[sunmix]

Hi, are there any formulas or tutorial that teaches how to tune Motor Velocity and Acceleration as perfect as possible?

[NC Cams]

Try here for starters:

PID tuning
http://www.cnczone.com/forums/showthread.php?t=20927

Servo amp P/S design
http://www.elecdesign.com/Articles/A...7635/7635.html

http://www.a-m-c.com/download/docume...sselection.pdf

Servo motor , servo amp, powersupply sizing for CNC
http://www.rutex.com/pdf/Mystique2.pdf

Servo motor control basics - brushed and brushless
http://www.a-m-c.com/download/docume...l/engnotes.pdf

[Al_The_Man]

For sizing, most of the servo manufactures have sizing software free, Kollmorgen, Allen-Bradley, MotionVillage, MotionOnline.com to name a few.
There is a PID tuning video tutorial on the Galil Motion site by Dr Tal.
MotionOnline also have a down-loadable Servo Hand Book,
Al.

[ger21]

Guys, I think he's asking how to set up the velocity and acceleration in Mach3.

Sunmix, if it's a stepper system, the usual way is by trial and error. gradually increase until you see lost steps, then back off about 20% or more for a safety factor. I'd start with a low accel, and find your max velocity. Then gradually increase the accel.

[sunmix]

Ger21, what do you mean by lost steps?

[ger21]

When you try to go faster than the stepper is capable and it can't keep up. Mach3 thinks it's still moving, but it may lose position or even stop, if pushed too hard.

[sunmix]

I see. So, how does a mechanical backlash affect the motors?