Closed Loop Control System

This is a control term.

In any control system you have an 'input', 'process' and 'output'

But there is fourth item that may - or may not - be present. This item is called 'feedback'.

Feedback is a method of letting the input know what the output is doing. This means feedback can affect the way the control system works.

A control system is said to be 'closed loop' if it includes feedback

A control system is said to be 'open loop' of it does not contain feedback.

A Closed Loop Control system is where the output of the system can affect the next decision.


For example a closed loop central heating system coming up to its proper temperature will start to affect the way the boiler is turning off and on based on the current room temperature.

Challenge see if you can find out one extra fact on this topic that we haven't already told you

Click on this link: Closed Loop


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