Re: ATM servo vs stepper motors

["Antonio de Ugarte" <ugarte@retemail.es>]

So when should I use servo motors and when steppers?

----- Original Message ----- 
From: "Mel Bartels" <mbartels@efn.org>
To: "Antonio de Ugarte" <ugarte@retemail.es>
Cc: <atm@shore.net>
Sent: Wednesday, June 06, 2001 12:41 AM
Subject: Re: ATM servo vs stepper motors


> 
> Does this mean that if I use a servo motor I would not need to buy
> encoders?
> 
> The encoders on a servo motor may or may not be suitable to use as the
> mounts encoders.  If you have a drive system capable of slippage, either
> on purpose or on accident, then you will need external encoders to truly
> close the loop. So you end up with two sets of encoders: one going to
> the servo control box and one going to an encoder interface box.
> 
> Mel Bartels
>