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- TL;DR Summary
- I have a pulley with a radius of 5 mm and a rope with a diameter of 0,75 mm. I've judge that the maximal radius (pulley+cable) is too different of the radius of the pulley and that I cannot neglect this difference.
Hello,
I need to transmit motion between a servo motor and a pulley through a cable. In order to do that, I've screwed a pulley to the servo and fix the cable on both the motor pulley and the pulley. I am working in a scale where the radius of the cable cannot be neglected due to a precision requirement. I actually don't know with which information I am supposed to used in order to calculate the rotation ratio of this system. I'm was thinking that the maximal radius, the combination of the pulley and the cable diameter, was the emplacement where most of the tension seems to be applied on the rope, thus I've used this value on both pulley to find the ratio. Some experimentation proven me wrong. Does someone know how to solve this kind of problems?
I need to transmit motion between a servo motor and a pulley through a cable. In order to do that, I've screwed a pulley to the servo and fix the cable on both the motor pulley and the pulley. I am working in a scale where the radius of the cable cannot be neglected due to a precision requirement. I actually don't know with which information I am supposed to used in order to calculate the rotation ratio of this system. I'm was thinking that the maximal radius, the combination of the pulley and the cable diameter, was the emplacement where most of the tension seems to be applied on the rope, thus I've used this value on both pulley to find the ratio. Some experimentation proven me wrong. Does someone know how to solve this kind of problems?