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G:PHYSICS
 G05: CONTROLLING; REGULATING
  G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
   G05D1/00: Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
   G05D1/00B: with arrangements to save energy
   G05D1/00C: associated with a remote control arrangement
   G05D1/00C1: . . characterised by the operator's input device input arrangements for computing systems in general G06F3/00
   G05D1/00C2: . . characterised by the communication link data switching networks in general H04L12/00
   G05D1/00C3: . . involving a plurality of vehicles, e.g. fleet or convoy travelling traffic control systems for road vehicles G08G1/00; for marine craft G08G3/00; for aircraft G08G5/00; fleet control of land vehicles from a control room G05D1/02E20F6
   G05D1/00C4: . . by having the operator tracking the vehicle either by direct line of sight or via one or more cameras located remotely from the vehicle
   G05D1/00C5: . . by providing the operator with simple or augmented images from one or more cameras located onboard the vehicle, e.g. tele-operation images analyzed by a computer and used for automatic navigation G05D1/02E6V
   G05D1/00C6: . . by providing the operator with a computer generated representation of the environment of the vehicle, e.g. virtual reality, maps maps used for automatic navigation G05D1/02E14M; flight directors G01C23/00A
   G05D1/00C7: . . by providing the operator with signals other than visual, e.g. acoustic, haptic
   G05D1/00D: with safety arrangements
   G05D1/00D2: . . for transition from automatic pilot to manual pilot and vice versa
   G05D1/00D4: . . for limitation of acceleration or stress
   G05D1/00D6: . . to counteract a motor failure
   G05D1/00D8: . . using redundant signals or controls
   G05D1/00E: to help an aircraft pilot in the rolling phase
   G05D1/00F: characterized by the autonomous decision making process, e.g. artificial intelligence, predefined behaviours using knowledge based models G06N5/00
   G05D1/00G: involving pointing a payload, e.g. camera, weapon, sensor, towards a fixed or moving target
   G05D1/02: Control of position or course in two dimensions
   G05D1/02B: . . specially adapted to aircraft
   G05D1/02B2: . . . to counteract a sudden perturbation, e.g. cross-wind, gust
   G05D1/02C: . . specially adapted to water vehicles
   G05D1/02C4: . . . dynamic anchoring
   G05D1/02E: . . specially adapted to land vehicles
   G05D1/02E10: . . . using a radar radar systems designed for anti-collision purposes between land vehicles or between land vehicle and fixed obstacles G01S13/93C
   G05D1/02E12: . . . using magnetic or electromagnetic means
   G05D1/02E12P: . . . . using magnetic plots
   G05D1/02E12S: . . . . using magnetic strips
   G05D1/02E12W: . . . . using buried wires
   G05D1/02E14: . . . using internal positioning means
   G05D1/02E14B: . . . . comprising intertial navigation means, e.g. azimuth detector inertial navigation G01C21/16; inertial navigation combined with non-inertial navigation instruments G01C21/16A
   G05D1/02E14D: . . . . comprising means for registering the travel distance, e.g. revolutions of wheels measuring distance traversed on the ground by vehicles, e.g. using odometers G01C22/00
   G05D1/02E14M: . . . . using mapping information stored in a memory device navigation using map-matching G01C21/30
   G05D1/02E16: . . . using signals provided by a source external to the vehicle involving a plurality of vehicles G05D1/02E20; automatically controlling vehicle speed responsive to exernally generated signals B60K31/00F
   G05D1/02E16B: . . . . using satellite positioning signals, e.g. GPS
   G05D1/02E16D: . . . . using a RF signal
   G05D1/02E16D2: . . . . . generated in a local control room
   G05D1/02E16F: . . . . using signals transmitted via a public communication network, e.g. GSM network
   G05D1/02E20: . . . involving a plurality of land vehicles, e.g. fleet or convoy travelling traffic control systems for road vehicles G08G1/00, particularly anticollision systems G08G1/16
   G05D1/02E20B: . . . . with means for avoiding collisions between vehicles vehicle fittings for automatically controlling speed inclusing means for detecting potential obstacles B60K31/00D; avoiding obstacles by action on the steering system B62D; radar, sonar, lidar systems designed for anti-collision purposes G01S13/93, G01S15/93, G01S17/93
   G05D1/02E20F: . . . . Fleet control monitoring fleets in traffic control systems for road vehicles G08G1/123M, G08G1/127
   G05D1/02E20F2: . . . . . Convoy travelling
   G05D1/02E20F4: . . . . . by at least one leading vehicle of the fleet
   G05D1/02E20F6: . . . . . by controlling means in a control room
   G05D1/02E3: . . . with means for defining a desired trajectory involving a plurality of land vehicles G05D1/02E20
