Re: galil
Posted by
Torsten
on 2004-01-02 10:48:31 UTC
--- In CAD_CAM_EDM_DRO@yahoogroups.com, "jjmefoam" <jjme@a...> wrote:
are others.
It depends on what you are intending to build if you need to have
a hardware solution at all.
A few years back the only resonable way to run a microstep
based system was with the use of hardware cards because of the
speed and smuthness of the signals required.
Today a software only solution is very capable of producing good
results in generating pulse rates for all but the most demanding
applications.
The reason the software approch is so desireable is that you are
not tied to some specific manufacturer with there software to
drive your machine you can instead choose from a large offering
from various venders at a much better price to pick what serves
you best.
When it comes to feedback you will still need a hardware solution
at present even so software enginers are working on this right now
the problem is the computational overhead is huge and it may take
a while before computers will be fast enough to deal with this.
The problem with feedback is that it is comparing where it thinks
it is with where the feedback is telling it, it is.
Now when those answers vary it has to make a decision on wether
this is a reasonal defiation or if there is some foult somewhere
and what to do about it.
Not a truly satisfying scenario by any means.
Remember the old saying when you go out into the desert ether take
on compass or take three.
Not much sense in taking two because if they showed different results
you would never now wich one was wrong.
I belive that feedback in the traditional way will be a thing of the
past soon there will be electronic means of determining if a move
was sucessful within the drivers feedback system.
Untill then I will rely on plenty of tourqe to get me there.:-)
Good Luck
> what are the alternitives to a galil card. manufacturers?One generic alternative is the Servo to go cards i am sure there
>
> thanks
> EZ
are others.
It depends on what you are intending to build if you need to have
a hardware solution at all.
A few years back the only resonable way to run a microstep
based system was with the use of hardware cards because of the
speed and smuthness of the signals required.
Today a software only solution is very capable of producing good
results in generating pulse rates for all but the most demanding
applications.
The reason the software approch is so desireable is that you are
not tied to some specific manufacturer with there software to
drive your machine you can instead choose from a large offering
from various venders at a much better price to pick what serves
you best.
When it comes to feedback you will still need a hardware solution
at present even so software enginers are working on this right now
the problem is the computational overhead is huge and it may take
a while before computers will be fast enough to deal with this.
The problem with feedback is that it is comparing where it thinks
it is with where the feedback is telling it, it is.
Now when those answers vary it has to make a decision on wether
this is a reasonal defiation or if there is some foult somewhere
and what to do about it.
Not a truly satisfying scenario by any means.
Remember the old saying when you go out into the desert ether take
on compass or take three.
Not much sense in taking two because if they showed different results
you would never now wich one was wrong.
I belive that feedback in the traditional way will be a thing of the
past soon there will be electronic means of determining if a move
was sucessful within the drivers feedback system.
Untill then I will rely on plenty of tourqe to get me there.:-)
Good Luck