Automatic calibration of motor speed loop gain for an elevator motor control
US5880416A · kind A · utility
10Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B19/007
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator controller 7 is provided with logic 48 which automatically calculates a motor speed loop gain (J*) of an elevator motor controller 14 by running the elevator up and down while computing an average of a model speed reference signal W.sub.MRE for the up/down run and while varying J* and determining the value of J* at which the average of W.sub.MRE equals zero within a predetermined tolerance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.