CONTROL OR REGULATING SYSTEMS IN GENERAL

**Definition:** This place covers:

Features of control systems or elements for regulating specific variables, which are clearly more generally applicable to any system.

**Limiting references (this place does not cover):** - Systems for controlling or regulating non-electric variables -> G05D - Systems for regulating electric or magnetic variables -> G05F - Control devices or systems insofar as characterised by mechanical features only -> G05G

**Glossary:** - automatic controller: means a system, circuit, or device in which a signal from the detecting element is compared with a signal representing the desired value and which operates in such a way as to reduce the deviation. The automatic controller generally does not include the sensitive element, i.e. that element which measures the value of the condition to be corrected, or the correcting element, i.e. that element which adjusts the condition to be corrected - electric: includes "electromechanical", "electrohydraulic" or "electropneumatic"