Ziegler-Nichols Method - Michigan Technological University
https://pages.mtu.edu/~tbco/cm416/zn.html
Ziegler-Nichols Method: First, note whether the required proportional control gain is positive or negative. To do so, step the input u up (increased) a little, under manual control, to see if the resulting steady state value of the process output has also moved up (increased).
DA: 98 PA: 76 MOZ Rank: 56