System Identification and Automatic Mass Balancing of Ground-Based Three-Axis Spacecraft Simulator
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Authors
Kim, J.J.
Agrawal, B.N.
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Date of Issue
2006
Date
August 2006
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Language
Abstract
The ground-based spacecraft simulator is a useful tool to develop and verify new control laws required by modern spacecraft applications. In order to simulate the space environment with the ground-based spacecraft simulator, the effects of gravity should be minimized. In this paper, a three-axis rotational rigid spacecraft simulator on a spherical air-bearing system is considered. The method of estimating the inertial properties of a spacecraft as well as the location of the center of mass is presented with the batch least-square estimation. The identified center of mass location is used to actuate the automatic mass balancing system to compensate for the center of mass offset. Adaptive control of the automatic mass balancing system is also presented when the balancing masses are actuated in real-time to eliminate the center of mass offset from the center of rotation. The proposed technique is implemented on the Three Axis Simulator 2 (TAS2) which is a ground-based experimental testbed for the Bifocal Relay Mirror Spacecraft (BRMS).
Type
Description
The article of record as published may be found at http://dx.doi.org/10.2514/6.2006-6595
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Department
Department of Mechanical and Aerospace Engineering
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Citation
AIAA Guidance, Navigation and Control Conference, Keystone, CO, August 2006.
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This publication is a work of the U.S. Government as defined
in Title 17, United States Code, Section 101. As such, it is in the
public domain, and under the provisions of Title 17, United States
Code, Section 105, is not copyrighted in the U.S.