Speed Problem of Bipolar stepper motor

Thread Starter

srikanthala

Joined Jan 7, 2009
2
Hi

I am developing product in automation and i am using L297 & L298 combination.
when i am trying to increase the spped with clk signal the motor is getting struc and it is running well in the lower frequencies (2000Hz). my requirment is to run at 10000Hz.

Please suggest me some solution

Thanks & Regards
Srikanth Ala
 

Alberto

Joined Nov 7, 2008
169
How many steps per turn?
Are you using accelleration ramp?
Are you keeping the current costant? Higher the speed higher the voltage you should apply to compensate the increasing inductance of the motor.

Alberto
 

mik3

Joined Feb 4, 2008
4,843
Stepper motors need some time to move from one step to the other. You can't run the motor faster than this, so you can't increase the frequency as far as you want. Check the motor specifications for this parameter.
 

Thread Starter

srikanthala

Joined Jan 7, 2009
2
Thanks for the reply,

Yes, i gone through some meterial and i undersatnd that, we need to increase like ramp.

The related fomula is:

C0 = 4000;

c(n) = C(n-1) -( 2*c(n-1)/4*n+1));
TACCR0 = C(n);

this will generate the ramp speed with Timer.

Once angain thanks for the Reply.

Regards
Srikanth Ala
 
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