Webster's Online Dictionary
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Specialty Expressions: FEEDBACK CONTROL

ExpressionsDomainDefinition
Feedback controlComputingFeedback control A control system which monitors its effect on the system it is controlling and modifies its output accordingly. For example, a thermostat has two inputs: the desired temperature and the current temperature (the latter is the feedback). The output of the thermostat changes so as to try to equalize the two inputs. Computer disk drives use feedback control to position the read/write heads accurately on a recording track. Complex systems such as the human body contain many feedback systems that interact with each other; the homeostasis mechanisms that control body temperature and acidity are good examples. (1996-01-02). Source: The Free On-line Dictionary of Computing..
Feedback controlGeologyThe regulation of the activity of an enzyme by one of its products. (references)
Feedback control loopAerospaceA closed transmission path (loop), which includes an active transducer and which consists of a forward path, a feedback path, and one or more mixing points arranged to maintain a prescribed relationship between the loop input signal and the loop output signal. (references)
Feedback control systemAerospaceA control system, comprising one or more feedback control loops, which combines functions of the controlled signals with functions of the commands to tend to maintain prescribed relationships between the commands and the controlled signals. (references)

Source: compiled by the editor from various references; see credits.

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