closed loop


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  • noun a computer control operation in which data is fed back from the output of the controlled device to the controlling loop


  • In computer programming, a loop which repeats itself indefinitely, unless interrupted or stopped by external intervention. An open loop (1) repeats itself a specified number of times.
  • In a control system, a circuit in which a feedback signal and a reference input are compared, in order to control the output quantity. An open loop (2) does not incorporate such feedback.