从波动的角度研究以中心刚体带梁式附件为代表的一类柔性航天器的姿态运动与附件振动的相互作用问题；从航天器的姿态动力学方程及梁的波动方程出发，通过精确考虑附件的端点边界条件，导出了附件振动与航天器姿态及外力矩之间的解析关系式，分析了外力矩和姿态运动对附件振动的影响 From the point of view of the fluctuation, the interaction between the attitude motion of a kind of flexible spacecraft represented by the center rigid body beam attachment and the vibration of the attachment is studied. Based on the attitude dynamics equation of the spacecraft and the wave equation of the beam, The boundary conditions of the appendages are derived and the analytical relationship between the attachment vibration and spacecraft attitude and external moment is deduced. The influence of external moment and attitude motion on attachment vibration is analyzed