Numerator and Denominator Seem to Be Swapped in Machine App

SamW

Hi! I'm using Machine App and I was messing around with the Motor Torque settings under the Axis Settings. I noticed that when I increased the numerator of the gain to 100, the Axis Torque became 100x smaller. And vice versa for the denominator. This should not be the case correct? A numerator is the number above the line in a fraction. Am I doing something wrong here?

Philippe

Hi Sam,

It depends on how you look at it; what you call input and output. So you can look at it from the load side (Axis) to the motor side or in the opposite direction. We chose the convention to look from Axis side then multiply by the numerator to get the motor values. If you look the other way, num and den invert of course.

I hope this clarifies what you see.

SamW

Ah okay, then that makes sense. I didn't think in the perspective of the axis side, thank you for the clarification!