Open-loop controller: Difference between revisions

Revision as of 04:28, 17 October 2016

Revision as of 06:21, 17 October 2016

Line 22:

Likewise; "A ''Feedback Control System'' is a system which tends to maintain a prescribed relationship of one system variable to another by comparing functions of these variables and using the difference as a means of control.'"<ref>{{cite book|title= The Origins of Feedback Control|last=Mayr|first= Otto|year= 1969|publisher =The Colonial Press, Inc.|___location= Clinton, MA USA|isbn= |pages=}}</ref>

The advanced type of automation that revolutionized manufacturing, aircraft, communications and other industries, is feedback control, which is usually ''continuous'' and involves taking measurements using a [[sensor]] and making calculated adjustments to keep the measured variable within a set range.<ref> name="Bennett, 1993"Stuart (1992). A history of control engineering, 1930-1955. IET. p. p. 48. ISBN 978-0-86341-299-8.</ref> The theoretical basis of closed loop automation is the discipline of [[control theory]].

== Examples ==