Sensorless measurement of positioning travel, especially on an electromotively operated parking brake
US7555401B2 · kind B2 · utility
1Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Dec 31, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/2855
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for establishing the position of an actuating unit which is operated by an electric motor, in which a motor speed is determined from a motor model, the speed is integrated over a period of time and the position of the actuating unit is determined by multiplying the result of the integration by a proportionality factor. The motor model takes account of afterrunning of the electric motor at the instant of switch-off. The invention also relates to actuating units, brakes, pumps and transmissions for which the method can be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.