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不平衡质量对磁悬浮CMG转子运动特性的影响分析及实验 被引量:6

Simulation Analysis and Test of the Influence of Imbalance Mass on Magnetically Suspended Rotor
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摘要 研究了磁悬浮控制力矩陀螺系统中具有强陀螺效应的转子(额定转速为20000rpm,额定角动量为200Nms)在不平衡质量影响下的动力学特性。建立了永磁偏置混合磁轴承—转子系统的动力学模型。通过分离法将转子的不平衡质量分配到两个径向磁轴承支承的位置,并分析了系统在相同的控制参数条件下,这两个位置的不平衡质量在不同情况下对磁悬浮转子运动轨迹、振动情况(振动幅值和形状)的影响。仿真结果表明,当两校正面上的不平衡质量矩的相位差相同时,振幅最大,而当相位差为180°时,振幅最小,与同相位时的振动情况相比,振幅减小了65.2%,有利于减小干扰并提高系统的精度,并通过实验测试进行了验证。为提高系统的稳定性、控制精度、转子动平衡要求都提供了的理论依据和参考价值。 Introduced the structure of a control momentum gyroscope (CMG),its flywheel rotor is supported by permanent bias active magnetic bearing in this paper.The rating rotation speed of rotor is 20,000rpm,and its rating angular momentum is 200Nms.We have developed the equation of motion of the rotor supported by magnetic bearing,and considered the geometry relationship between magnetic bearings and position sensors.The effect of unbalance mass on rotor is analyzed,the unbalance mass of a rigid rotor supported by ...
出处 《宇航学报》 EI CAS CSCD 北大核心 2008年第2期585-589,共5页 Journal of Astronautics
基金 民用航天预研(C5120062105)
关键词 控制力矩陀螺 永磁偏置磁轴承 转子动力学 姿态控制 Control moment gyroscope Permanent bias magnetic bearing Rotor dynamics Attitude control
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参考文献7

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