The invention discloses a vibration suppression method utilizing root rotation of a flexible part, which can suppress rapid vibration of the flexible part without greatly increasing the complexity ofa system. The method comprises the following steps that firstly, a satellite kinetic model with a flexible rotating part is established according to satellite quality parameters and a modal analysis result of the flexible part; then, the root of the flexible part suppresses flexible vibration through the rotation angular acceleration, the rotation angle and angular speed of the part are fed back,and the root of the flexible part is prevented from being too large in rotation angle and angular speed; and finally, in satellite body attitude control, disturbance generated by movement of the rootof the flexible part is compensated, and high-precision control of the satellite body is guaranteed. The method provided by the invention can achieve the quick suppression of the low-order vibration of the flexible part, achieves the convergence of the rotating motion of the root of the flexible part, and avoids the impact on the pointing of the part. In addition, additional interference caused byrotation of the root of the flexible part is compensated, and the influence on satellite body control is reduced.
本发明公开了一种利用柔性部件根部转动的振动抑制方法,在不需要大量增加系统复杂性的情况下,能够柔性部件快速振动抑制。首先根据卫星质量参数,以及柔性部件模态分析结果,建立带有柔性转动部件的卫星动力学模型。接下来柔性部件根部通过转动角加速度抑制挠性振动,反馈部件本身转动角度与角速度,避免柔性部件根部转动角度与角速度过大。最后在卫星本体姿态控制中,对柔性部件根部运动产生的扰动进行补偿,保证卫星本体高精度控制。本发明提出的方法能够实现柔性部件低阶振动的快速抑制,同时柔性部件根部转动运动收敛,避免对部件指向产生影响。并且对柔性部件根部转动引起的附加干扰进行补偿,减少对卫星本体控制的影响。
Vibration suppression method utilizing root rotation of flexible part
一种利用柔性部件根部转动的振动抑制方法
2021-03-16
Patent
Electronic Resource
Chinese
Active Vibration Suppression in Flexible Spacecraft Attitude Tracking
Online Contents | 1998
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