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I NEED TO KNOW IF THERE IS A TRANSFER FUNCTION OF A STEPPER MOTOR LIKE THE DC MOTOR. CAN I USE THIS FUNCTION ( IF EXISTS )TO EXAMINE THE STEP RESPONSE FOR STEPPER MOTOR HAVING HIGH INERTIAL LOAD
It's hard to read, and often considered to be SHOUTING - and, hence, rude.
Yes, there must be a transfer function - as that is just a mathematical expression that relates some stimulus to its resulting response.
How much do you understand about mathematical modelling of dynamic systems?
It would depend on the characteristics of the particular motor, so the manufacturer's data would be the place to start...
See also: www.cs.uiowa.edu/.../
Euclid Research MotionScope demo "excellent illustrations of physical behavior of some real motors"
www.euclidres.com/.../stepper.html