基于虚拟样机的航天器对接转动模拟装置仿真研究

Spacecraft Docking Rotating Simulator Based on Virtual Prototype

综合了计算多体动力学、计算结构力学、碰撞理论等多学科的知识,在 ADAMS/Solver平台上建立了航天器对接试验台滚转和俯仰转动模拟装置对接过程可视化动力学虚拟样机模型,建模过程中实现了 UG-MATLAB-ADAMS-ANSYS 的仿真环境相互集成。利用软件的各自优势完成了转动模拟装置的动力学特性分析;研究了关键性能参数如轴承摩擦系数对整个装置工作性能的影响。数学仿真和虚拟动态仿真的相互验证表明仿真结果是可信的。虚拟仿真结果验证了初始设计的可行性,确立了在物理样机设计中需要考虑的要点,为进一步的转动模拟装置的优化设计提供了设计依据。此外还解决了 ADAMS 仿真中轴承模拟等问题。

With the application of multi-disciplinary knowledge synthetically, such as the calculation of the multi-body dynamics, the structural mechanics, the impact theory and so on, a visual virtual dynamic prototype model about rolling and pitching simulator of spacecraft docking test table in the docking process is built on ADAMS/Solver platform. An integration of UG-MATLAB-ADAMS-ANSYS simulation environment is realized in the process of building prototype models. By combination of the advantages of all software, it is focused on dynamic analysis, and it is also studied the effect degree of the key parameters such as bearing friction coefficient to the whole system. The simulation results are true by the verification mutually of mathematical simulation and virtual dynamic simulation. The virtual simulation results verify the feasibility of the initial structure design, establish the design key points in the physical prototype, and give further design considerations about optimization design of the rotating simulator. The problems in ADAMS are also solved such as simulating bearing etc.