The design of an active-adaptive tuned vibration absorber based on magnetorheological elastomer and its vibration attenuation performance

  • Liao G
  • Gong X
  • Kang C
 et al. 
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This paper presents an active–adaptive tuned vibration absorber (AATVA) which is based on
magnetorheological elastomer (MRE). A voice coil motor is attached to a conventional MRE adaptive
tuned vibration absorber (ATVA) to improve its performance. In this study, two feedback types of the
activation force were analyzed and the stability condition was obtained. In order to eliminate the
time delay effect during the signal processing, a phase-lead compensator was incorporated. Based on
the analysis, an MRE AATVA prototype was designed and its dynamic properties were experimentally
investigated. The experimental results demonstrated that its resonant frequency could vary from 11
to 18 Hz and its damping ratio decreased to roughly 0.05 from 0.19 by adding the activation force.
Besides, its vibration reduction abilities at the first two resonant frequencies of the experimental
platform could reach 5.9 dB and 7.9 dB respectively.

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