Elevator car assignment conditioned on minimum criteria
US5260526A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1992 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Apr 29, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/403
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An uncertainty filter is provided with input data which is indicative of a fuzzy logic set having basis elements corresponding to elevator cars of an elevator system having degrees of membership associated therewith corresponding to the utility (suitability) of assigning the associated car to service a hall call. The uncertainty filter chooses a car corresponding to the term from the set having the highest degree of membership. The choice can be delayed until; a predetermined amount of time has passed; the degree of membership exceeds a predetermined amount; or the degree of certainty (the degree of membership of the chosen car over the sum of degrees of membership of the other cars) is more than a predetermined amount; or until either the degree of membership or the degree of certainty meets a value which varies as a function of time from when a hall call was registered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.