Reference input signal

5-2-125

A signal external to a control loop which serves as the reference and standard of comparison for the directly controlled variable.

Figure 2 - Block diagram of automatic control system (5-2-045) incorporating a closed loop (5-2-080)

Reference: ANSI (modified)

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

English