   G05D1/02E3B: . . . . in accordance with safety or protection criteria, e.g. avoiding hazardous areas monitoring the location of vehicles within a certain area, e.g. forbidden or allowed areas, in traffic control systems for road vehicles G08G1/123M3
   G05D1/02E3D: . . . . in accordance with energy consumption, time reduction or distance reduction criteria
   G05D1/02E3F: . . . . ensuring the processing of the whole working surface
   G05D1/02E3L: . . . . involving a learning process
   G05D1/02E3S: . . . . involving speed control of the vehicle vehicle fittings for automatically controlling, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator B60K31/00
   G05D1/02E3V: . . . . involving docking at a fixed facility, e.g. base station or loading bay parking aids B62D15/02H
   G05D1/02E5: . . . using mechanical sensing means, e.g. for sensing treated area
   G05D1/02E5B: . . . . in combination with fixed guiding means
   G05D1/02E6: . . . using optical position detecting means position-fixing by using electromagnetic waves other than radio waves, e.g. optical position detecting means G01S5/16
   G05D1/02E6B: . . . . using optical markers or beacons optical beacons per se G01S1/70
   G05D1/02E6B2: . . . . . in combination with a laser lasers per se H01S
   G05D1/02E6D: . . . . using obstacle or wall sensors G05D1/02E6V and G05D1/02E20B take precedence; lidar systems designed for anti-collision purposes G01S17/93
   G05D1/02E6D2: . . . . . in combination with a laser lasers per se H01S
   G05D1/02E6N: . . . . using non-visible light signals, e.g. IR or UV signals
   G05D1/02E6S: . . . . using reflecting strips
   G05D1/02E6V: . . . . unsing a video camera in combination with image processing means image data processing in general G06T ; video signal coding and transmission H04N
   G05D1/02E6V2: . . . . . in combination with a laser lasers per se H01S
   G05D1/02E6V4: . . . . . extracting 3D information from a plurality of images taken from different locations, e.g. stereo vision stereoscopic image analysis H04N13/00X; depth recovery from images G06T7/00R7S
   G05D1/02E6V6: . . . . . extracting relative motion information from a plurality of images taken successively, e.g. visual odometry, optical flow determining position or orientation from images G06T7/00P
   G05D1/02E8: . . . using acoustic signals, e.g. ultra-sonic singals sonar systems designed for anti-collision purposes G01S15/93
   G05D1/03: . . using near-field transmission systems, e.g. inductive-loop type G05D1/02E and subgroups take precedence
   G05D1/04: Control of altitude or depth
   G05D1/04B: . . specially adapted for aircraft
   G05D1/04B2: . . . during banks
   G05D1/04B4: . . . to counteract a perturbation, e.g. gust of wind
   G05D1/04C: . . specially adapted for water vehicles
   G05D1/06: . . Rate of change of altitude or depth
   G05D1/06B: . . . specially adapted for aircraft
   G05D1/06B2: . . . . to counteract a perturbation, e.g. gust of wind
   G05D1/06B2B: . . . . . by acting on the pitch
   G05D1/06B2C: . . . . . by acting on the motors
   G05D1/06B2D: . . . . . by combined action on the pitch and on the motors
   G05D1/06B4: . . . . to follow the profile of undulating ground
   G05D1/06B6: . . . . during a phase of take-off or landing
   G05D1/06B6B: . . . . . specially adapted for take-off
   G05D1/06B6B2: . . . . . . specially adapted for vertical take-off
   G05D1/06B6C: . . . . . specially adapted for landing
   G05D1/06B6C2: . . . . . . on a moving platform, e.g. aircraft carrier
   G05D1/06C: . . . specially adapted for under-water vehicles
   G05D1/08: Control of attitude, i.e. control of roll, pitch, or yaw
   G05D1/08B: . . specially adapted for aircraft
   G05D1/08B2: . . . to ensure stability
   G05D1/08B2B: . . . . using mathematical models
   G05D1/08B2C: . . . . using limited authority control
   G05D1/08B2D: . . . . to prevent a coupling between different modes
   G05D1/08B2E: . . . . to ensure coordination between different movements
   G05D1/08B4: . . . specially adapted for vertical take-off of aircraft
   G05D1/08B6: . . . specially adapted to captive aircraft
   G05D1/08C: . . specially adapted to water vehicles
   G05D1/08D: . . specially adapted for space vehicles
   G05D1/08E: . . specially adapted for land vehicles
   G05D1/10: Simultaneous control of position or course in three dimensions
   G05D1/10B: . . specially adapted for aircraft
   G05D1/10B2: . . . specially adapted for vertical take-off of aircraft
   G05D1/10B4: . . . involving a plurality of aircrafts, e.g. formation flying traffic control systems for aircraft G08G5/00
   G05D1/10B6: . . . specially adapted for unpowered flight, e.g. glider, parachuting, forced landing parachutes per se B64D17/00
   G05D1/10C: . . specially adapted for missiles
   G05D1/10C2: . . . animated with a rolling movement
   G05D1/12: Target-seeking control
   G05D3/00: Control of position or direction
   G05D3/10: without using feedback
   G05D3/10B: . . Solar tracker
   G05D3/12: using feedback
