PID Loop Optimizer
Manage Hundreds of Loops
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Powerful, Flexible, Process Modeling & Tuning Tools


Process Modeling from Available Plant Data

ExperTune's PID Loop Optimizer identifies a process model using advanced frequency response methods. ExperTune software develops a high-fidelity model from a variety of data. Examples of data sets ExperTune software uses to identify process models:

  • Open loop step
  • Closed loop step (controller in automatic)
  • Open loop pulse
  • Closed loop pulse (controller in automatic)
  • Pseudo random data
  • Open loop doublet pulse

See a presentation on "Plant Data to Use For Modeling and PID Tuning."

Force PID Tuner to use a particular model structure.

PID Loop Optimizer automatically chooses the best model structure for your process. Either:

  • Dead time with gain
  • First order with dead time and gain
  • Second order with dead time and gain
  • Second order over-damped with dead time (Imaginary roots) and gain
  • Integrator with dead time
  • Double Integrator with dead time
  • Integrator with first order and dead time
  • Inverse response process or shrink-swell: Integrator with first order, lead time, and dead time

White Paper: Modeling in ExperTune's PID Loop Optimizer and PlantTriage

With PID Loop Optimizer, you can force a model structure, and the software will fit the best parameters to that model.

Video: How to Automatically Find a Model of Your Process

Modeling tools:

  • Drag & Drop Modeling
  • Automatically Select Model Type & Constants
  • Force Model Type as Desired
  • Correct for Non-Linearities
  • Export of DMC Vectors
  • LaPlace and Frequency-Domain Models

ExperTune has over 20 years of experience with modeling and tuning of PID control loops. Reliable, accurate models lead to good tuning results. Use PID Loop Optimizer's tools to get excellent results.

PID Loop Optimizer Finds Process Models Automatically

Case Studies


Optional Drag & Drop Modeling

Drag & Drop modeling let's you manually adjust process models. Make adjustements to your models to get optimal PID Tuning, accurate simulated response to upsets, more accurate response to process noise, and better robustness analysis.

Drag & Drop Modeling

Drag & Drop modeling puts you in control of the model fit. Using any bump test data, drag the model curve to match the actual response curve. Instantly, the software finds a dynamic process model that gives the visually designed response. Use this model to give optimal PID values, simulate responses to upsets and noise.

Use Drag & Drop Modeling to:

  • Tune, using imperfect data
  • Fit many types of bump tests, not just step tests
  • Work with incomplete or very noisy bump test data
  • Make adjustments to the process model
  • See how tuning would change if the process changes

Video Presentation: How to Automatically Find a Model of Your Process

Many Model Types Supported

Drag & Drop Modeling supports modeling of First-Order, Second-Order, and even Integrating control loops.


Find the Best Tuning

Dial in the robustness you want

Get the best performance trade-off with ExperTune's unique Robustness Plot. The Robustness Plot shows how sensitive your loop is to the process changing. Drag the plot with the mouse to set the sensitivity you want. The required PID values and all the ExperTune analysis windows, including the Performance Summary, update—instantly! See the tutorial on Robustness Plots.

Drag the robustness line

Choose the Tuning You Want

  • Minimize Overshoot
  • Respond Quickly
  • Eliminate Errors
  • Reduce Oscillation

Learn more:


Linearize Your Process For Optimal Performance At All Production Rates

Does your process oscillate near one end of the range and respond sluggishly at the other? ExperTune's characterizer, helps you linearize your process, so you get uniform performance across the entire range—run your production at its optimum rather than de-tuning for oscillations.

A characterizer would make this loop easy to control

Use ExperTune's characterizer to linearize:

Learn more:

pH Control Needs Linearization, Too

Because of the inherently non-linear measurement, pH control loops need linearization, also.

Find out more


PID Loop Optimizer Does Much, Much More

Far beyond basic loop tuning, the PID Loop Optimizer Software does much more, including:

Request Pricing Information

For pricing information, please complete this request form.


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