Robustness analysis of magnetic torque controlled spacecraft altitude dynamics

Kim, Jongrae, Bates, Declan and Postlethwaite, Ian (2009) Robustness analysis of magnetic torque controlled spacecraft altitude dynamics. Automatic Control in Aerospace, 2 (1). ISSN 1974-5168

Full text not available from this repository. (Request a copy)

Abstract

This paper describes a systematic approach to the robustness analysis of linear periodically time-varying (LPTV) systems. The method uses the technique known as Lifting to transform the original time-varying uncertain system into linear fractional transformation (LFT) form. The stability and performance robustness of the system to structured parametric uncertainty can then be analysed non-conservatively using the structured singular value μ. The method is applied to analyse the stability robustness of an attitude control law for a spacecraft controlled by magnetic torquer bars, whose linearised dynamics can naturally be written in linear periodically time-varying form. The proposed method allows maximum allowable levels of uncertainty, as well as worst-case uncertainty combinations to be computed. The destabilising effect of these uncertain parameter combinations is verified in time-domain simulations.

Item Type: Article
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: Sarah Howells
Date Deposited: 15 Oct 2012 16:00
Last Modified: 06 Apr 2017 15:11
URI: http://nrl.northumbria.ac.uk/id/eprint/9670

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence