How a PID controller corrects errors
In short: A PID controller measures the error to its setpoint and corrects it, again and again.
1. The system has a desired value, such as the speed chosen for cruise control. 2. A sensor measures the actual value. 3. The error is the difference between the setpoint and the measured value. 4. The controller corrects with proportional, integral and derivative terms of the error. 5. The correction changes the output and the measured value, and the loop repeats.
Sources: Wikipedia, “PID controller (Wikipedia)” (CC BY-SA 4.0). Simplified: real tuning balances the three terms.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: PID controller
To cite this card, link to https://intellectplus.co.uk/app/how-a-pid-controller-works.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
