Abstract
This work presents the application and comparison of two satellite attitude control methods, using the satellite simulation platform developed by ITA, the MuSat, as a test bench. One of the algorithms under test applies feedback linearization, a method that was already validated using this test bed. The second control algorithm, developed during this research, applies control by state-dependent Riccati equation (SDRE) technique. A numerical simulation using a computational model of the MuSat, followed by an experiment using the physical platforms, is used to compare the control performance of both algorithms. The system in which the control is applied consists in a frictionless spherical air bearing that is able to rotate in three axes, allowing for validating attitude control algorithms in laboratory. The experimental results obtained indicate that the system had a better control performance under the SDRE algorithm than the algorithm based on feedback linearization.
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