   G05D3/12B: . . using synchromachines (selsyns)
   G05D3/12B2: . . . without modulation
   G05D3/12B4: . . . with modulation
   G05D3/12K: . . using discrete position sensor
   G05D3/12K2: . . . with electrical contact
   G05D3/12V: . . using clutch or brake
   G05D3/14: . . using an analogue comparing device
   G05D3/14C: . . . with dc amplifier chain
   G05D3/14D: . . . with ac amplifier chain
   G05D3/14E: . . . with non-linear amplifier chain
   G05D3/14F: . . . with fine or coarse devices
   G05D3/14G: . . . with a plurality of loops
   G05D3/14G2: . . . . using models or predicting devices
   G05D3/14G4: . . . . using PID devices
   G05D3/14H: . . . with potentiometer
   G05D3/14K: . . . with discrete position sensor
   G05D3/14V: . . . with clutch or brake
   G05D3/16: . . . whose output amplitude can only take a number of discrete values
   G05D3/16V: . . . . using clutch or brake
   G05D3/18: . . . delivering a series of pulses
   G05D3/18S: . . . . using stepping motor
   G05D3/18V: . . . . using clutch or brake
   G05D3/20: . . using a digital comparing device
   G05D3/20F: . . . using fine or coarse devices
   G05D3/20V: . . . using clutch or brakes
   G05D5/00: Control of dimensions of material
   G05D5/02: of thickness, e.g. of rolled material
   G05D5/03: . . characterised by the use of electric means
   G05D5/04: of the size of items, e.g. of particles
   G05D5/06: . . characterised by the use of electric means
   G05D7/00: Control of flow
   G05D7/00B: characterised by the use of auxiliary non-electric power combined with the use of electric means
   G05D7/01: without auxiliary power
   G05D7/01B: . . the sensing element being a flexible member, e.g. bellows, diaphragm, capsule
   G05D7/01B2: . . . the sensing element acting as a valve
   G05D7/01B4: . . . the sensing element being deformable and acting as a valve
   G05D7/01C: . . the sensing element being a piston or plunger associated with one or more springs
   G05D7/01C2: . . . within the flow-path
   G05D7/01C2A: . . . . using sliding elements
   G05D7/01D: . . the in-line sensing element being a piston or float without flexible member or spring
   G05D7/01D2: . . . using slidable elements
   G05D7/01D4: . . . the sensing element being a ball
   G05D7/01E: . . the sensing element being a float or a ball placed outside the flow path to be controlled
   G05D7/01G: . . using pivoting sensing element acting as a valve mounted within the flow-path
   G05D7/01M: . . using rotary sensing element
   G05D7/01P: . . without moving parts
   G05D7/01S: . . using hydraulic or pneumatic amplifiers, relays or transmitters
   G05D7/03: with auxiliary non-electric power G05D7/00B takes precedence
   G05D7/06: characterised by the use of electric means G05D7/00B takes precedence
   G05D7/06C: . . specially adapted for solid materials
   G05D7/06C2: . . . characterised by the set value given to the control element
   G05D7/06F: . . specially adapted for fluid materials
   G05D7/06F2: . . . characterised by the set value given to the control element
   G05D7/06F4: . . . characterised by the type of regulator means
   G05D7/06F4B: . . . . by action on throttling means G05D7/06F4F, G05D7/06F4G take precedence
   G05D7/06F4B2: . . . . . using a plurality of throttling means G05D7/06F4B4 takes precedence
   G05D7/06F4B2A: . . . . . . the plurality of throttling means being arranged in series
   G05D7/06F4B2B: . . . . . . the plurality of throttling means being arranged in parallel
   G05D7/06F4B2C: . . . . . . the plurality of throttling means being arranged for the control of a single flow from a plurality of converging flows G05D7/06F4B2B takes precedence; ratio control G05D11/13
   G05D7/06F4B2D: . . . . . . the plurality of throttling means being arranged for the control of a plurality of diverging flows from a single flow G05D7/06F4B2B takes precedence; ratio control G05D11/13
   G05D7/06F4B4: . . . . . characterised by free surface flow open channel water distribution systems E02B13/00
   G05D7/06F4D: . . . . by action on flow sources G05D7/06F4F, G05D7/06F4G take precedence
   G05D7/06F4D2: . . . . . using a plurality of flow sources
   G05D7/06F4F: . . . . by combined action on throttling means and flow sources G05D7/06F4G takes precedence
   G05D7/06F4G: . . . . by action on throttling means or flow sources of very small size, e.g. microfluidics microvalves F16K99/00M; micro-structural devices per se B81B
   G05D9/00: Level control, e.g. controlling quantity of material stored in vessel
   G05D9/02: without auxiliary power
   G05D9/04: with auxiliary non-electric power
   G05D9/12: characterised by the use of electric means
   G05D11/00: Ratio control
   G05D11/00B: with discontinuous action
   G05D11/00C: using interconnected flow control elements
   G05D11/00D: using synchronised pumps
   G05D11/00E: involving a first fluid acting on the feeding of a second fluid
   G05D11/00G: involving a fluid operating a pump motor
