PID Loop Simulator
Description| How it works| Derivative on PV| Process Model| Robustness| PID Tuning| PID EquationsThis tool simulates a control loop consisting of a first order process with deadtime and a PID controller.
Download
.xls file (118 KB) or .zip file (27 KB)How to use
The process is specified by the process gain, time constant and dead time (see the Process Model page for more details). The PID controller has 3 parameters: gain, integral and derivative. Key in these values into the appropriate cells. If the integral time is keyed in as 0, the integral term is ignored.The response to a step change in the set point is displayed in the chart.
The screenshot below shows an example of the inputs and the output chart.
Feedback and Contributions from Visitors
The PID Simulator tool has been the most downloaded tool on this site and I am both happy and grateful to recieve lot of positive feedback about it from the visitors to the site.Torcuato Fernandez pointed out an error in original version, which has since has been corrected. I would like to thank Torcuato for pointing out the error.
Jose Maria, has shared some of his work with me and has kindly agreed to let me share it with others through this site. He has added scrollbars to the tool, which assist the user understand how the controller settings affect the loop.
Download the file here.
I also get a lot of queries on the form of the controller equation used in this tool - for a discussion of the different equations and to download the tool containing the ideal form of the PID equation, visit the PID Equations page.
I look forward to getting more great suggestions and comments. Thank you! :)
More Control Simulators
Simulation of On Off ControlPI Control of First Order Process
PI Control of Integrating Process
Simulation of a Model Predictive Controller (MPC)
Also See:
Generating Instrument Loop Drawings in ExcelLaplace to Time Domain Convertor
Bode Plot Generator
Nyquist Plot Generator