基于相移陷波器的磁轴承不平衡振动全频自适应控制#br#

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摘要为全转速范围内消除磁悬浮转子不平衡质量产生的不平衡振动力，提出基于相移陷波器的不平衡振动全频自适应控制方法。直接以构造的轴承力作为相移带通滤波器输入，将滤波器输出反馈至控制系统构成相移陷波器，达到消除振动力目的。该过程无需考虑功放低通特性对同频成分影响；通过对系统灵敏度函数理论分析，在不同转速下自适应调节相移角，实现全转速范围内系统稳定。结果表明，该方法能在全频范围内有效地消除同频轴承力。

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	崔培玲1
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	赵光再1
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	房建成1
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	李海涛1
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关键词 ：磁悬浮转子, 不平衡振动, 相移陷波器, 全频

Abstract：Mass unbalance of high-speed magnetically suspended rotor causes unbalance force, which induces synchronous vibration. To suppress vibration effectively within the operating speed ranges, a method based on a phase-shift notch filter is proposed. The control strategy of the method is that the magnetic bearing force is calculated as the input of band-pass filter and the output of the filter is feedbacked to the original system, in which the low-pass characteristic of power amplifier need not to be considered. Meanwhile, based on the theoretical analysis on the sensitivity function of the overall control system, the stable system in the rotating speed range is achieved based on the adaptive adjustment of the phase shift in the band-pass filter with respect to rotor speeds. Experimental results are given to show the effectiveness of the proposed approach, in which the synchronous magnetic bearing force is reduced within the whole frequency range.

Key words： magnetically suspended rotor unbalance vibration phase-shift notch filter whole frequency range

收稿日期: 2014-04-18 出版日期: 2015-10-25

引用本文:

崔培玲1,2，赵光再1,2，房建成1,2，李海涛1,2. 基于相移陷波器的磁轴承不平衡振动全频自适应控制#br#[J]. 振动与冲击, 2015, 34(20): 16-20.
CUI Pei-ling1,2，ZHAO Guang-zai1,2，FANG Jian-cheng1,2，LI Hai-tao1,2 . Adaptive control of unbalance vibration for magnetic bearings based on phase-shift notch filter within the whole frequency range. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(20): 16-20.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I20/16

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