Publisher : The Korean Society for Aeronautical & Space Sciences
DOI : 10.5139/IJASS.2010.11.3.240
Title & Authors
Model Identification and Attitude Control Methodology for the Flexible Body of a Satellite Lho, Young-Hwan;
The controller of a model reference adaptive control monitors the plant's inputs and outputs to acknowledge its characteristics. It then adapts itself to the characteristics it encounters instead of behaving in a fixed manner. An important part of every adaptive scheme is the adaptive law for estimating the unknown parameters on line. A more precise model is required to improve performance and to stabilize a given dynamic system, such as a satellite in which performance varies over time and the coefficients change due to disturbances, etc. After model identification, the robust controller () is designed to stabilize the rigid body and flexible body of a satellite, which can be perturbed due to disturbance. The result obtained by the controller is compared with that of the proportional and integration controller which is commonly used for stabilizing a satellite.
Satellite attitude control;Adaptive control;Model identification;Proportional and integration controller;Robust controller ();
Dorato, P., Park, H. B., and Li, Y. (1989). An algorithm for interpolation with units in H-infinity, with applications to feedback stabilization. Automatica, 25, 427-430.
Giarre, L., Milanese, M., and Taragna, M. (1997). H-infinity identification and model quality evaluation. IEEE Transactions on Automatic Control, 42, 188-199.
Ioannou, P. A. and Datta, A. (1991). Robust adaptive control: a unified approach. Proceedings of the IEEE, 79, 1736-1768.
Jin, I. M., Lho, Y. H., and Kim, Z. C. (1994). A study on the attitude control techniques of Koreasat. Korea Automatic Control Conference, Daejeon, Korea. pp. 18-20.
kimura, H. (1984). Robust stabilizability for a class of transfer functions. IEEE Transactions on Automatic Control, 29, 788-793.