blockPIDDerivativeTime

Identify the derivative time of a PID controller
Diagram of PIDDerivativeTimeOpen the diagram
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Information

This block calculates the derivative time of a PID controller as

Td = 0.5 L T/(0.3 L + T),

where T is the time constant of the first-order plus time-delay (FOPTD) model and L is the time delay of the FOPTD model.

References

Åström, Karl Johan and Tore Hägglund (2004) "Revisiting the Ziegler–Nichols step response method for PID control." Journal of Process Control 14.6 (2004): 635-650.

Connectors

TypeNameDefaultDescription
Buildings.Controls.OBC.CDL.Interfaces.RealInputTTime constant of a first-order plus time-delay (FOPTD) model
Buildings.Controls.OBC.CDL.Interfaces.RealInputLTime delay of the FOPTD model
Buildings.Controls.OBC.CDL.Interfaces.RealOutputTdTime constant signal for the derivative term

Revisions

  • June 1, 2022, by Sen Huang:
    First implementation.