Abstract: In this paper, a fast terminal sliding mode control (FTSMC) scheme with double closed loops is proposed for the spacecraft attitude control. The FTSMC laws are included both in an inner control loop and an outer control loop. Firstly, a fast terminal sliding surface (FTSS) is constructed, which can drive the inner loop tracking-error and the outer loop tracking-error on the FTSS to converge to zero in finite time. Secondly, FTSMC strategy is designed by using Lyaponov's method for ensuring the occurrence of the sliding motion in finite time, which can hold the character of fast transient response and improve the tracking accuracy. It is proved that FTSMC can guarantee the convergence of tracking-error in both approaching and sliding mode surface. Finally, simulation results demonstrate the effectiveness of the proposed control scheme.
Free Bonus! To read the full version of this ISA Transactions article, click here.
ISA membership entitles you to free access to all ISA Transactions articles plus a wealth of technical content, industry information, free webinars, training opportunities, program discounts, certification and licensure and professional networking.
Click here to join ISA ... learn, advance, succeed![/dropshadowbox]
2006 Elsevier Science Ltd. All rights reserved.