I think it is very difficult to help you further without seeing any actual measurement. You would need to get data of the setpoint value, PID output and motor speed. Step responses to up and down. If you can get that data out of the microcontroller in a text file, that would be ok because I can plot that with matlab.
Easy way to simulate rapid load changes would be to connect a power resistor in series with the motor phases (two resistors in parallel, switch the other one on and off).
BLDC motor and PID loop
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26th March 2012 01:14 AM Thread Starter #21giovaniluigi
This is for medical application.
A bone drill.
Small size and performance are priority.
So, for this task, I have choosed a high quality Maxon motor with high power density.0
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27th March 2012 02:19 PM #22misterT
0
Last edited by misterT; 27th March 2012 at 02:24 PM.
"I cannot prove it because it is too basic. Every mathematician knows that the simplest things are the hardest to prove."
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27th March 2012 08:27 PM Thread Starter #23giovaniluigi
Hi misterT,
Originally Posted by misterT
Thank you for your interest on this topic.
I will do a log file to acquire all data.
I should post the results soon.0
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