   G05D11/02: Controlling ratio of two or more flows of fluid or fluent material
   G05D11/03: . . without auxiliary power
   G05D11/035: . . with auxiliary non-electric power
   G05D11/04: . . . by sensing weight of individual components, e.g. gravimetric procedure
   G05D11/06: . . . by sensing density of mixture, e.g. using aerometer
   G05D11/08: . . . by sensing concentration of mixture, e.g. measuring pH value
   G05D11/10: . . . . by sensing moisture of non-aqueous liquids
   G05D11/12: . . . by sensing viscosity of mixture
   G05D11/13: . . characterised by the use of electric means
   G05D11/13B: . . . by measuring the values related to the quantity of the individual components G05D11/13F takes precedence
   G05D11/13B2: . . . . by controlling the flow of the individual components G05D11/13B4 takes precedence
   G05D11/13B4: . . . . with discontinuous action
   G05D11/13B4B: . . . . . by sensing the weight of the individual components
   G05D11/13D: . . . by sensing at least one property of the mixture G05D11/13F takes precedence
   G05D11/13D2: . . . . by sensing the viscosity
   G05D11/13D4: . . . . by sensing the density of the mixture
   G05D11/13D6: . . . . by sensing the concentration of the mixture, e.g. measuring pH value
   G05D11/13F: . . . by measuring a value related to the quantity of the individual components and sensing at least one property of the mixture
   G05D11/16: Controlling mixing ratio of fluids having different temperatures, e.g. by sensing the temperature of a mixture of fluids having different viscosities
   G05D13/00: Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
   G05D13/02: Details
   G05D13/04: . . providing for emergency tripping of an engine in case of exceeding maximum speed
   G05D13/06: . . providing for damping of erratic vibrations in governors
   G05D13/08: without auxiliary power
   G05D13/10: . . Centrifugal governors with fly-weights
   G05D13/12: . . . Details
   G05D13/14: . . . . Fly weights; Mountings thereof; Adjusting equipment for limits, e.g. temporarily
   G05D13/16: . . . . Risers; Transmission gear therefor; Restoring mechanisms therefor
   G05D13/18: . . . Counterbalanced by spider springs acting immediately upon the fly-weights
   G05D13/20: . . . counterbalanced by spider springs acting upon the articulated riser
   G05D13/22: . . . counterbalanced by fluid pressure acting upon the articulated riser
   G05D13/24: . . . counterbalanced by two or more different appliances acting simultaneously upon the riser, e.g. with both spring force and fluid pressure, with both spring force and electromagnetic force
   G05D13/26: . . . with provision for modulating the degree of non-uniformity of speed
   G05D13/28: . . . with provision for performing braking effects in case of increased speed
   G05D13/30: . . Governors characterised by fluid features in which the speed of a shaft is converted into fluid pressure
   G05D13/32: . . . using a pump
   G05D13/34: with auxiliary non-electric power
   G05D13/36: . . using regulating devices with proportional band, i.e. P regulating devices
   G05D13/38: . . . involving centrifugal governors of fly-weight type
   G05D13/40: . . . involving fluid governors of pump type
   G05D13/42: . . . involving fluid governors of flow-controller type, i.e. the width of liquid flow being controlled by fly-weights
   G05D13/44: . . . involving fluid governors of jet type
   G05D13/46: . . using regulating devices with proportional band and integral action, i.e. PI regulating devices
   G05D13/48: . . . involving resilient restoring mechanisms
   G05D13/50: . . . involving connecting means or superimposing a proportional regulating device and an integral regulating device
   G05D13/52: . . using regulating devices with proportional band and derivative action, i.e. PD regulating devices
   G05D13/54: . . . involving centrifugal governors of fly-weight type exerting an acceleratory effect
   G05D13/56: . . . involving restoring mechanisms exerting a delay effect
   G05D13/58: . . . involving means for connecting a speed regulating device and an acceleration regulating device
   G05D13/60: . . using regulating devices with proportional band, derivative and integral action, i.e. PID regulating devices
   G05D13/62: characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement electric motor control H02P
   G05D13/64: Compensating the speed difference between engines meshing by a differential gearing or the speed difference between a controlling shaft and a controlled shaft G05D13/62 takes precedence
   G05D13/66: Governor units providing for co-operation with control dependent upon a variable other than speed
   G05D15/00: Control of mechanical force or stress; Control of mechanical pressure
   G05D15/01: characterised by the use of electric means
   G05D16/00: Control of fluid pressure
   G05D16/02: Modifications to reduce the effects of instability, e.g. due to vibrations, friction, abnormal temperature, overloading, unbalance
