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对通过阻尼机构连接的多柔体航天器动力学问题进行研究,考察的系统由航天器本体、若干六自由度刚性阻尼平台以及固连于阻尼平台的大柔性附件构成,阻尼平台与航天器本体之间以弹性-阻尼装置连接,为典型的多柔体系统.以混合坐标描述系统的运动,利用Kane方程建立了具有较强通用性且有利于系统控制器设计的含有约束阻尼的动力学模型.数值仿真结果表明,阻尼器可有效衰减柔性附件的振动,有利于星体受扰后的快速稳定.
The dynamics of multi-flexible spacecraft connected by a damping mechanism is studied and investigated. The system is composed of a spacecraft body, rigid six-degree-of-freedom damping platform and a large flexible attachment fixed to the damping platform. The damping platform and the spacecraft body Which is a typical flexible multi-body system.Mixed coordinates are used to describe the motion of the system, and a kinematic model with restraint damping that is more general and conducive to the design of the system controller is established by Kane equation The numerical simulation results show that the damper can effectively attenuate the vibration of the flexible attachment, which is beneficial to the fast and stable disturbance of the star body.