非对称大惯量刚性磁悬浮高速转子陀螺效应自适应抑制方法研究

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摘要针对磁悬浮分子泵中非对称大惯量刚性磁悬浮转子高速运行时出现的涡动模态失稳的问题，建立了非对称刚性转子的动力学模型，并提出了一种针对非对称转子的转速自适应的多通道单边滤波PIDC控制方法，在不同的转速段内自动切换反馈通道，通过优化预调参数对转子远离质心一端出现的涡动模态失稳的现象进行相位补偿，仿真结果表明，这种PIDC控制算法简单易用，可以有效解决高速下陀螺效应导致的转子一端进动和章动模态失稳的问题。通过实验验证了该方法的可靠性，分子泵样机平稳升速到21000r/min，样机达到了设计真空性能指标。

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关键词 ：非对称, 陀螺效应, 转速自适应, 多通道单边滤波, PIDC控制

Abstract：A dynamic model for rigid asymmetric rotor is established due to the problem that the instability of vortex motion of unilateral rotor appears when the rigid asymmetric magnetically suspended rotor with large inertia run at high speed. Meanwhile, a speed-adaptive multi-channel unilateral filtering PIDC control method is presented, which can compensate the phase of the instability of vortex motion of the end away from the centroid of the rotor through optimizing the preset parameters by switching cross feedback channel in different rotational speed interval automatically. The simulation results shows that this easily-used method of PIDC control can effectively resolve the instability of precession and nutation modes at one end of the rotor which is caused by gyroscopic effect of the rotor at high speed. Experiment verifies the reliability of this method: the prototype of molecular pump increasing the speed to 21000r/min smoothly achieves the design specification of vacuum performance.

Key words： asymmetric gyroscopic effect speed-adaptive multi-channel unilateral filter PIDC control

收稿日期: 2015-06-15 出版日期: 2016-11-15

引用本文:

沈易霏1,2，韩邦成1,2,郑世强1,2. 非对称大惯量刚性磁悬浮高速转子陀螺效应自适应抑制方法研究[J]. 振动与冲击, 2016, 35(22): 72-79.
SHEN Yifei1,2 HAN Bangcheng1,2 ZHENG Shiqiang1,2. Research on the Adaptive Suppression of Gyroscopic Effect of Rigid Asymmetric Magnetically Suspended High-Speed Rotor with Large Inertia. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(22): 72-79.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2016/V35/I22/72

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