Speed detection apparatus
US4716535A · kind A · utility
8Cited by
10References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1985 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Apr 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A speed detection apparatus for detecting speed of electric equipment on the basis of a sampling interval so as to stably operate a variable speed control system connected thereto. The sampling interval is varied in accordance with an input current to be supplied to the electric equipment to compensate for different current pulsations due to different modes of operation and the torques produced at different load conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.