Device for attenuating the periodic vibrations of a mechanical structure
US5369348A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1992 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | May 28, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D19/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A device for attenuating the periodic vibrations of a mechanical structure adapted to obtain cancellation of periodic vibrations of rotating machines including at least one transducer, detecting original vibrations, delivering a detected signal, a detector of the periodicity of these vibrations delivering a synchronizing signal, and a control circuit and a transducer generating compensation vibrations which are applied to the mechanical structure. The control circuit includes a circuit for synchronous filtering of the detected signal, controlled by the synchronizing signal and delivering a filtered signal whose frequency spectrum contains only the instaneous fundamental frequency of the detected signal. A circuit for regulating the filtered signal delivers an antivibration-control signal applied to a generating transducer in order to minimize the amplitude of the detected signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.