Drive device and method for moving a vehicle part
US6605911B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2001 |
| Grant date | Aug 12, 2003 |
| Priority date | — |
| Expiry date | Jun 1, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/093
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for adjusting a motor vehicle part between at least two positions and a drive device for executing this process. The motor vehicle part is driven by an electric motor. A pulse signal is generated according to the rotary motion of the electric motor (10) and is supplied to a control unit (24) for controlling the electric motor (10). The instant of input of each signal on the control unit (24) is acquired and between two such input instants at certain extrapolation instants from at least some of these measured instants the current force acting on the motor vehicle part is estimated, this estimate being used as the criterion in the decision whether the electric motor (10) is turned off or reversed or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.