文章基本信息

标题：LPV Control and Singularity Avoidance of a Spacecraft with DGCMGs
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作者：Takahiro Sasaki ; Takashi Shimomura ; Sayaka Kanata 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2016
卷号：49
期号：17
页码：152-157
DOI：10.1016/j.ifacol.2016.09.027
语种：English
出版社：Elsevier
摘要：In this paper, we analyze the dynamics of a spacecraft with Multiple Double-Gimbal Control Moment Gyros (DGCMGs). After local linearization of this nonlinear dynamics, we develop an easy-to-use Linear Parameter-Varying (LPV) model, in which we deal with 3-axis attitude control of a spacecraft equipped with two parallel DGCMGs. Then, we propose a singularity robustness (SR) steering law together with a sigmoid function as a singularity robust parameter. Although it is hard to consider overall stability and control performance of attitude control at the same time with conventional Lyapunov function-based controllers, this paper attains both of approximate stability and control performance via LPV control theory, while using redefining the control input of the generalized plant. Through a numerical example, usefulness of the proposed method is demonstrated.
关键词：ActuatorsVehicle dynamicsLinear optimal controlSingular systemsGimbalsWheelsAutomatic gain control