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针对太阳翼驱动机构不平稳激励所引起的系统振动问题,分析了驱动激励下柔性太阳翼系统振动响应,发现刚柔耦合作用会大大增强系统在驱动作用下的微弱振动。指出旋转运动控制是太阳翼系统振动控制的关键,提出了一种在驱动机构与太阳翼之间安装旋转磁流变阻尼器的系统振动抑制方案,以振动干扰抑制为控制目标。运用PID算法计算旋转运动控制的阻尼力矩需求,定量地研究了旋转振动控制对柔性太阳翼系统振动抑制效果。仿真结果表明:旋转振动控制能使系统振动的干扰力矩衰减达89%,有效抑制驱动激励下的太阳翼系统振动,对提高航天器的运行稳定性及定位精度具有重要意义。
Aiming at the system vibration problem caused by the unsteady excitation of the solar wing driving mechanism, the vibration response of the flexible solar wing system under driving excitation is analyzed. It is found that the rigid-flexible coupling effect will greatly enhance the system’s weak vibration under the driving action. It is pointed out that the rotary motion control is the key to the vibration control of the solar wing system. A system vibration suppression scheme with a rotating magnetorheological damper installed between the driving mechanism and the solar wing is proposed. The vibration interference suppression is the control target. The PID algorithm is used to calculate the damping moment of rotary motion control. The vibration control effect of rotary vibration control on flexible solar wing system is studied quantitatively. The simulation results show that the rotating vibration control can attenuate the disturbing torque of the system by 89% and effectively restrain the vibration of the solar wing system under the driving excitation, which is of great significance to improve the operational stability and positioning accuracy of the spacecraft.