Finite-time reentry attitude control using time-varying sliding mode and disturbance observer
type: Item
instance of: scholarly article
title: Finite-time reentry attitude control using time-varying sliding mode and disturbance observer
zbMATH Open document ID: 1394.93241
DOI: 10.1155/2015/262753
author: Xuzhong Wu
author: Shengjing Tang
author: Jie Guo
author: Y. Zhang
published in: Mathematical Problems in Engineering
publication date: 2018-08-27T00:00:00Z
review text: Summary: This paper presents the finite-time attitude control problem for reentry vehicle with redundant actuators in consideration of planet uncertainties and external disturbances. Firstly, feedback linearization technique is used to cancel the nonlinearities of equations of motion to construct a basic mode for attitude controller. Secondly, two kinds of time-varying sliding mode control methods with disturbance observer are integrated with the basic mode in order to enhance the control performance and system robustness. One method is designed based on boundary layer technique and the other is a novel second-order sliding model control method. The finite-time stability analyses of both resultant closed-loop systems are carried out. Furthermore, after attitude controller produces the torque commands, an optimization control allocation approach is introduced to allocate them into aerodynamic surface deflections and on-off reaction control system thrusts. Finally, the numerical simulation results demonstrate that both of the time-varying sliding mode control methods are robust to uncertainties and disturbances without chattering phenomenon. Moreover, the proposed second-order sliding mode control method possesses better control accuracy.
Mathematics Subject Classification ID: 93C95
Mathematics Subject Classification ID: 93B07
Mathematics Subject Classification ID: 93B12
zbMATH DE Number: 6925889
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2015/262753
OpenAlex ID: W1580840379
Wikidata QID: Q59117768
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description: scientific article; zbMATH DE number 6925889