ELI5: Explain Like I'm 5

Control system

A control system is a machine or set of machines that are used to make sure something works the way it is supposed to. Think of it like a system of rules that make sure a machine or other device is doing what it is supposed to do. For example, a business might use a control system to make sure they don't produce too much of a certain product or to make sure employees don't work too much overtime.