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针对空间站构型的复杂性问题,建立了一种高效的姿态动力学数值分析方法。在建立飞行器姿态运动的刚体动力学模型和重力梯度力矩模型的基础上,对空间站构型进行有限微元划分,将其构型转化为微元集合用于进行气动力矩计算。基于该数值分析方法,提出了空间站力矩平衡姿态的动力学计算方法,从而避免全姿态遍历的大规模计算。仿真结果表明,微元划分方法能够有效的计算出复杂构型空间飞行器在任意姿态下的气动力矩影响,所提出的力矩平衡姿态计算方法能够快速收敛并得到稳态解。
Aiming at the complexity of space station configuration, an efficient numerical method of attitude dynamics is established. On the basis of establishing the rigid body dynamics model and the gravity gradient moment model of the aircraft attitude movement, the finite element division of the space station configuration is made and its configuration is transformed into a set of micro-elements for calculating the aerodynamic moment. Based on the method of numerical analysis, a dynamic calculation method of attitude balance moment of space station is proposed, which avoids the large-scale calculation of all-attitude traversal. The simulation results show that the method can effectively calculate the aerodynamic moment in complex attitude spacecraft under arbitrary attitude, and the proposed method can quickly converge and obtain the steady state solution.