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针对筒式偏心分离问题,以单星分离为例,基于多体动力学理论对小卫星分离过程动力学问题进行了仿真分析。分别对平动副约束简化模型和物理模型进行了探讨;论述了小卫星的偏心分离过程与地面模拟试验过程之间的对应比拟关系,对地面模拟试验的有效性进行了评估;依据地面试验结果,对比地面与空间零重力环境条件下小卫星分离时的运动特性,讨论了仿真模型的正确性,并分析了该类筒式偏心分离过程的力学现象与机理。
Aiming at the problem of eccentric cylinder separation, a single satellite separation is taken as an example to simulate the dynamics of small satellite separation process based on multi-body dynamics theory. The simplified model and the physical model of the translational pair constraints are respectively discussed. The corresponding comparison between the small satellite’s eccentric separation process and the ground simulation test process is discussed, and the effectiveness of the ground simulation test is evaluated. Based on the ground test results The accuracy of the simulation model is discussed and the mechanics and mechanism of the eccentric separation process of the cylinder are analyzed comparing the movement characteristics of the small satellite under the condition of zero gravity environment.