Method for monitoring the path of movement of a part
US5834658A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1997 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Jun 24, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P3/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for monitoring the path of movement of a part which is movable toward at least one end position by means of a drive, wherein at least one time period is measured which corresponds to a selectable number of revolutions of a drive shaft and the at least one time period is evaluated and supplies a measure for a running behavior of the part. Immediately after the start of the drive, at least one time period is measured which corresponds to a selectable number of revolutions of the drive shaft, this time period is stored temporarily when the drive shaft has executed a selectable minimum number of revolutions and, during a next start of the drive, the time period corresponding to the selectable number of revolutions of the drive shaft is measured again and is compared with the temporarily stored time period and the drive is stopped or reversed if the temporarily stored time period is exceeded by a selectable measure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.