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首页> 外文期刊>Journal of vibration and control: JVC >Static mass imbalance identification and vibration control for rotor of magnetically suspended control moment gyro with active-passive magnetic bearings
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Static mass imbalance identification and vibration control for rotor of magnetically suspended control moment gyro with active-passive magnetic bearings

机译：主动-磁悬浮轴承磁悬浮控制力矩陀螺转子静质量失衡识别与振动控制

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摘要

Identification of the static mass imbalance is critical to the control of magnetically suspended rotors. A static mass imbalance identification method without using the closed-loop transfer function is proposed in this paper. Then the null displacement control of the magnetically suspended rotor is realized by using the identified static mass imbalance. Because null vibration is the control target for the rotor of a magnetically suspended control moment gyro (MSCMG) with active-passive magnetic bearings, a null vibration control method depending on the displacement stiffness is introduced. However, the displacement stiffness of the passive magnetic bearing is hard to obtain accurately. Therefore, the least mean square method is utilized to adjust the uncertain displacement stiffness adaptively according to the centroid acceleration. Simulation results show that adaptive null vibration control based on the static mass imbalance identification can remove the synchronous magnetic bearing force effectively, thus enabling the rotor of the MSCMG with active-passive magnetic bearings to rotate about its initial axis.
机译：静态质量失衡的识别对于磁悬浮转子的控制至关重要。提出了一种不使用闭环传递函数的静态质量不平衡辨识方法。然后，通过使用识别出的静态质量不平衡来实现磁悬浮转子的零位移控制。由于零振动是带有主动-被动磁轴承的磁悬浮控制力矩陀螺（MSCMG）转子的控制目标，因此引入了一种基于位移刚度的零振动控制方法。然而，难以精确地获得被动磁性轴承的位移刚度。因此，采用最小均方方法根据质心加速度自适应地调整不确定的位移刚度。仿真结果表明，基于静质量不平衡识别的自适应零振动控制可以有效地消除同步磁轴承力，从而使带有主动-被动磁轴承的MSCMG转子能够绕其初始轴旋转。

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