Method and device for controlling a lifting load
US8584808B2 · kind B2 · utility
3Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2009 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Jan 11, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/285
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A control method implemented in a variable speed drive for controlling a lifting load, the load control being carried out according to a first control profile that includes the following: accelerating the load with a view to reaching a first speed, decelerating the load upon receiving a deceleration order, and stopping the load. When the load receives a deceleration order when it is at a current speed lower than the first speed, the method determines a second speed lower than the first speed and higher than the current speed, the second speed having an optimal value for minimizing the load running time until stopping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.