CONTROLLING; REGULATING (specially adapted to a particular field of use, see the relevant subclass for that field, e.g. Fulltext... Hierarchy... Expanded...B23Q)
G05
Note(s)
This class covers methods, systems, and apparatus for controlling, in general.
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".
Attention is drawn to the Notes following the title of section G, especially as regards the definition of the term "variable".
use of hydraulic, pneumatic, mechanical, and electrical motors for varying electric characteristics of devices which restore the quantity regulated;
the combination of static converters and current or voltage regulators, if the invention resides in the combination.
This subclass does not cover elements per se, which are covered by the relevant subclasses.
G05F 1/00
Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
using discharge tubes in series with the load as final control devices
G05F 1/54
· · · ·
additionally controlled by the unregulated supply
G05F 1/56
· · ·
using semiconductor devices in series with the load as final control devices
G05F 1/563
· · · ·
including two stages of regulation, at least one of which is output level responsive, e.g. coarse and fine regulation [4]
G05F 1/565
· · · ·
sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor (Fulltext... Hierarchy... Expanded...G05F 1/563 takes precedence) [4]
being plural resistors among which a selection is made [4]
G05F 1/652
· · ·
using variable impedances in parallel with the load as final control devices [4]
G05F 1/656
· · ·
using variable impedances in series and in parallel with the load as final control devices [4]
G05F 1/66
·
Regulating electric power
G05F 1/67
· ·
to the maximum power available from a generator, e.g. from solar cell [4]
G05F 1/70
·
Regulating power factor; Regulating reactive current or power [3]
G05F 3/00
Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
G05F 3/02
·
Regulating voltage or current
G05F 3/04
· ·
wherein the variable is ac
G05F 3/06
· · ·
using combinations of saturated and unsaturated inductive devices, e g. combined with resonant circuit
G05F 3/08
· ·
wherein the variable is dc
G05F 3/10
· · ·
using uncontrolled devices with non-linear characteristics
Regulators using the difference between the base-emitter voltages of two bipolar transistors operating at different current densities (Fulltext... Hierarchy... Expanded...G05F 3/26 takes precedence) [4]
G05F 5/00
Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output
G05F 5/02
·
Phase controlled switching using electronic tubes or three or more terminal semiconductive devices [4]
G05F 5/04
·
using a transformer or inductor as the final control device [4]