I have a couple of linear motors + their drivers and I'm trying to make an X-Y stage for a prototype milling machine, but I'm still a student and in a mecheng stream and haven't sized a power supply before, so not sure how to do it. So far this is my thought process:(adsbygoogle = window.adsbygoogle || []).push({});

Motor specs: 340VDC (max bus voltage), 4.5A continuous current

Driver specs: 24-80VDC, 1A max

Two of each.

Method 1

I simply do a P=Ʃn.IV calculation (n is quantity) and then size it using total watts and spec it through max voltage and max current? This method seems like overkill..

Method 2

Use the force I need this thing to exert to get needed power, then pick values of voltage and current that give this power and that are lower than the maxes. Use these P, V and I values to spec the supply?

(if this one is correct, how do you decide on what the voltage and the current are?)

Thanks in advance.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# How to size a power supply for x-y stage?

**Physics Forums | Science Articles, Homework Help, Discussion**