Electroactive waveform control device and related method
US6040672A · kind A · utility
1Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2260/962
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for reducing vibrational noise generated by the operation of a machine. The machine includes an electric motor that is driven by a drive current generated by a power source. The vibrational noise generated by the operation of the machine induces a waveform in the drive current. An input device monitors the waveform of the drive current and quantifies the induced waveform. A signal processor translates the quantified waveform into a control waveform. A control device adds the control waveform to the drive current, thereby reducing the vibrational noise generated by the machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.