Stepper motor with positional feed back
Posted by
jlwas2002
on 2002-04-26 16:01:34 UTC
I have an RF 45 mill/drill that will be getting some of those cheap
DRO quill kits like the kind CALAREO sells. I also have some Eastern
Air devices stepper motors, series LA34CKK, which I think are rated
at 620 oz-in. I was tinking of adding these steppers to my mill after
I get the DRO's attached. I could use the DRO position and feed it
back to my home made stepper driver. This should composate for missed
steps, and table back lash. Correct?
I was thinking of using a PIC programmed for microstepping. Program a
sine lookup table for one phase, and constant current for the other.
PWM for current control.I could buy the drivers, but want to learn
more and save some money. Not to mention this is a hobby.
I know this is probably the hard way to do things, and I might as
well go for a servo based system, but I got the steppers for FREE!
What do you all think of my approach. Is it do-able or worth it with
the steppers I got?
DRO quill kits like the kind CALAREO sells. I also have some Eastern
Air devices stepper motors, series LA34CKK, which I think are rated
at 620 oz-in. I was tinking of adding these steppers to my mill after
I get the DRO's attached. I could use the DRO position and feed it
back to my home made stepper driver. This should composate for missed
steps, and table back lash. Correct?
I was thinking of using a PIC programmed for microstepping. Program a
sine lookup table for one phase, and constant current for the other.
PWM for current control.I could buy the drivers, but want to learn
more and save some money. Not to mention this is a hobby.
I know this is probably the hard way to do things, and I might as
well go for a servo based system, but I got the steppers for FREE!
What do you all think of my approach. Is it do-able or worth it with
the steppers I got?