Robust low order dynamic controller for flexible spacecraft

Bhat, Seetharama M and Sreenatha, AG and Shrivastava, SK (1991) Robust low order dynamic controller for flexible spacecraft. In: IEE Proceedings D of Control Theory and Applications, 138 (5). pp. 460-668.

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Abstract

The design of an optimal low-order dynamic controller with a-shift (alpha-shift) for attitude control is attempted for a flexible satellite which is a solar electric propulsion spacecraft. The satellite consists of a central rigid body to which two flexible solar panels are attached. The design of a third-order dynamic controller is accomplished using modified linear quadratic Gaussian theory. The improvement in the satellite attitude response with a small uniform a-shift is demonstrated by numerical simulation. A novel concept of block-shift is introduced to move different sets of closed-loop eigenvalues by different amounts. The advantages of this type of block-shift in the design of the controller are shown by simulation. The robustness of the controller with respect to parameter variations is shown to be ample.

Item Type:	Journal Article
Publication:	IEE Proceedings D of Control Theory and Applications
Publisher:	IEE
Additional Information:	Copyright of this article belongs to Institution of Electrical Engineers (IEE)
Keywords:	Control systems;Low-order dynamic controller
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	25 Nov 2005
Last Modified:	19 Sep 2010 04:20
URI:	http://eprints.iisc.ac.in/id/eprint/3764

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