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| SECTION G– PHYSICS |
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| G 05 | CONTROLLING; REGULATING (specially adapted to a particular field of use, see the relevant place for that field, e.g. A 62 C 37/00, B 03 B 13/00, B 23 Q) |
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| Notes |
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| (1) | This class covers methods, systems, and apparatus for controlling, in general. |
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| (2) | In this class, the following terms or expressions are used with the meanings indicated: |
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| – | "controlling" means influencing a variable in any way, e.g. changing its direction or its value (including changing it to or from zero), maintaining it constant, limiting its range of variation; |
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| – | "regulation" means maintaining a variable automatically at a desired value or within a desired range of values. The desired value or range may be fixed, or manually varied, or may vary with time according to a predetermined "programme" or according to variation of another variable. Regulation is a form of control; |
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| – | "automatic control" is often used in the art as a synonym for "regulation". |
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| (3) | Attention is drawn to the Notes following the title of section G, especially as regards the definition of the term "variable". |
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| G 05 B | CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (fluid-pressure actuators or systems acting by means of fluids in general F 15 B; valves per se F 16 K; characterised by mechanical features only G 05 G; sensitive elements, see the appropriate subclasses, e.g. G 12 B, subclasses of G 01, H 01; correcting units, see the appropriate subclasses, e.g. H 02 K) |
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| G 05 D | SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES (for continuous casting of metals B 22 D 11/16; valves per se F 16 K; sensing non-electric variables, see the relevant subclasses of G 01; for regulating electric or magnetic variables G 05 F) |
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| G 05 F | SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES (regulating the timing or recurrence frequency of pulses in radar or radio navigation systems G 01 S; closed-loop systems for regulating non-electric variables by electric means G 05 D; regulating power supply of digital computers G 06 F 1/26; regulating electric power distribution networks H 02 J; regulating the charging of batteries H 02 J 7/00; regulating of the output of static converters, e.g. switching regulators, H 02 M; regulation of the output of electric generators H 02 N, H 02 P 9/00, H 03 L; controlling transformers, reactors or choke coils H 02 P 13/00; regulating frequency response, gain, maximum output, amplitude or bandwidth of amplifiers H 03 G; regulating tuning of resonant circuits H 03 J; regulating characteristics of transmission lines H 04 B; electric control of X-ray apparatus H 05 G 1/30) |
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| G 05 G | CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY ("Bowden" or like mechanisms F 16 C 1/10; gearings or mechanisms not peculiar to this purpose F 16 H; speed changing or reversing mechanisms for gearings conveying rotary motion F 16 H 59/00 to F 16 H 63/00) |
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