I used to work in paper converting(converting a roll of paper into napkins), and machine speed is basically calculated by what you want to do in reverse. To get a continuous sheet speed while a roll of paper is consumed, the diameter of the roll is measured continuously and the rotational speed is adjusted accordingly.
Assuming you are using some sort of programmable controller, and your wind up speed is constant, if you can measure the diameter you know how much you are winding. There are a bunch of ways to accomplish that.
pablo1325 t1_itqlqul wrote
Reply to How can I measure the length of string passing through something? by Dabrush
I used to work in paper converting(converting a roll of paper into napkins), and machine speed is basically calculated by what you want to do in reverse. To get a continuous sheet speed while a roll of paper is consumed, the diameter of the roll is measured continuously and the rotational speed is adjusted accordingly.
Assuming you are using some sort of programmable controller, and your wind up speed is constant, if you can measure the diameter you know how much you are winding. There are a bunch of ways to accomplish that.