RE: [rtl] Help on telescope control by stepper motor

[Basham, Richard R]

Try looking for the specs at the Parker web site.  They may have those specs readily available for various motor sizes.  They are at www.parker.com -----Original Message----- From: cop00kcd [mailto:[EMAIL PROTECTED]] Sent: Saturday, August 18, 2001 9:57 AM To: [EMAIL PROTECTED] Subject: [rtl] Help on telescope control by stepper motor 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