constant speed for crane

Hi all

Can someone teach me how to make the crane move at a constant speed, in any moment? I hope there is neither acceleration nor deceleration, so as long as the crane is moving, it will travel at that speed only.

Thank you so much for your help!

Hendry

Hello Hendry,

I believe I have read about the values to set here in the forum. But I can't remember where. You can still test it on your own. If you build a model with a defined travel distance and set the crane using only one direction you can test typical values 0 and -1. If it does not work for you, you can set the acceleration and deceleration to a very high value. Then there is in error in your results, but it is nearly zero.

Jörg

Hi Jorg

Thanks so much for the help.

Can you please clarify what you meant by "set the crane using only one direction"?

So far, what I tried is that I make all the acceleration and deceleration values become zero (0). Then I only change the value of "Max Speed" of its gantry/hoist/trolley to, say, X m/s. I observed that, within one second, the crane is still able to travel X meter. Is there anything wrong with my method?

Thank you very much!

Hendry

Hello Hendry,

The crane moves with offset,that will use the acceleration/deceleration.You can get rid off by going to the crane’s Taskexecutor tab and set the dropdown option on the right to "Do not travel offsets for load/unload tasks".You should use network node in this case.This should remove the offset travel and crane moves at constant speed.

Hi Sagar

Thank you for your help. But I cannot use network node for my model.

Hendry

Hello Hendry,

a small model to test acceleration and deceleration
TestCraneAcceleratinDeceleration-JV.fsm
Jörg

Hi Jorg!

Thank you so much for the model. Now I can substantiate that the crane is moving at a constant speed.

Hendry!