(0)G05B:0/2:
IPC6
SECTION G - PHYSICS
CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL...
G05B
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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)
 

Notes

(1)

 This class covers methods, systems, and apparatus for controlling, in general.

(2)

 In this class, the following terms or expressions are used with the meanings indicated:
 

-

 "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;
 

-

 "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;
 

-

 "automatic control" is often used in the art as a synonym for "regulation".

(3)

 Attention is drawn to the Notes following the title of section G, especially as regards the definition of the term "variable".

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)
 

Notes

(1)

 This subclass covers features of control systems or elements for regulating specific variables, which are clearly more generally applicable.

(2)

 This subclass does not cover applications of such systems or elements, which are covered by subclass G 05 D or G 05 F.

(3)

 In this subclass, the following terms or expressions are used with the meanings indicated:
 

-

 "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".

(4)

 In this subclass, details of specific control systems are classified in the group relevant to the system, if not otherwise provided for.

 

 

 
 

 1
/ 00 Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H 03 D 13/00)

1
/ 01 • electric [2]  

1
/ 02 • • for comparing analogue signals [2]  

1
/ 03 • • for comparing digital signals [2]  

1
/ 04 • • with sensing of the position of the pointer of a measuring instrument  

1
/ 06 • • • continuous sensing  

1
/ 08 • • • stepwise sensing  

1
/ 11 • fluidic [2]  
 

 5
/ 00 Anti-hunting arrangements

5
/ 01 • electric  

5
/ 04 • fluidic [2]  
 

 6
/ 00 Internal feedback arrangements for obtaining particular characteristics, e.g. proportional, integral, differential (in automatic controllers G 05 B 11/00)

6
/ 02 • electric  

6
/ 05 • fluidic [2]  
 

 7
/ 00 Arrangements for obtaining smooth engagement or disengagement of automatic control

7
/ 02 • electric [2]  

7
/ 04 • fluidic [2]  
 

 9
/ 00 Safety arrangements (G 05 B 7/00 takes precedence; safety arrangements in programme-control systems G 05 B 19/048, G 05 B 19/406; safety valves F 16 K 17/00; emergency protective circuit arrangements in general H 02 H)

9
/ 02 • electric  

9
/ 03 • • with multiple-channel loop, i.e. redundant control systems [2]  

9
/ 05 • fluidic [2]  
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