantee that the closed-loop system is stable in the sense of the fixed-time concept. The actuator-magnitude constraints are rigorously enforced and the attitude of the rigid spacecraft converges to the equilibrium in a finite time even in the presence of external disturbances and actuator faults. Numerical simulations illustrate the spacecraft performance obtained using the proposed controller.
College: College of Engineering
Issue: 5
Start Page: 1892
End Page: 1898