Controlling an electric motor having multiple oscillatory elements
US7474065B2 · kind B2 · utility
13Cited by
4References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2006 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Jan 9, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling an electric motor includes providing an electric motor having a plurality of magnetically driven oscillatory elements having differing oscillatory characteristics, and an electromagnet having a coil arranged to drive all of the oscillatory elements. The method includes supplying an electric signal to the electromagnet, which creates a magnetic field that drives the oscillatory elements. The method also includes varying a frequency of the electric signal for individual control of oscillatory movements of the oscillatory elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.