基于动力学递推算法的绳系卫星系统刚柔耦合多体模型

钟睿

doi:10.13700/j.bh.1001-5965.2014.0525

基于动力学递推算法的绳系卫星系统刚柔耦合多体模型

doi: 10.13700/j.bh.1001-5965.2014.0525

钟睿^,

北京航空航天大学宇航学院, 北京 100191

基金项目: 中央高校基本科研业务费专项资金(YWF-14-YHXY-21)

详细信息

通讯作者:
钟睿(1984—),男,江西赣州人,讲师,zhongruia@163.com,主要研究方向为空间多体动力学、绳系卫星动力学与控制.

中图分类号: V474.292
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- 被引次数: 0
出版历程
- 收稿日期: 2014-08-25
- 修回日期: 2014-09-09
- 网络出版日期: 2015-07-20

Rigid-flexible coupling multibody model for the tethered satellite system based on recursive dynamics algorithm

ZHONG Rui^,

School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 利用动力学递推算法建立了空间绳系卫星系统(TSS)的铰接柔性杆动力学模型.所研究的绳系系统包含两颗刚体绳端卫星和一段连接两颗卫星的柔绳,柔绳离散为一系列球铰连接的弹性杆,考虑杆不均匀的纵向一维形变,并利用球铰的运动模拟柔绳的弯曲和扭转;然后基于递推算法推导得出了该刚柔混合离散模型的动力学方程.数值仿真结果表明:所建立的绳系卫星系统模型能够很好地模拟空间系绳的各向摆振和扭转,此外,递推算法的引入能够有效地减少离散模型动力学方程的维数,从而大幅减少计算量.
- 绳系卫星系统(TSS) /
- 多体系统 /
- 动力学递推算法 /
- 刚柔混合模型 /
- 动力学仿真
Abstract: A multibody dynamics model of hinged flexible rods was established for the spatial tethered satellite system (TSS) based on the recursive dynamics algorithm. The system was consisted of two rigid end-satellites and a flexible tether connecting them. In the model, the tether was discretized into a series of flexible rods connected by spherical hinges and the non-uniform longitude deformations of the rods were considered, whereas the bending and torsion of the tether were simulated by the motion of the spherical hinges. Then, the equation of motion of the rigid-flexible coupling multibody model was derived based on the recursive dynamics algorithm. The simulation results prove the efficiency of the proposed model in simulation spatial motion of the TSS, including tether vibrations and oscillations in different directions. The introduction of the recursive dynamics algorithm effectively decreases the dimension of the discretized model and therefore reduces the computational efforts sharply.
- tethered satellite system (TSS) /
- multi-body system /
- recursive dynamics algorithm /
- rigid-flexible coupling model /
- dynamics simulation

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参考文献(21)

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