𝔖 Bobbio Scriptorium
✦   LIBER   ✦

AN ACTIVE MAXIMUM POWER ABSORBER FOR THE REDUCTION OF NOISE AND VIBRATION

✍ Scribed by N. Hirami

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
559 KB
Volume
200
Category
Article
ISSN
0022-460X

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✦ Synopsis

The objective of this work is to assemble and test a non-application-specific active controller for the reduction of noise and vibration and discuss its potential for practical applications. The power absorbed by the controller is taken as a cost function to be maximized. The background theory and essential strategy are reported in the companion paper [1], where it was shown that power absorption maximization within the time taken for a wave emitted by the controller to come back to the control point, i.e., within a single sing-around time, is promising. A maximum power absorber based on this strategy was developed for experimental purposes and the (same) device was applied to three different vibration problems, a string, an acoustic tube and a plate model. These experiments confirmed that the absorber attenuates vibration from a variety of problems effectively, suggesting that the prospects for this controller are encouraging.

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