Ziegler nichols method (PID control)

AI Thread Summary
The Ziegler-Nichols (ZN) method is a widely used approach for tuning PID controllers in industrial applications. In testing with a Zumo robot, the user found that the Proportional (P) controller provided the most accurate line-following performance compared to Proportional-Integral (PI) and Proportional-Integral-Derivative (PID) controllers. Despite this, the differences in performance among these methods are often negligible due to common inaccuracies and variabilities in instruments and controls. The discussion emphasizes that for many applications, the choice between P, PI, and PID may not significantly impact results. Overall, the ZN method remains a standard for PID tuning in various industries.
seramm91
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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...
 
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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.
 
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JakeBrodskyPE said:
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
 

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