Does this ziegler nichols method works on kettle environment?

[wonchul-kim]

I run your code.

However, it seems that the provided several parameter pairs from the autotune do not work .... I mean those parameters make convergence eventually, however they are not good parameters... and I think the brew type works only well as a good parameter tuning.

I assume that brew is assigned by yourself, right?

I have one more question, there are divisor variables in each method, and I don't think they do not quite follow the table in this website: https://en.wikipedia.org/wiki/Ziegler%E2%80%93Nichols_method

How did you come up those divisors?

[dongfangliu]

@wonchul-kim @hirschmann same question on the devisors. The code's logic is correct.

[diorcety]

I have the same question too. The values seems to come from https://github.com/t0mpr1c3/Arduino-PID-AutoTune-Library/blob/master/PID_AutoTune_v0/PID_AutoTune_v0.cpp#L21. But in this code the table values are multiplied by 0.05 .. https://github.com/t0mpr1c3/Arduino-PID-AutoTune-Library/blob/master/PID_AutoTune_v0/PID_AutoTune_v0.h#L57