The Benefits of a Closed-Loop System

Author:  Jack Champaigne
Source:  The Shot Peener magazine, Vol 26 / Issue 2, Spring 2012
Doc ID:  2012017
Year of Publication:  2012
Abstract:  
OPEN-LOOP AND CLOSED-LOOP are control systems. Open-loop systems operate in a "manual" mode (requires a person to manually review and make adjustments) while closed-loop systems operate in an "automatic" or self-adjusting mode. The open-loop systems achieve an output state at some equilibrium (steady state) point. The closed-loop systems have the additional benefit of measuring the output and comparing it with the request, making adjustments as needed.