航天器多自由度太阳电池阵关节弹性载荷分析

Analysis of elastic load on multi-degree-of-freedom joint of spacecraft solar panel

文章针对多自由度太阳电池阵在外界干扰力作用下产生弹性振动可能导致关节锁止电机失效的问题进行分析研究。首先建立了太阳电池阵的有限元模型,以及关节刚体载荷和弹性载荷动力学分析方法;然后以远距离操作工作模式为例,采用混合坐标法开展了太阳电池阵关节处的刚/弹载荷分析和对比。研究获取的关节弹性载荷可为关节锁止机构设计提供参考输入条件。

The multi-degree-of-freedom solar panel of spacecraft is susceptible to elastic vibrations under the perturbation of the attitude control engine,which may lead to failure of the locking motor at the joint.In this paper,the FEM and dynamic model of the solar panel is established,for the analysis of the rigid and elastic loads.Taking a specific mode case as an example,the rigid and elastic loads at the joint of the solar panel are analyzed and compared.The input can thus be provided for the design of the joint and the locking motor.