   G05D16/04: without auxiliary power
   G05D16/06: . . the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
   G05D16/06B: . . . two controllers being mounted in series
   G05D16/06C: . . . two controllers being mounted in parallel
   G05D16/06D: . . . the controller being mounted within the flow path and having slidable elements
   G05D16/06E: . . . the sensing element being deformable, e.g. Bourdon tube
   G05D16/06E2: . . . . the deformable sensing element acting as a throttling member
   G05D16/06G: . . . the sensing element being a bellow
   G05D16/06G2: . . . . acting directly on the obturator
   G05D16/06G2B: . . . . . characterised by the form of the obturator
   G05D16/06G4: . . . . acting indirectly on the obturator, e.g. by a lever
   G05D16/06G4B: . . . . . characterised by the form of the obturator
   G05D16/06H: . . . the sensing element being a membrane
   G05D16/06H10: . . . . the membrane acting on the obturator through a lever
   G05D16/06H10B: . . . . . using one membrane without spring
   G05D16/06H10B2: . . . . . . characterised by the form of the obturator
   G05D16/06H10C: . . . . . using a spring-loaded membrane
   G05D16/06H10C2: . . . . . . characterised by the form of the lever
   G05D16/06H10C4: . . . . . . characterised by the form of the obturator
   G05D16/06H10C6: . . . . . . characterised by the loading mechanisms of the membrane
   G05D16/06H10D: . . . . . using a spring-loaded membrane with a spring-loaded slideable obturator
   G05D16/06H10E: . . . . . using several membranes
   G05D16/06H2: . . . . characterised by the properties of the membrane
   G05D16/06H4: . . . . characterised by the loading device of the membrane e.g. spring
   G05D16/06H6: . . . . characterised by the form of the obturator
   G05D16/06H6B: . . . . . the obturator is a membrane
   G05D16/06H8: . . . . the membrane acting directly on the obturator
   G05D16/06H8B: . . . . . using one membrane without spring
   G05D16/06H8B2: . . . . . . characterised by the form of the obturator
   G05D16/06H8C: . . . . . using several membranes without spring
   G05D16/06H8D: . . . . . using one spring-loaded membrane
   G05D16/06H8D2: . . . . . . characterised by the form of the obturator
   G05D16/06H8D4: . . . . . . characterised by the loading mechanisms of the membrane
   G05D16/06H8E: . . . . . using a spring-loaded membrane with a spring-loaded slideable obturator
   G05D16/06H8E2: . . . . . . characterised by the form of the obturator
   G05D16/06H8E4: . . . . . . characterised by the loading mechanisms of the membrane
   G05D16/06H8G: . . . . . using several spring-loaded membranes
   G05D16/08: . . . Control of liquid pressure
   G05D16/10: . . the sensing element being a piston or plunger
   G05D16/10B: . . . with sensing element placed within the flow-path
   G05D16/10B2: . . . . using sliding elements
   G05D16/12: . . the sensing element being a float
   G05D16/14: with auxiliary non-electric power
   G05D16/16: . . derived from the controlled fluid
   G05D16/16B: . . . using one or several membranes
   G05D16/16D: . . . using one or several pistons
   G05D16/18: . . derived from an external source
   G05D16/18B: . . . using one or several membranes
   G05D16/20: characterised by the use of electric means
   G05D16/20D: . . with direct action of electric energy on controlling means G05D16/20H takes precedence
   G05D16/20D2: . . . using throttling means
   G05D16/20D2B: . . . . actuated by an electric motor
   G05D16/20D2D: . . . . with a plurality of throttling means
   G05D16/20D2D1: . . . . . the plurality of throttling means being arranged in series
   G05D16/20D2D2: . . . . . the plurality of throttling means being arranged in parallel
   G05D16/20D2D3: . . . . . the plurality of throttling means being arranged for the control of a single pressure from a plurality of converging pressures G05D16/20D2D2 takes precedence
   G05D16/20D2D3B: . . . . . . the plurality of throttling means comprising only a first throttling means acting on a higher pressure and a second throttling means acting on a lower pressure, e.g. the atmosphere
   G05D16/20D2D4: . . . . . the plurality of throttling means being arranged for the control of a plurality of diverging pressures from a single pressure G05D16/20D2D2 takes precedence
   G05D16/20D4: . . . using control means acting on the pressure source
   G05D16/20D4B: . . . . with a plurality of pressure sources
   G05D16/20D6: . . . using a combination of controlling means as defined in G05D16/20D2 and G05D16/20D4G05D16/20D4B takes precedence
   G05D16/20F: . . without direct action of electric energy on the controlling means G05D16/20H takes precedence
   G05D16/20H: . . with combination of electric and non-electric auxiliary power
   G05D17/00: Control of torque; Control of mechanical power
   G05D17/02: characterised by the use of electric means
