Bernhard Kubicek

The current Version is not here but at evdz github Am 28.01.2012 21:25 schrieb "bbum" < [email protected] > : > > The current version of the code doesn't compile with...

i have more powerfull PID settings in the code since monday. If I have enough time this evening, I will try this: http://en.wikipedia.org/wiki/Ziegler%E2%80%93Nichols_method

just for reference: the settings derived from a adjusting session in Eindhoven, with non-extrusion: PID_dT 0.05 Kp = 750; Ki =10*PID_dT; Kd = 0; The badly adjusted settings I use...

jc's 144055.36369900 corresponds to a swing period of 52 sec, and a critical gain of 2400.

with j-c's values i get a swing of +-9° while printing at ~220 degree, thin walled with a speed of 80mm/sec and a layer height of 0.1mm

I have a pink-silicon insulated hot end, maybe also worth mentioning

How about using a 4th term in the PID+C. C=factor*Extruded material mm^3/second. PID then could be adjusted at non-extrusion, and C is then adjusted thereafter for the extrusion only?

I spend the last two hours PID-tuning, and have now some reasonables for P,I,D+the proposed C. It works with a +2°-3° variation on my machine, that features the pink silicone...

hurzl: Could you please try the tuning routine described in this post, and submit your results? Maybe my heater is different, I have serial #7 of the first batch, and...

from Peters mail: > I tested your latest build on my machine. > I see some strange effects: +/- 2 degC oscilation. > Strange discretesation of the measured value. He...