Re: Stepper Motor Max Practical Speed
Originally Posted by
CitizenOfDreams
+1 to everything Gerry and Peter just said. Pretty much all you can do with a stepper is find the point where it stalls and back off to make a safety margin. And 9 times out of 10 you would wish it could spin faster.
Actually after working with an engineer the last couple of weeks developing a model for stepper motor motion design, I have to say I have a renewed respect for steppers. Everything we thought we knew when we started has been turned upside down. Using a carefully inertia matched design and keeping them in their element, their low down torque can be harnessed to achieve amazing results. I'm just annoyed it would be such a major job to retrofit my plasma table to the design. We are talking about a 460% improvement in acceleration which means we can get to > 400 inches per minute in < 0.5 seconds. In fact I designed one axis that could get to 800 inchs per minute in 0.5 seconds. I know we don't have cutting forces to contend with but with plasma acceleration is king!
Rod Webster
www.vehiclemods.net.au