   G05D19/00: Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase
   G05D19/02: characterised by the use of electric means
   G05D21/00: Control of chemical or physico-chemical variables, e.g. pH value
   G05D21/02: characterised by the use of electric means
   G05D22/00: Control of humidity
   G05D22/02: characterised by the use of electric means
   G05D23/00: Control of temperature
   G05D23/01: without auxiliary power
   G05D23/01B: . . with mechanical sensing element not covered by groups G05D23/02 and G05D23/12
   G05D23/02: . . with sensing element expanding and contracting in response to changes of temperature
   G05D23/02B: . . . the sensing element being a non-metallic solid, e.g. elastomer, paste
   G05D23/02B2: . . . . the sensing element being placed within a regulating fluid flow
   G05D23/02B4: . . . . the sensing element being placed outside a regulating fluid flow
   G05D23/02C: . . . the sensing element being of the rod type, tube type, or of a similar type
   G05D23/02C2: . . . . the sensing element being placed within a regulating fluid flow
   G05D23/02C4: . . . . the sensing element being placed outside a regulating fluid flow
   G05D23/02C4B: . . . . . for combustible fluid
   G05D23/02D: . . . with fusing sensing element
   G05D23/08: . . . with bimetallic element
   G05D23/10: . . . . with snap-action elements
   G05D23/12: . . with sensing element responsive to pressure or volume changes in a confined fluid
   G05D23/12B: . . . characterised by the sensing element
   G05D23/12B2: . . . . using a plurality of sensing elements
   G05D23/12C: . . . the sensing element being placed within a regulating fluid flow
   G05D23/12D: . . . the sensing element being placed outside a regulating fluid flow
   G05D23/12D4: . . . . using a capillary tube
   G05D23/12D4B: . . . . . to control a gaseous fluid circulation
   G05D23/12D4B2: . . . . . . the fluid being combustible
   G05D23/13: . . by varying the mixing ratio of two fluids having different temperatures
   G05D23/13B: . . . for liquids G05D23/13E takes precedence
   G05D23/13B2: . . . . without temperature sensing element
   G05D23/13B4: . . . . with temperature sensing element
   G05D23/13B4B: . . . . . details of the sensor
   G05D23/13B4C: . . . . . measuring the temperature of incoming fluid
   G05D23/13B4D: . . . . . measuring the temperature of mixed fluid
   G05D23/13B4D2: . . . . . . with manual temperature setting means
   G05D23/13B4D2B: . . . . . . . combined with flow controlling means
   G05D23/13B4D4: . . . . . . with pressure equalizing means
   G05D23/13B4G: . . . . . using a plurality of sensing elements
   G05D23/13B4G2: . . . . . . measuring the temperature of mixed fluid
   G05D23/13C: . . . for gases G05D23/13E takes precedence
   G05D23/13D: . . . for steam and liquid G05D23/13E takes precedence
   G05D23/13E: . . . characterised by the use of electric means
   G05D23/185: with auxiliary non-electric power
   G05D23/185B: . . with sensing element expanding and contracting in response to change of temperature
   G05D23/185C: . . with bimetallic element
   G05D23/185D: . . with sensing element responsive to pressure or volume change in a confined fluid
   G05D23/185M: . . by varying the mixing ratio of fluids having different temperatures
   G05D23/19: characterised by the use of electric means G05D23/13E takes precedence
   G05D23/19B: . . characterised by the use of a variable reference value
   G05D23/19B2: . . . variable in time
   G05D23/19B4: . . . associated with tele control
   G05D23/19C: . . using an analogue comparing device
   G05D23/19C2: . . . whose output amplitude can only take two discrete values
   G05D23/19C4: . . . whose output amplitude can take more than two discrete values
   G05D23/19C6: . . . delivering a series of pulses
   G05D23/19D: . . using digital means
   G05D23/19E: . . characterised by the type of controller
   G05D23/19E2: . . . using a modification of the thermal impedance between a source and the load
   G05D23/19E4: . . . using a thermal motor
   G05D23/19E6: . . . using thermal energy, the cost of which varies in function of time
   G05D23/19E8: . . . using thermal energy, the availability of which is aleatory
   G05D23/19F: . . using a combination of auxiliary electric and non-electric power
   G05D23/19G: . . using a plurality of sensors G05D23/19B, G05D23/19D, and G05D23/19E take precedence
   G05D23/19G2: . . . sensing the temperature of one space
   G05D23/19G4: . . . sensing the temperaure in different places in thermal relationship with one or more spaces
   G05D23/19G4B: . . . . to control the temperature of one space
   G05D23/19G4C: . . . . to control the temperature of a plurality of spaces
   G05D23/19G4C2: . . . . . each space being provided with one sensor acting on one or more control means
   G05D23/19G4D: . . . . using sequential control
   G05D23/19T: . . with control of the working time of a temperature controlling device
