Method for damping rotational oscillations of a load-handling element of a lifting device
US-2018339888-A1 · Nov 29, 2018 · US
Methods for controlling a drive of a crane
US10046953B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10046953-B2 |
| Application number | US-83247510-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 8, 2010 |
| Priority date | Jul 8, 2009 |
| Publication date | Aug 14, 2018 |
| Grant date | Aug 14, 2018 |
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Abstract
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The present invention comprises a method for the control of a drive of a crane, in particular of a slewing gear and/or of a luffing mechanism, wherein a desired movement of the boom tip serves as an input value on the basis of which a control parameter for the control of the drive is calculated, characterized in that the oscillation dynamics of the system comprising the drive and the crane structure are taken into account in the calculation of the control parameter to reduce natural oscillations. The present invention furthermore comprises a method for the control of a hoisting gear of a crane, wherein a desired hoisting movement of the load serves as an input value on the basis of which a control parameter for the control of the drive is calculated.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for the control of a hoisting gear of a crane, the crane including a rope and a load attached thereto, comprising: receiving at a control unit a desired hoisting movement of a load; calculating at the control unit the oscillation dynamics of the hoisting gear; calculating at the control unit the oscillation dynamics of the rope; calculating at the control unit the oscillation dynamics of the load in the direction of the rope; and calculating by the control unit a control parameter to reduce natural oscillations for the control of the drive based on the desired movement of the load, the oscillation dynamics of the hoisting gear, the oscillation dynamics of the rope and the oscillation dynamics of the load in the direction of the rope. 2. A method in accordance with claim 1 , wherein the oscillation dynamics due to the stretchability of the hoist rope are taken into account in the calculation of the control parameter. 3. A method in accordance with claim 1 , wherein the hoisting gear is driven hydraulically and the oscillation dynamics due to the compressibility of the hydraulic fluid are taken into account in the calculation of the control parameter. 4. A method in accordance with claim 1 , wherein the variable rope length and/or the weight of the load suspended at the load rope is/are taken into the calculation of the control parameter. 5. A method in accordance with claim 1 , wherein the control of the hoisting gear is based on a physical model of the crane which describes the hoisting movement of the load in dependence on the control parameter of the hoisting gear, and the control of the hoisting gear is advantageously based on the inversion of the physical model.
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Classifications
- B66C13/063Primary
electrical · CPC title
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- What does patent US10046953B2 cover?
- The present invention comprises a method for the control of a drive of a crane, in particular of a slewing gear and/or of a luffing mechanism, wherein a desired movement of the boom tip serves as an input value on the basis of which a control parameter for the control of the drive is calculated, characterized in that the oscillation dynamics of the system comprising the drive and the crane stru…
- Who is the assignee on this patent?
- Schneider Klaus, Sawodny Oliver, Kuechler Sebastian, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B66C13/063. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 14 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).