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#25
 
01-08-2008, 09:20 AM
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| the method (Ziegler-Nichols) is an educated guess and actually it is a good one. try searching the net on the method. there are variations on the method. when tuning, take more than one sample of the curve with one setting. sometimes the curve may vary depending on other disturbances. my control system mentor can do these things intuitively. maybe he just got used to tuning every once in a while.  try rewiring them first so the motor is using another axis, like invert x and y for the moment.  |
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