Journal
JOURNAL OF VIBRATION AND CONTROL
Volume 27, Issue 21-22, Pages 2420-2431Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546320960891
Keywords
Magnetic suspension system; dynamic vibration absorber; modal frequency; vibration suppression
Categories
Funding
- National Natural Science Foundation of China [51875275]
- Six Talent Peaks Project in Jiangsu Province [JNHB-041]
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This article introduces the design and experimental research of a magnetic suspension dynamic vibration absorber. By establishing a theoretical model, designing a specific structure, conducting simulation studies, and experimental verification, it is found that the magnetic suspension dynamic vibration absorber can effectively reduce vibration within a certain frequency range.
In this article, a magnetic suspension technique was introduced into the field of vibration absorption. Using the advantage of adjustable control parameters of a magnetic suspension system, a type of a magnetic suspension dynamic vibration absorber that can achieve broadband vibration suppression was designed. First, the theoretical model of a magnetic suspension dynamic vibration absorber was established. Then, the cantilever beam with sinusoidal excitation is seen as the main system of vibration suppression; combined with the fixed point theory (Seto K (2013)Dynamic Vibration Absorber and its Application. Mechanic Industry Press), the specific structure of the magnetic suspension dynamic vibration absorber was designed. Based on that, the simulation study of vibration suppression performance of the magnetic suspension dynamic vibration absorber was carried out. The results indicated that the vibration of the main system at the 1st modal frequency was reduced by 65.38% under the action of the magnetic suspension dynamic vibration absorber, compared with that without the action of the magnetic suspension dynamic vibration absorber. Furthermore, the vibration of the main system can be suppressed in the frequency band of [16 Hz, 32 Hz]. Finally, a vibration test rig of the magnetic suspension dynamic vibration absorber was built up for experimental study. And the results showed that the absorber can decrease the vibration of the main system by 43.03% at the 1st modal frequency compared with that without the action of magnetic suspension dynamic vibration absorber and had a certain suppression effect (decrease varies from 0 to 43.03%) on the vibration of the main system in the frequency band of [20 Hz, 32 Hz].
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