| 引用本文: | 朱仕尧,谢燕,雷勇军.太阳能电池阵跟踪驱动过程扰振特性分析.[J].国防科技大学学报,2014,36(1):27-33.[点击复制] |
| ZHU Shiyao,XIE Yan,LEI Yongjun.Characteristic analysis of disturbance aroused by solar array tracking drive[J].Journal of National University of Defense Technology,2014,36(1):27-33[点击复制] |
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| 太阳能电池阵跟踪驱动过程扰振特性分析 |
| 朱仕尧, 谢燕, 雷勇军 |
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(国防科技大学 航天科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 太阳能电池阵对日跟踪驱动过程所产生的扰动是限制高精度航天器技术指标提高的主要因素之一。为获取驱动扰动的规律性特征，本文将太阳能电池阵及其驱动装置考虑为相互耦合的整体系统，从主要驱动环节出发建立其机电一体化扰振分析模型和Simulink动力学仿真模块，通过试验算例验证模型正确性,并分析了电池阵刚柔耦合和质心偏置等因素对扰振特性的影响。结果表明：转速波动将激起电池阵低阶扭振模态，扰动频谱具有步进电动机驱动和柔性结构振动的频率特性，但扭振扰动对刚体运动规律影响很小；质心偏置会引起电池阵平动与转动耦合的空间振动，激扰面外弯曲振型，改变扰振频率分布和放大扰振分量幅值。 |
| 关键词: 太阳能电池阵 跟踪驱动 扰振特性 刚柔耦合 质心偏置 |
| DOI：10.11887/j.cn.201401006 |
| 投稿日期：2013-05-24 |
| 基金项目:国家自然科学基金资助项目（11272348）；国家自然科学基金青年科学基金资助项目（11202233） |
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| Characteristic analysis of disturbance aroused by solar array tracking drive |
| ZHU Shiyao, XIE Yan, LEI Yongjun |
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(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The disturbance, aroused by sun-tracking drive of solar array, has become one of the major barriers for improving the performance of high-precision spacecraft. With the aim to obtain the regular characteristics of this disturbance, the solar array and the drive assembly were considered as a couping system and an electromechanical integration model and a dynamic simulation program are presented based on the major aspects of main driving steps and the Simulink software platform.. The correctness was verified by comparing the experiment results, and the effects of solar array rigid-flexible coupling and the centroid bias to disturbance characteristics were analyzed. The results indicate that the rotation speed fluctuation can activate low order torsion modes of solar array, and disturbance spectrums include both frequency characteristics of motor driving and structure vibration, but torsion vibration has little effect on rotation angle. The centroid bias of solar array can motivate translational-rotational coupling vibration, activate out-of-plane bending modes, change the distribution of disturbance spectrum, and increase the amplitude of disturbance. |
| Keywords: solar array tracking drive disturbance characteristic rigid-flexible coupling centroid bias |
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