GB1457262A - Magnetic positional control systems - Google Patents

Magnetic positional control systems

Info

Publication number
GB1457262A
GB1457262A GB1718573A GB1718573A GB1457262A GB 1457262 A GB1457262 A GB 1457262A GB 1718573 A GB1718573 A GB 1718573A GB 1718573 A GB1718573 A GB 1718573A GB 1457262 A GB1457262 A GB 1457262A
Authority
GB
United Kingdom
Prior art keywords
magnet
bar
force
permanent magnet
hall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1718573A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brentford Electric Ltd
Original Assignee
Brentford Electric Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brentford Electric Ltd filed Critical Brentford Electric Ltd
Priority to GB1718573A priority Critical patent/GB1457262A/en
Publication of GB1457262A publication Critical patent/GB1457262A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B13/00—Other railway systems
    • B61B13/08—Sliding or levitation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
    • B60L13/04—Magnetic suspension or levitation for vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/147—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

1457262 Automatic control systems BRENTFORD ELECTRIC Ltd 9 July 1974 [10 April 1973] 17185/73 Heading G3R The position of a magnet, on a first body, relative to a second body is maintained constant by controlling the magnet according to the measurement of the relative position of the two bodies and the magnetic force between the magnet and the second body. In the embodiment shown, bar 10 supports a permanent magnet 2, having control windings 5, 6, and another permanent magnet 19. Signals according to the relative position, and its rate of change, of magnet 19 and bar 9 are obtained from Hall probe 18 and coil 22 respectively. These signals are combined and compared with a position reference such that any position error, after passing through a phase change filter 26, is compared at 27 with the force between magnet 1 and bar 9 as measured by Hall probe 28. Any difference is used by amplifier 29 to vary the energization of windings 5, 6 and thus to regulate the force between, and position of, bars 9 and 10. Hall probe 18 is fed with a current that is varied so as to keep the probe Hall voltage constant, the current being indicative of the relative position between magnet 19 i.e. bar 10 and bar 9. Hall probe 29 is fed with constant current so that its Hall voltage is indicative of the flux, and thus the force, between magnet 1 and bar 9, which may be steel or a permanent magnet. In alternative embodiments, magnet 1 may be electromagnetic (i.e. permanent magnet 2 omitted) or the control windings 5, 6 replaced by a central polepiece whose position is controlled, using a hydraulic system, by amplifier 29. The positional control may be used in a suspension, levitation or guidance system for vehicles.
GB1718573A 1973-04-10 1973-04-10 Magnetic positional control systems Expired GB1457262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1718573A GB1457262A (en) 1973-04-10 1973-04-10 Magnetic positional control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1718573A GB1457262A (en) 1973-04-10 1973-04-10 Magnetic positional control systems

Publications (1)

Publication Number Publication Date
GB1457262A true GB1457262A (en) 1976-12-01

Family

ID=10090760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1718573A Expired GB1457262A (en) 1973-04-10 1973-04-10 Magnetic positional control systems

Country Status (1)

Country Link
GB (1) GB1457262A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091000A1 (en) * 1982-04-07 1983-10-12 Robert Bosch Gmbh Device for measuring the magnetic field of the earth as a navigational aid
EP0160186A2 (en) * 1984-03-30 1985-11-06 Thyssen Industrie Ag Magnet structure for a long stator drive
EP0169983A2 (en) * 1984-06-30 1986-02-05 Kabushiki Kaisha Toshiba Transporting system of floated carrier type
EP0179188A2 (en) * 1984-10-23 1986-04-30 Kabushiki Kaisha Toshiba Transporting system of floated carrier type
EP0266496A2 (en) * 1986-11-06 1988-05-11 MAN GHH Schienenverkehrstechnik GmbH Rail vehicle with wheels with flanges
GB2213963A (en) * 1988-01-14 1989-08-23 Man Technologie Gmbh Controlling the position of a follower
US4866380A (en) * 1983-03-16 1989-09-12 Thyssen Industrie Ag Method and apparatus for determining the distance between an electromagnetic sensor and a conductive rail
CN113654576A (en) * 2021-07-02 2021-11-16 华人运通(江苏)技术有限公司 Four-way valve position identification method and system based on water pump current

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091000A1 (en) * 1982-04-07 1983-10-12 Robert Bosch Gmbh Device for measuring the magnetic field of the earth as a navigational aid
US4866380A (en) * 1983-03-16 1989-09-12 Thyssen Industrie Ag Method and apparatus for determining the distance between an electromagnetic sensor and a conductive rail
EP0160186A2 (en) * 1984-03-30 1985-11-06 Thyssen Industrie Ag Magnet structure for a long stator drive
EP0160186A3 (en) * 1984-03-30 1987-08-19 Thyssen Industrie Ag Magnet structure for a long stator drive
EP0169983A2 (en) * 1984-06-30 1986-02-05 Kabushiki Kaisha Toshiba Transporting system of floated carrier type
EP0169983A3 (en) * 1984-06-30 1988-08-17 Kabushiki Kaisha Toshiba Transporting system of floated carrier type
EP0179188A3 (en) * 1984-10-23 1988-08-17 Kabushiki Kaisha Toshiba Transporting system of floated carrier type
EP0179188A2 (en) * 1984-10-23 1986-04-30 Kabushiki Kaisha Toshiba Transporting system of floated carrier type
US4972779A (en) * 1984-10-23 1990-11-27 Kabushiki Kaisha Toshiba Transporting system of floated carrier type
US5067415A (en) * 1984-10-23 1991-11-26 Kabushiki Kaisha Toshiba Transporting system of floated carrier type with zero power control at varying load weights
EP0266496A2 (en) * 1986-11-06 1988-05-11 MAN GHH Schienenverkehrstechnik GmbH Rail vehicle with wheels with flanges
EP0266496A3 (en) * 1986-11-06 1989-06-28 Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung Rail vehicle with wheels with flanges
GB2213963A (en) * 1988-01-14 1989-08-23 Man Technologie Gmbh Controlling the position of a follower
CN113654576A (en) * 2021-07-02 2021-11-16 华人运通(江苏)技术有限公司 Four-way valve position identification method and system based on water pump current
CN113654576B (en) * 2021-07-02 2023-12-19 华人运通(江苏)技术有限公司 Four-way valve position identification method and system based on water pump current

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed