Hi,
 
I am trying to control a telescope by using three stepper motors, I worked out the transfer function of VR two-phase excitation stepper motor but I need standard values for different types of stepper motors of the following parameters:
 
r stator-circuit resistance
 
L shelf inductance of each phase
 
D viscous damping coefficient
 
J
 
w natural angular frequency
 
K dimensional constant to give a measure of of the inherent damping potential motor
 
Thanks
Kostas Douslatzis

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