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为了满足空间探测任务的要求,需采用轻质的伸杆机构支撑各类探测载荷远离卫星本体以避免平台剩磁对空间测量信息的干扰,而挠性伸杆的弹性振动会耦合影响到卫星本体,从而降低卫星本体的姿态控制精度.考虑到挠性附件振动的复杂性及其对航天器本体的耦合影响,采用最优指令整形抑制挠性伸杆的低阶模态振动,并在本体控制中设计自适应扰动抑制滤波器进一步抵消挠性伸杆的残余振动对本体的干扰作用.仿真结果表明,此复合振动控制方法可显著的提高此小卫星的姿态控制精度.
In order to meet the requirements of the space exploration mission, a lightweight extension mechanism needs to support all kinds of detection loads away from the satellite body to avoid the interference of the platform residual magnetism to the space measurement information. The elastic vibration of the flexible extension rod will be coupled to affect the satellite body , So as to reduce the attitude control precision of the satellite body.According to the complexity of the vibration of the flexible attachment and its coupling effect on the spacecraft body, the optimal order shaping is used to restrain the low-order mode vibration of the flexible rod, The adaptive disturbance rejection filter is designed to further counteract the interference of the residual vibration of the flexible extension rod to the body.The simulation results show that this composite vibration control method can significantly improve the attitude control precision of this small satellite.