Feedback and temperature control

system_model

jeanmarc78 writes, ” An interesting tutorial about PID which includes the description of a simple method to tune the P, I and D parameters” by Charles D. H. Williams

It is important to have an intuitive feel for the ways that feedback can affect a system if you want to design analogue electronic circuits that work well. This document is designed to help you develop such intuition by using a model of a simple system to illustrate some of the principal points that need to be known about systems with feedback. The early sections summarise the behaviours encountered when different types of feedback are used to control the temperature of a simple model of an electric oven. Next some features of real controllers are explained and a simple manual procedure for tuning a PID controller is referred to. If you want to build your own controller there is a circuit diagram with some questions for self-assessment. Finally there is a remark about control theory, some problems, and an interactive simulation of the oven-controller system that can be used to check answers to the problems and get some hands-on experience of how such systems behave.

Via the forum.

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