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论文类型：期刊论文

发表时间：2016-10-01

发表刊物：ACTA ASTRONAUTICA

收录刊物：SCIE、EI、Scopus

卷号：127

页面范围：226-234

ISSN号：0094-5765

关键字：Solar power satellite; Space solar power station; Attitude dynamics; Optimal control; LQR

摘要：The robust optimal sun-pointing control strategy for a large geostationary solar power satellite (SPS) is addressed in this paper. The SPS is considered as a huge rigid body, and the sun-pointing dynamics are firstly proposed in the state space representation. The perturbation effects caused by gravity gradient, solar radiation pressure and microwave reaction are investigated. To perform sun-pointing maneuvers, a periodically time-varying robust optimal LQR controller is designed to assess the pointing accuracy and the control inputs. It should be noted that, to reduce the pointing errors, the disturbance rejection technique is combined into the proposed LQR controller. A recursive algorithm is then proposed to solve the optimal LQR control gain. Simulation results are finally provided to, illustrate the performance of the proposed closed-loop system. (C) 2016 IAA. Published by Elsevier Ltd. All rights reserved.