引用本文:刘善伍,王俊y,容建刚,等.偏置动量卫星阻尼力矩作用下的姿态运动特性分析及控制方法[J].控制与决策,2019,34(10):2263-2267
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偏置动量卫星阻尼力矩作用下的姿态运动特性分析及控制方法
刘善伍,王俊y, 容建刚, 赵永佳, 陈宏宇
(上海微小卫星工程中心,上海201003)
摘要:
针对偏置动量卫星阻尼阶段的姿态运动特性进行分析,并基于时域分析方法提出弱偏置角动量的选取方法,改善阻尼过程中滚动-偏航角收敛的动态性能.以实际应用为背景,考虑一箭多星发射模式下,安装约束的限制导致星箭分离后偏置角动量方向严重偏离轨道面法线方向的情况,提出一种基于弱偏置角动量的姿态控制方法,在无需三轴姿态信息的情况下,可以避免由于偏置角动量的定轴性导致滚动-偏航角收敛时间很长的问题.仿真结果表明,所提出的方法能够有效减少姿态捕获时间,且易于实现,具有较高的工程实用价值.
关键词:  偏置动量卫星  弱偏置角动量  姿态捕获  动量轮起旋  阻尼力矩
DOI:10.13195/j.kzyjc.2018.0223
分类号:V448.22
基金项目:
Analysis and control method of attitude motion characteristics under damping moment of bias-momentum satellite
LIU Shan-wu,WANG Jun,RONG Jian-gang,ZHAO Yong-jia\makebox,CHEN Hong-yu
(Shanghai Engineering Center for Microsatellites,Shanghai201003,China)
Abstract:
The attitude motion characteristic of the bias-momentum satellite at the rate damping stage is analyzed, and a method for selecting weak bias angular momentum is proposed based on time-domain analysis to improve the dynamic performance of roll-yaw convergence. Considering the multi-star launching mode, the limitation of the installation constraints leads to the serious deviation of the bias angular momentum from the normal direction of the orbit after the separation, therefore, an attitude control method based on weak bias angular momentum is proposed. The method can avoid the problem that the convergent time of the roll-yaw angle is longer due to the gyroscopic intertia of bias angular momentum. The simulation results show that the proposed method can effectively reduce the attitude acquisition time and is easy to be implemented in engineering.
Key words:  bias-momentum satellite  weak bias angular momentum  attitude acquisition  spinning momentum wheel  damping moment

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