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将带梁式柔性附件航天器的附件振动作为波动研究。将附件按物理特性的差异划分成单元,弹性波在每一个单元内传播,并在结点处反射、散射。通过考虑单元间的边界条件可以得到姿态动力学的解析模型,并由此可以获得外扰动和姿态角到附件弹性位移之间的传递特性。与传统的以混合坐标表示的模型相比,此模型能够获得更全面、更精确的姿态动力学特性。
Vibration of Accessories of Beam Flexible Attachment Spacecraft as Vibration. Divide the attachment into units according to the differences in physical characteristics. Elastic waves propagate within each unit and are reflected and scattered at the junction. The analytical model of attitude dynamics can be obtained by considering the boundary conditions between cells and the transfer characteristics between external disturbance and attitude angle to attachment elastic displacement can be obtained. Compared with the traditional model with mixed coordinates, the model can obtain more comprehensive and accurate attitude dynamics.