Motor drive device
US9143065B2 · kind B2 · utility
2Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2011 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Jun 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor drive device inputs two detection signals from a rotation position sensor thereby to detect a rotation position, and controls a voltage to be applied to a motor according to the detected rotation position. The motor drive device has a control unit for outputting a first voltage in a first state in which the square sum of sampling values sampled from the two detection signals is a predetermined value, and outputting a second voltage in a second state in which the square sum is not the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.