ASHRAE Terminology

A Comprehensive Glossary of Terms for the Built Environment
ashrae.org/ashraeterms

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
closed-loop control

(1) (also known as feedback control) control system in which the effect of the control action on the controlled variable is sensed and used by the controller to provide a new output (feedback control). Compare to open-loop control. (2) signal path that includes a forward path, a feedback path, and a summing point and that forms a closed circuit.