Robust asymptotic stabilization of a flexible spacecraft by combination of passivity and sliding mode methods
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2014, Vol 8, Issue 9
Abstract
This paper considers the problem of asymptotic stabilizing of a flexible spacecraft in the presence of inertia uncertainties and external disturbances. In this system the inertia uncertainties are in the kind of matched uncertainties. For this purpose a controller is designed based on the combination of passivity concept and sliding mode method. This controller is robust against external disturbances and inertia uncertainties. In this way the sliding surfaces are designed by passivity concept and then the robust controller is designed by sliding mode method to eliminate the effects of matched uncertainties and external disturbances and guarantees the robust asymptotic stability of the closed-loop system. Also, Computer simulations denote the efficiency of the proposed controller in robust asymptotic stabilizing of the flexible spacecraft.
Authors and Affiliations
Hamed Chenarani| School of Electrical and Electronic Engineering. Shiraz university of Technology. Modares Blvd., Shiraz, Iran., Tahereh Binazadeh| School of Electrical and Electronic Engineering. Shiraz university of Technology. Modares Blvd., Shiraz, Iran., Mohammad Hosein Shafiei| School of Electrical and Electronic Engineering. Shiraz university of Technology. Modares Blvd., Shiraz, Iran.
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