Abstract
In this paper, we analyze generalized dynamics of MEDs (Momentum Exchange Devices) and develop an easy-to-use LPV (Linear Parameter-Varying) model, in which we deal with 3-axis attitude control of a spacecraft equipped with two parallel DGVSCMGs (DoubleGimbal Variable-Speed Control Moment Gyros). Although it is hard to consider overall stability and control performance of attitude control at the same time with conventional methods, this paper attains both of them via LPV control theory, while using approximation of the final error quaternion value. Through a numerical example, we demonstrate the efficiency of the proposed method to compare with a conventional method.
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