Title: Spacecraft attitude control using non-singular finite time convergence fast terminal sliding mode

Authors: Pyare Mohan Tiwari; S. Janardhanan; Masuq-un-Nabi

Addresses: Department of Electrical Engineering, Amity University Noida, Noida-201303, Uttar Pradesh, India ' Department of Electrical Engineering, Indian Institute of Technology, New Delhi, Hauz Khas – 110016, New Delhi, India ' Department of Electrical Engineering, Indian Institute of Technology, New Delhi, Hauz Khas – 110016, New Delhi, India

Abstract: In this work, a finite time convergent, non-singular continuous time sliding mode controller is proposed to control the attitude of rigid spacecraft. The proposed controller is derived using non-singular fast terminal sliding mode (NFTSM) with power rate reaching law. The fast convergence with finite time stability is ensured both in reaching phase as well in sliding phase, and is proved using Lyapunov-type theorem. The effectiveness of proposed controller is verified by numerous simulation results. The results show that attitude control system is made globally stable and robust enough to negate model uncertainties, bounded disturbances, and actuator saturation problems with a control input of continuous nature.

Keywords: finite time; continuous time; fast terminal sliding mode; non-singular FTSM; Lyapunov theorem; chattering; spacecraft attitude control; fast convergence; controller design; simulation; model uncertainties; bounded disturbances; actuator saturation; rigid spacecraft; sliding mode control; SMC.

DOI: 10.1504/IJIT.2012.053289

International Journal of Instrumentation Technology, 2012 Vol.1 No.2, pp.124 - 142

Received: 03 Jul 2012
Accepted: 16 Jan 2013
Published online: 17 Sep 2014 *

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