Identification of Damping Ratio for a Rotor-Bearing System Using a Magnetic Bearing Exciter

Yong Jiang Zhu; Ya Zhang; Wei Min Wang; Jian Fei Yao

doi:10.4028/www.scientific.net/AEF.2-3.688

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HomeAdvanced Engineering ForumAdvanced Engineering Forum Vols. 2-3Identification of Damping Ratio for a...

Identification of Damping Ratio for a Rotor-Bearing System Using a Magnetic Bearing Exciter

Abstract:

A magnetic bearing exciter is attached to the rotor-bearing system, to exert an asynchronously rotating force on the rotor to excite the first forward mode. And the half-power point method is developed on the basis of displacement response function, where displacement response data is needed only to identify the frequency and damping. The simulation results show that the method can effectively identify the damping with speed and white noise interference. The experiment results show that the damping radio decreases with increasing rotational speed. It has a good engineering application prospects.

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Periodical:

Advanced Engineering Forum (Volumes 2-3)

Pages:

688-693

DOI:

https://doi.org/10.4028/www.scientific.net/AEF.2-3.688

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Online since:

December 2011

Authors:

Yong Jiang Zhu, Ya Zhang, Wei Min Wang, Jian Fei Yao

Keywords:

Asynchronously Rotating Force, Damping Ratio, Half-Power Point Method, Magnetic Bearing Exciter

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Creative Commons CC BY 4.0

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