FI20001427A - Procedure for checking the movements of a crane - Google Patents
Procedure for checking the movements of a crane Download PDFInfo
- Publication number
- FI20001427A FI20001427A FI20001427A FI20001427A FI20001427A FI 20001427 A FI20001427 A FI 20001427A FI 20001427 A FI20001427 A FI 20001427A FI 20001427 A FI20001427 A FI 20001427A FI 20001427 A FI20001427 A FI 20001427A
- Authority
- FI
- Finland
- Prior art keywords
- speed
- desired value
- vdiff
- movements
- filtered
- Prior art date
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- Control And Safety Of Cranes (AREA)
Abstract
The invention relates to a method by means of which the movements of a lifting crane are controlled, whereby the displacement and rotative movements are according to said method provided by means of a frequency converter and a squirrel-cage motor, said motor being controlled by means of a control unit from which a desired value for the speed is carried to said frequency converter via programmable logic, whereby the desired speed value Vref from said control unit is digitally filtered in a micro- processor based apparatus in such a way that said filtering changes as a function of the difference Vdiff between said desired value Vref for the speed and the actual value Vact of the speed of the lifting crane, in the following way: when Vdiff is small, said desired value of the speed is filtered strongly, when Vdiff is large, the filtering is reduced rapidly, and when the desired value Vref of the speed and the actual value Vact of the speed cross each other, that is, the difference Vdiff changes sign, the actual value Vact of the speed is set to the filtered desired value of the speed. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20001427A FI109117B (en) | 2000-06-15 | 2000-06-15 | Method for controlling the movements of a lifting crane |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20001427 | 2000-06-15 | ||
FI20001427A FI109117B (en) | 2000-06-15 | 2000-06-15 | Method for controlling the movements of a lifting crane |
Publications (3)
Publication Number | Publication Date |
---|---|
FI20001427A0 FI20001427A0 (en) | 2000-06-15 |
FI20001427A true FI20001427A (en) | 2001-12-16 |
FI109117B FI109117B (en) | 2002-05-31 |
Family
ID=8558567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI20001427A FI109117B (en) | 2000-06-15 | 2000-06-15 | Method for controlling the movements of a lifting crane |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI109117B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9913437B2 (en) | 2015-04-10 | 2018-03-13 | Deere & Company | Velocity-based control of end effector |
US10480541B2 (en) | 2017-07-06 | 2019-11-19 | Deere & Company | Intelligent boom control with rapid system cycling |
US10844572B2 (en) | 2018-04-25 | 2020-11-24 | Deere & Company | Method of controlling movement of an intelligent boom |
-
2000
- 2000-06-15 FI FI20001427A patent/FI109117B/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9913437B2 (en) | 2015-04-10 | 2018-03-13 | Deere & Company | Velocity-based control of end effector |
US10480541B2 (en) | 2017-07-06 | 2019-11-19 | Deere & Company | Intelligent boom control with rapid system cycling |
US10844572B2 (en) | 2018-04-25 | 2020-11-24 | Deere & Company | Method of controlling movement of an intelligent boom |
Also Published As
Publication number | Publication date |
---|---|
FI109117B (en) | 2002-05-31 |
FI20001427A0 (en) | 2000-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Transfer of assignment of patent |
Owner name: KONECRANES GLOBAL OY |
|
MM | Patent lapsed |