A proportional–integral–derivative controller (PID controller or three-term controller) is a control loop mechanism employing feedback that is widely used in industrial control systems and a variety of other applications requiring continuously modulated control. A PID controller continuously calculates an error value, e(t), as the difference between a desired setpoint (SP) and a measured process variable (PV) and applies a correction based on proportional, integral, and derivative terms (denoted P, I, and D respectively), hence the name.
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Proportional-Integral-Derivative (PID) Controller
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Understanding PID Control, Part 1: What is PID Control?
11 min
Beginner
Video
Theory
Chances are you’ve interacted with something that uses a form of this control law, even if you weren’t aware of it. That’s why it is worth learning a bit more about what this control law is...
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Understanding PID Control, Part 5: Three Ways to Build a Model
13 min
Beginner
Video
Theory
Tuning a PID controller requires that you have a representation of the system you’re trying to control. This could be the physical hardware or a mathematical representation of that hardware...
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Understanding PID Control, Part 7: Important PID Concepts
12 min
Beginner
Video
Theory
Now that you ’ve gotten an overview of PID tuning techniques, this video moves on to discussing two important concepts in PID control: cascaded loops and discrete systems. Both concepts are...
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Improving the Beginner's PID - Introduction
30 min
Beginner
Article / Blog
Application
In conjunction with the release of the new Arduino PID Library Brett has released this series of posts that explain his PID code. He start's with what he call's “The Beginner’s PID.” He...
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Understanding PID Control, Part 6: Manual and Automatic Tuning Methods
13 min
Beginner
Video
Theory
The previous video showed three different approaches to developing a mathematical model of your physical system. Now that we have this model, we can use it to tune a PID controller that will...
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Understanding PID Control, Part 4: A PID Tuning Guide
12 min
Beginner
Video
Theory
It can be difficult to navigate all the resources that promise to explain the secrets of PID tuning. Some proclaim that PID tuning is an art that requires finesse and experience, while...
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Introduction: PID Controller Design
30 min
Beginner
Article / Blog
Application
In this tutorial we will introduce a simple, yet versatile, feedback compensator structure: the Proportional-Integral-Derivative (PID) controller. The PID controller is widely employed...
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Regulatory PID (Polish)
18 min
Beginner
Video
Theory
W tym odcinku, opisze wam podstawy działania regulatorów PID.
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Virtual Lab for a Two-tanks system
Beginner
Virtual Lab
Application
This is a virtual lab for a two-tank system that can be used for modelling and control learing/teaching purposes. Open-loop tests and closed-loop simulatons based on PI control or PI plus...
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Quanser QUBE-Servo 2: Low-cost Teaching Platform for Controls
Beginner
Hardware
Application
The Quanser QUBE-Servo 2 is a fully integrated, modular servomotor lab experiment designed for teaching mechatronics and control concepts at the undergraduate level. Ideal for teaching speed...
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Peter Ponders PID - Introduction
3 min
Beginner
Video
Theory
The purpose of this video is to inform the viewer about what to expect. My videos go much deeper than the typical videos. They are geared for graduate st...
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Peter Ponders PID - Controlling non-integrating single pole system. Part 1 ...
10 min
Beginner
Video
Theory
Part 1 shows why P only control shouldn't be used because the set point or target is never reached.Part 2 shows why I only control shouldn't be used because ...
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Peter Ponders PID. Second Order Plus Dead Time , SOPDT, Temperature Control,...
12 min
Beginner
Video
Theory
In this video I derive the equations for the controller gains and a low pass filter for a SOPDT system with a very long dead time To make the simulation mo...
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Control Bootcamp: Cruise Control Example with Proportional-Integral (PI) co...
23 min
Beginner
Video
Theory
In this video, we show that introducing integral control reduces the steady-state tracking error to zero in the cruise control example. We also use a more sophisticated model for the...
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Direct Synthesis for PID Controller Design
12 min
Beginner
Video
Theory
What tuning parameters should you choose for your controller? The Direct Synthesis Model is one method control engineers use today to evaluate controller par...
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Peter Ponders PID - Controlling an Under Damp Mass and Spring System
24 min
Beginner
Video
Theory
Demonstrates:How to calculate the PID gains. The importance of the derivative gain. How to simulate the mass and spring systemControl limitations based on s...
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Understanding PID Control, Part 2: Expanding Beyond a Simple Integral
10 min
Beginner
Video
Theory
The first video in this series described a PID controller, and it showed how each of the three branches help control your system.That seemed simple enough and appeared to work. However, in...
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Peter Ponders PID - Why PID with 2nd Derivative Gain?
27 min
Beginner
Video
Theory
If you have ever tuned a hydraulic system and wondered why PID control didn't work better than PI control the answer is here. Since the 1980s people have kn...
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Peter Ponders PID - Integrated Time Absolute Error - 4 Pole example
17 min
Beginner
Video
Theory
This video shows how to calculate the coefficients for a 4 pole ITAE and how to use the 4 pole ITAE to calculate closed loop controller gains.
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Direct Design Example for PID Controller
7 min
Beginner
Video
Theory
I go through an example problem of how we can use Direct Design (also called Direct Synthesis) to determine the tuning parameters for a PID controller, given...
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Peter Ponders PID-Fuzzy Logic vs PID
10 min
Beginner
Video
Theory
There are many academic and engineering papers showing how good fuzzy logic control is relative to PID control. Every FL vs PID paper I have seen compares...
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Peter Ponders PID - T0P1 Part 4, Misc Topics
20 min
Beginner
Video
Theory
This video covers another way to compute symbolic gains, the difference between having the P gain act on the error or just the feedback, extending bandwidt...
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An interactive feedforward tool for FeedForward Control
Beginner
App
Application
This interactive software tool is focused on basic and advanced concepts of feedforward control.
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Direct Synthesis Method Numerator Dynamics Problem
10 min
Beginner
Video
Theory
I walk through how to design a PID feedback controller when given a second order process with numerator dynamics, using the Direct Synthesis Method.
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Peter Ponders PID, Natural Frequency vs Frequency of Acceleration
9 min
Beginner
Video
Theory
This video is intended for servo hydraulic system designers and those that program hydraulic servo systems but it does show how several of the techniques sho...
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