The PID Tuner is a software tool to help you tune a PID controller optimally, using a step-by-step method. Download this Quick Start guide to get started.
|PID Tuner: Features||Full|
|Option to import step data (.csv / .tsv / .txt)|
|Online real-time trending|
|Automatic identification experiment|
|Download PID settings to PLC|
The OPC Server Simulator, simulates a closed loop system with a first order system and PID controller. The closed loop system is implemented discrete with an update rate of 10 Hz. The following tag are available: PMV, MV, PV, SP, Kp, Ti and Td. Use it to test OC connections and to test the PID Tuner.
|OPC Simulator: Features||Free|
|Simulates a discrete closed loop system with 10 Hz|
|The following tags are available: PMV, MV, PV, SP, Kp, Ti|
|Except PV all tags are read- writable|
Case studies with the PID Tuner
Software and hardware setup
The control task was excuted by an Allen Bradley PLC. The PID Tuner software was installed on the same Windows PC that was used to program the PLC. The PID Tuner communicated with the PLC via the OPC server of Rockwell Automation (RSLinx Classic OEM).
Tuning procedure and result
The PID Tuner was set up to execute its tuning in a safe way: the tick box PVmax was used to ensure that control would resume in feedback mode should the pressure exceed a predefined limit. A short step experiment was executed by the PID Tuner, followed by a retuning of the PID controller. The figure below shows the comparison of the closed loop response with the 'old' tuning and the 'optimised' tuning. Clearly, the 'old' tuning was indeed slow compared to what it could be. The new settings were downloaded to the PID controller and they worked out as expected: the pressure returned to setpoint at least a factor 5 faster.
We provide consultancy services, combined with implementation and testing of control algorithms or changes to the control algorithm. To get an idea of what we do and what it can bring, please go through some of our projects listed below. Almost every project description presents (scaled) measurements to show proof of the improvements that we realised.
- Modeling of irrigation and drainage canals for controller design, 1999
- Simple water level controller for irrigation and drainage canals, 1999
- Robust Mould Level Control, ACC 2005
- Continuous nonlinear model predictive control of a hybrid water system, 2013
- Nonlinear Model Predictive Control of Walking Beam Furnaces, presented at METEC InSteelCon 2011