Process Control Loop Tuning Calculator

Calculate PID controller tuning parameters using Ziegler-Nichols, Cohen-Coon, or IMC (Lambda) methods from process step-response data (gain, dead time, time constant).

Inputs

Process gain K

Dead time L (seconds)

Time constant τ (seconds)

Tuning method (0=ZN, 1=CC, 2=IMC)

Controller type (0=P, 1=PI, 2=PID)

Lambda/dead-time ratio (IMC only)

Tab to move between fields

Results

Controller gain Kc

3.6

Integral time Ti (seconds)

Derivative time Td (seconds)

2.5

Integral gain Ki (1/s)0.36

Derivative gain Kd (s)9

Dead-time ratio L/τ0.17

Gain margin estimate1.31

Method NameZiegler-Nichols

How to Use This Calculator

Enter Process gain K, Dead time L (seconds), and Time constant τ (seconds).
Set Tuning method (0=ZN, 1=CC, 2=IMC), Controller type (0=P, 1=PI, 2=PID), and Lambda/dead-time ratio (IMC only).
Review Controller gain Kc, Integral time Ti (seconds), and Derivative time Td (seconds).
Use Integral gain Ki (1/s) and Derivative gain Kd (s) to inform your decision.

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