Crane control apparatus and method
US7028856B2 · kind B2 · utility
2Cited by
10References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Aug 3, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C13/063
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This crane control apparatus and method with swing control and variable impedance is intended for use with overhead cranes where a line suspended from a moveable hoist suspends a load. It is responsive to operator force applied to the load and uses a control strategy based on estimating the force applied by the operator to the load and, subject to a variable desired load impedance, reacting in response to this estimate. The human pushing force on the load is not measured directly, but is estimated from measurement of the angle of deflection of the line suspending the load and measurement of hoist position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.