Vibration control apparatus for elevator
US5811743A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1995 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Aug 3, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B7/042
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A passenger car of an elevator is transversely vibrated when it is hoisted up or down due to curves in guide rails and level differences at joints of the guide rails. An elevator vibration control apparatus of this invention employs a vibration or displacement sensor attached to a passenger car chamber to detect such transverse vibration of the passenger car. A controller calculates an operation quantity of an actuator to cancel the detected vibration of the passenger car. According to the calculated operation quantity, a servomotor is driven to displace the passenger car in a direction to cancel the transverse vibration and suppress force applied to the passenger car. As a result, the transverse vibration of the passenger car is reduced, and comfortableness of riding in the passenger car is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.