Thread: Stepper Motor Question
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Jim Thompson[_3_] Jim Thompson[_3_] is offline
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Default Stepper Motor Question
On Sat, 02 Oct 2010 23:00:45 GMT, (Nico Coesel)
wrote:

Jim Thompson
wrote:

_Vague_ Stepper Motor Question:

What is the maximum rate one might expect to step from phase to phase?

Depends on the maximum dissipation. I did manage to get a big stepper
(2.5A) to about 6000 steps/s (1800 rpm) with a single ended driver.
But it was necessary to ramp the speed up & down. Nowadays I think I
would use a servo motor with a position encoder or at least drive the
steppers with a full bridge PWM and feed the motor sine waves unless
halted at some point. The biggest problem with steppers is that you
can miss a step and you have no way of knowing unless you add the
encoder.

OK. I'd guess my thoughts of adding 100ns safety against H-bridge
crowbar-overlap wouldn't be a speed-limiting idea :-)

(This is an RFQ with less than marvelous explanations :-)

...Jim Thompson
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