   G05D23/20: . . with sensing elements having variation of electric or magnetic properties with change of temperature
   G05D23/20B: . . . characterised by the use of a variable reference value
   G05D23/20B2: . . . . variable in time
   G05D23/20B4: . . . . associated with tele control
   G05D23/20C: . . . using an analogue comparing device
   G05D23/20C2: . . . . whose output amplitude can only take two discrete values
   G05D23/20C4: . . . . whose output amplitude can take more than two discrete values
   G05D23/20C6: . . . . delivering a series of pulses
   G05D23/20D: . . . using digital means
   G05D23/20E: . . . characterised by the type of controller
   G05D23/20E2: . . . . using a modification of the thermal impedance between a source and the load
   G05D23/20E4: . . . . using a thermal motor
   G05D23/20E6: . . . . using thermal energy the cost of which varies in function of time
   G05D23/20E8: . . . . using thermal energy, the availability of which is aleatory
   G05D23/20F: . . . using a combination of auxiliary electric and non-electric power
   G05D23/20G: . . . using a plurality of sensors G05D23/20B, G05D23/20D, G05D23/20E take precedence
   G05D23/20G2: . . . . sensing the temperature of one space
   G05D23/20G4: . . . . sensing the temperature in different places in thermal relationship with one or more spaces
   G05D23/20G4B: . . . . . to control the temperature of one space
   G05D23/20G4C: . . . . . to control the temperature of a plurality of spaces
   G05D23/20G4C2: . . . . . . each space being provided with one sensor acting on one or more control means
   G05D23/20G4D: . . . . . using sequential control
   G05D23/20K: . . . details of the sensing element
   G05D23/20K2: . . . . the sensing element being a semiconductor
   G05D23/20K4: . . . . the sensing element being a ionized gas
   G05D23/20K6: . . . . the sensing element being a dielectric of a capacitor
   G05D23/20L: . . . details of the regulator
   G05D23/20L1: . . . . using mechanical means
   G05D23/22: . . . the sensing element being a thermocouple
   G05D23/22B: . . . . characterised by the use of a variable reference value
   G05D23/22B2: . . . . . variable in time
   G05D23/22B4: . . . . . associated with tele control
   G05D23/22C: . . . . using an analog comparing device
   G05D23/22C2: . . . . . whose output amplitude can only take two discrete values
   G05D23/22C4: . . . . . whose output amplitude can take more than two discrete values
   G05D23/22C6: . . . . . delivering a series of pulses
   G05D23/22D: . . . . using digital means
   G05D23/22E: . . . . characterised by the type of controller
   G05D23/22E2: . . . . . using a modification of the thermal impedance between a source and the load
   G05D23/22E4: . . . . . using a thermal motor
   G05D23/22E6: . . . . . using thermal energy the cost of which varies in function of time
   G05D23/22E8: . . . . . using thermal energy the availability of which is aleatory
   G05D23/22F: . . . . using a combination of auxiliary electric and non-electric power
   G05D23/22G: . . . . using a plurality of sensors G05D23/22B, G05D23/22D, G05D23/22E take precedence
   G05D23/22G2: . . . . . sensing the temperature of one space
   G05D23/22G4: . . . . . sensing the temperature in different places in thermal relationship with one or more spaces
   G05D23/22G4B: . . . . . . to control the temperature of one space
   G05D23/22G4C: . . . . . . to control the temperature of a plurality of spaces
   G05D23/22G4C2: . . . . . . . each space being provided with one sensor acting on one or more control means
   G05D23/22G4D: . . . . . . using sequential control
   G05D23/22L: . . . . details of the regulator
   G05D23/22L2: . . . . . using discharge tubes
   G05D23/22L4: . . . . . using photoelectric elements
   G05D23/22L6: . . . . . using selfs or transformers
   G05D23/24: . . . the sensing element having a resistance varying with temperature, e.g. a thermistor
   G05D23/24A: . . . . using a heating element as a sensing element
   G05D23/24B: . . . . characterised by the use of a variable reference value
   G05D23/24B2: . . . . . variable in time
   G05D23/24B4: . . . . . associated with telecontrol
   G05D23/24C: . . . . using an analog comparing device
   G05D23/24C1: . . . . . using circuits with semiconductor devices
   G05D23/24C2: . . . . . whose output amplitude can only take two discrete values
   G05D23/24C2C: . . . . . . using circuit with semiconductor devices
   G05D23/24C4: . . . . . whose output amplitude can take more than two discrete values
   G05D23/24C6: . . . . . delivering a series of pulses
   G05D23/24C6C: . . . . . . using circuits with semiconductor devices
   G05D23/24C6D: . . . . . . using bimetallic elements
   G05D23/24D: . . . . using digital means
   G05D23/24E: . . . . characterised by the type of controller
   G05D23/24E2: . . . . . using a modification of the thermal impedance between a source and the load
