Re: Stepper motor interfaces
- From: Mark Borgerson <mborgerson.at.comcast.net>
- Date: Wed, 8 Feb 2006 12:45:28 -0800
In article <1139419228.131732.195830@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
me@xxxxxxxxxxxxxxxxxx says...
That's true, but the software and testing effort needed to get optimum
Mr_D wrote:
Greetings,
I'm looking at an under-hood stepper motor interface application,
however I don't know the full specs of the system yet. In particular,
I'm assuming there are 2 basic approaches one invlovling the micro
provide the actual stepper pulses, and another where a dedicated chip
recieves commands from the micro, and off-loads the micro of the step
pulses.
The stepper pulses are relatively slow. You should be able to
do it with one micro.
performance from a particular motor can be expensive. You need to
have your program control acceleration curves, watch out for resonance
frequencies and a number of other functions. You still have do the
tests and make the decisions with a motor controller, but you don't
have to write and debug the code that implements the functions.
If you have the micro do the pulses, you are adding a somewhat
demanding real-time task to the chores your micro must perform.
Mark Borgerson
Can someone point me to a good stable source for such stepper interface
chips, and perhaps tell me a little about their experience with them?
TIA,
-D
.
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