Hello Im kinda new at this stuff and am having a little trouble. Could you please help me out. I would like to understand how to choose the right drive for my motors or any other motors. I saw this explination on your site.


Heres the formula:
A servo motor data sheet may include graphs for torque in relation to current and speed in relation to voltage, But quite often a motor specification will show only the Kt constant in Nm/Amp or oz-in/Amp and Kv constant in Volts/kRPM. To properly size the drive needed, you need to determin the current and voltage required to produce the desired motion.

The calculation of the current required using the Kt parameter is very straight forward: Divide the required torq by Kt to get the current. For example, If the required torque is 20 lb-in (320 oz-in) and the Kt=32 oz-in/Amp, then 320/32=10Amps. this value is the current that the servo dive has to beable to provide.

This is the specks on the motor I have.
SEM small electric motor, perm magnet DC servo motor
Cont stall torque 3NM Tenv
Max rpm 2400 Volts 142 Pulse amps 30
Tacho 9.5 Volts/1,000 rpm insul F

What do these Aconyms Mean
Nm
Kt
Kv
kRPM
And in your formula I see you use lb-in,or oz-in. My motors dont say this on them is there a formula to convert some of the info on my motors to get this.
Last but not least How do I now what size my power supply needs to be to drive these boards.
Any Info would be greatly appreciated.
Thank you, Scott