Open Loop Control System
Open Loop Control System : (ICT) 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. An example of an open loop system is a microwave oven that simply runs for a given time and then stops. It does not care if the food if OK, raw or burnt!
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