- #1
KIPP
- 10
- 0
For my master's thesis I've been given the assignment to design an active heave compensation system for a mobile shipboard crane.
The problem is that I have very little information about the crane itself. There's little or no information about the hydraulic cylinders for example, materials used, only vague dimension of the crane, so the design would be mainly theoretical.
So far I've found very little information about mobile crane design, even in the library of the University of Delft, so I was wondering if anyone could help.
The main principle is similar as the one used by Ampelmann in their dynamic platform: http://www.ampelmann.nl/index.php?id=93.
A Motion Reference Unit detects the ship movements, and these signals are processed and used to control the hydraulic cylinders.
My job would be to theoretically calculate the stresses and acceleration forces on the crane tip, and control the hydraulic cylinder of the first crane arm to counter the wave movements.
In order to do so, I'd need more information about how to calculate the stresses on a crane structure.
Any information on the heave compensation principle or on the workings and construction of a mobile crane is more than welcome.
Kind regards,
Wouter
wouterdg@gmail.com
The problem is that I have very little information about the crane itself. There's little or no information about the hydraulic cylinders for example, materials used, only vague dimension of the crane, so the design would be mainly theoretical.
So far I've found very little information about mobile crane design, even in the library of the University of Delft, so I was wondering if anyone could help.
The main principle is similar as the one used by Ampelmann in their dynamic platform: http://www.ampelmann.nl/index.php?id=93.
A Motion Reference Unit detects the ship movements, and these signals are processed and used to control the hydraulic cylinders.
My job would be to theoretically calculate the stresses and acceleration forces on the crane tip, and control the hydraulic cylinder of the first crane arm to counter the wave movements.
In order to do so, I'd need more information about how to calculate the stresses on a crane structure.
Any information on the heave compensation principle or on the workings and construction of a mobile crane is more than welcome.
Kind regards,
Wouter
wouterdg@gmail.com