Ultrasonic-motor driving apparatus
US7023125B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2004 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Oct 5, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ultrasonic-motor driving apparatus includes an ultrasonic motor, a driving unit, and a characteristic storage. The driving unit is detachable from the ultrasonic motor and has a driving circuit for driving the ultrasonic motor. The characteristic storage provided in the ultrasonic motor stores driving characteristic values of a resonant frequency and a drive voltage signal specific to the ultrasonic motor. The driving circuit drives and controls the ultrasonic motor based on the driving characteristic values stored in the characteristic storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.