Active control system and method for reducing engine noise and vibration
US4808863A · kind A · utility
12Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Jul 15, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D19/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Noise and vibration in a structure is reduced through application to the structure of an oscillatory torque. An electromechanical energy converter provides the oscillatory torque when the input signal to the electromechanical energy converter has a frequency and harmonics thereof required to counteract the noise and vibration desired to be attenuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.