   G05D23/24E4: . . . . . using a thermal motor
   G05D23/24E6: . . . . . using thermal energy, the cost of which varies in function of time
   G05D23/24E8: . . . . . using thermal energy the availability of which is aleatory
   G05D23/24F: . . . . using a combination of auxiliary electric and non-electric power
   G05D23/24G: . . . . using a plurality of sensors G05D23/24B, G05D23/24D and G05D23/24E take precedence
   G05D23/24G2: . . . . . sensing the temperature of one space
   G05D23/24G4: . . . . . sensing the temperature in different places in thermal relationship with one or more space
   G05D23/24G4B: . . . . . . to control the temperature of one space
   G05D23/24G4C: . . . . . . to control the temperature of a plurality of spaces
   G05D23/24G4C2: . . . . . . . each space being provided with one sensor acting on one or more control means
   G05D23/24G4D: . . . . . . using sequential control
   G05D23/24L: . . . . Details of the regulator
   G05D23/24L2: . . . . . using discharge tubes
   G05D23/24L4: . . . . . using photoelectric elements
   G05D23/24L6: . . . . . using selfs or transformers
   G05D23/26: . . . the sensing element having a permeability varying with temperature
   G05D23/26B: . . . . characterised by the use of a variable reference value
   G05D23/26C: . . . . using an analogue comparing device
   G05D23/26D: . . . . using digital means
   G05D23/26E: . . . . characterised by the type of controller
   G05D23/26F: . . . . using a combination of auxiliary electric and non-electric power
   G05D23/26G: . . . . using a pluarility of sensors G05D23/26B, G05D23/26D, G05D23/26E take precedence
   G05D23/27: . . with sensing element responsive to radiation
   G05D23/275: . . with sensing element expanding, contracting, or fusing in response to changes of temperature
   G05D23/275B: . . . using a variable reference value
   G05D23/275B2: . . . . variable in time
   G05D23/275B4: . . . . associated with tele control
   G05D23/275C: . . . using an analogic regulator
   G05D23/275C2: . . . . whose output amplitude can only take two discrete values
   G05D23/275C4: . . . . whose output amplitude can take more than two discrete values
   G05D23/275C6: . . . . delivering a series of pulses
   G05D23/275D: . . . using digital means
   G05D23/275E: . . . characterised by the type of controller
   G05D23/275E2: . . . . using a modification of the thermal impedance between a source and the load
   G05D23/275E4: . . . . using a thermal motor
   G05D23/275E6: . . . . using thermal energy the cost of which varies in function of time
   G05D23/275E8: . . . . using thermal energy the availability of which is aleatory
   G05D23/275F: . . . using a combination of auxiliary electric and non-electric power
   G05D23/275G: . . . using a plurality of sensors G05D23/275B, G05D23/275D, G05D23/275E take precedence
   G05D23/275G2: . . . . sensing the temperature of one space
   G05D23/275G4: . . . . sensing the temperature in different places in thermal relationship with one or more spaces
   G05D23/275G4B: . . . . . to control the temperature of one space
   G05D23/275G4C: . . . . . to control the temperature of a plurality of spaces
   G05D23/275G4C2: . . . . . . each space being provided with one sensor acting on one or more control means
   G05D23/275G4D: . . . . . using sequential control
   G05D23/275K: . . . Details of the sensing element
   G05D23/275K1: . . . . using fusible material
   G05D23/275K2: . . . . using expansible fluid
   G05D23/275K4: . . . . using conductible expansible fluid
   G05D23/275K6: . . . . using bimetallic element
   G05D23/275K8: . . . . using expansible solid
   G05D23/275K9: . . . . using the controlled element as sensing element
   G05D23/27B: . . . characterised by the use of a variable reference value
   G05D23/27C: . . . using an analog comparing device
   G05D23/27D: . . . using digital means
   G05D23/27E: . . . characterised by the type of controller
   G05D23/27F: . . . using a combination of auxiliary electric and non-electric power
   G05D23/27G: . . . using a plurality of sensors
   G05D23/30: . . Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
   G05D23/30C: . . . using a sensing element having a resistance varying with temperature, e.g. thermistor
   G05D23/30C2: . . . . using semiconductor devices
   G05D23/32: . . . with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
   G05D24/00: Control of viscosity
   G05D24/02: characterised by the use of electric means
   G05D25/00: Control of light, e.g. intensity, colour, phase
   G05D25/02: characterised by the use of electric means
   G05D27/00: Simultaneous control of variables covered by two or more of the preceding main groups
   G05D27/02: characterised by the use of electric means
   G05D29/00: Simultaneous control of electric and non-electric variables
   G05D99/00: Subject matter not provided for in other groups of this subclass