建立一类挠性航天器的动力学模型及面向控制的仿真环境

Building the Dynamics Model and Simulating Circumstances for the Control of a Kind of Flexible Spacecraft

对于一类具有一个中心刚体和两块对称安装的太阳帆板的挠性航天器,针对其帆板较长、弹性位移较大,导致根据文献[2]直接建立的模型不准的问题,提出将弹性帆板分段处理的方法,分别引入浮动坐标系,建立系统的动力学仿真模型。并将针对整体模型设计的控制规律作用于该模型,进行了数值仿真。仿真结果表明,对于大变形情况,分段处理的方法十分有效。

To some flexible spacecraft with a rigid center hub and two identical flexible plates,it can't be simulated accurately depending on the model in because the plate's length causes big elastic displacement. So this paper presents a method with which the system simulating model is built by partitioning the flexible plate into several parts and introducing the floating coordinate respectively. The control rule is designed by taking the plate as a whole. And numerical simulation is done .The simulating results show that this method is very efficient for big displacement.