Difference between open loop and closed loop control system

What you will learn here about open loop and closed loop control system
  • Difference between open loop and closed loop control system

Difference between open loop and closed loop control system

Key important Differences between open loop and closed loop control system is given below

Parameter Open loop control system Closed loop control system
1)Defination Open loop system is the control system where output OR control action depends only on the input signal In closed loop system is the control system where output OR control action depends on input signal as well as output response
2)Block diagram Difference between open loop and closed loop control system Difference between open loop and closed loop
3)Error Detector Error Detector is not present Error Detector is present
4)Feedback Feedback is not present Feedback is present
5)Accuracy Less accurate More accurate
6)Stability Stable Less stable
7)Sytem Disturbance System disturbance has more effect on the output of open loop control system System disturbance has very less effect on the output of closed loop control system
8)Cost Cheap Costly
9)Bandwidth Small Large
10)Design Open loop system is easy to design as there is no feedback Closed loop system is complex to design as there is feedback
11)Examples Traffic signal, Washing machine, Bread toaster etc Water level control,Automatic electric iron, Speed control of DC motor etc

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