Ziegler nichols method (PID control)

[seramm91]

hello there, i just want to ask some questions related to PID controller. currently, i have run zumo robot to detect line by using PID controller approach ziegler nichols method..however, by testing P,PI, and PID, P gives the most accurate when zumo follows the line..which is better actually? P? PI?or PID??i kind of newbie about this...

 

[JakeBrodskyPE]

The ZN method is probably the most widely used PID tuning method in industry by far. The truth is that instruments and controls are usually sloppy (inaccuracies, variable dead times, hysteresis, etc.) enough that the differences between these methods rarely matter.

 

[seramm91]

The ZN method is probably the most widely used PID tuning method in industry by far. The truth is that instruments and controls are usually sloppy (inaccuracies, variable dead times, hysteresis, etc.) enough that the differences between these methods rarely matter.

ok thank you