feedback loop

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n.
The section of a control system that allows for feedback and self-correction and that adjusts its operation according to differences between the actual output and the desired output.


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A closed transmission path (loop) that includes an active transducer and consists of a forward path, a feedback path, and one or more mixing points arranged to maintain a prescribed relationship between the loop input and output signals. See feedback (iii).

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feedback branch (control systems)
single-loop servomechanism (control systems)
feedback transfer function (control systems)