Method and apparatus for adjusting an elevator car based on stored horizontal displacement and acceleration information
US5544721A · kind A · utility
11Cited by
22References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Jul 25, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B7/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Elevator horizontal vibrations are actively controlled by retrieving data stored in memory indicative of the out-of-straightness of the elevator car's guide rails. The stored data is compiled during a learning run by summing the car's relative displacement with respect to the rail with a doubly integrated acceleration signal indicative of the car's deviation from true vertical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.