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

ParameterOpen loop control systemClosed loop control system
1)DefinationOpen loop system is the control system where output OR control action depends only on the input signalIn closed loop system is the control system where output OR control action depends on input signal as well as output response
2)Block diagramDifference between open loop and closed loop control systemDifference between open loop and closed loop
3)Error DetectorError Detector is not presentError Detector is present
4)FeedbackFeedback is not presentFeedback is present
5)AccuracyLess accurateMore accurate
6)StabilityStableLess stable
7)Sytem DisturbanceSystem disturbance has more effect on the output of open loop control systemSystem disturbance has very less effect on the output of closed loop control system
8)CostCheapCostly
9)BandwidthSmallLarge
10)DesignOpen loop system is easy to design as there is no feedbackClosed loop system is complex to design as there is feedback
11)ExamplesTraffic signal, Washing machine, Bread toaster etcWater level control,Automatic electric iron, Speed control of DC motor etc

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