Active damping of a hovering elevator car based on vertical oscillation of the hovering elevator car
US10099894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2013 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Jun 18, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/40
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A system and a method are provided for damping vertical oscillations of an elevator car hovering at an elevator landing. The system includes a sensor, a controller and an elevator machine connected to a traction sheave. The sensor is adapted to provide a sensor signal indicative of rotation of the traction sheave, wherein the rotation of the traction sheave corresponds to the vertical oscillations of the hovering elevator car. The controller is adapted to provide a control signal based on the sensor signal. The elevator machine is adapted to reduce the vertical oscillations of the hovering elevator car by controlling the rotation of the traction sheave based on the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.