GB1422282A - Magnetic bearing assemblies - Google Patents

Magnetic bearing assemblies

Info

Publication number
GB1422282A
GB1422282A GB1270973A GB1270973A GB1422282A GB 1422282 A GB1422282 A GB 1422282A GB 1270973 A GB1270973 A GB 1270973A GB 1270973 A GB1270973 A GB 1270973A GB 1422282 A GB1422282 A GB 1422282A
Authority
GB
United Kingdom
Prior art keywords
rotor
coils
axial
controller
stabilization
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
GB1270973A
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.)
BODEN K GROTH W
Original Assignee
BODEN K GROTH W
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 BODEN K GROTH W filed Critical BODEN K GROTH W
Publication of GB1422282A publication Critical patent/GB1422282A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0474—Active magnetic bearings for rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device

Abstract

1422282 Magnetic bearings K BODEN W GROTH and D SCHEFFER 16 March 1973 [20 March 1972] 12709/73 Addition to 1257423 Heading G3R [Also in Division F2] The magnetic bearing assembly of Specification 1257423; in which the rotor 11, at least partly ferromagnetic, is stabilized radially by two sets of four windings 17, 18, in respective planes, controlled by two groups of four sensors, and controllers 20, 29; is modified in that there is provided, adjacent the permanent magnet 13, an annular coil 23 in a ferromagnetic member 22, control of the coil current, via controller 25 receiving signals from rotor axial displacement sensor 24 ensuring that rotor position is additionally stabilized in an axial direction. Controller 25 provides both gain and phase shift of the sensor signal to give clamping also in the axial direction. Axial stabilization may be provided at both ends of the rotor, with a single controller common to the magnetic arrangements at each end. In Fig. 2 (not shown), the coil 23 is replaced by four coils (17") 90 degrees apart in phase, all coils receiving a common current from controller (25) sensitive to rotor axial position sensor (24) for axial stabilization, the coils in addition receiving currents to produce a rotating magnetic field, from controller (19) sensitive to radial rotor position sensor (20), the coils thus acting also as the upper set of rotor radial stabilization coils.- The rotor axis may be vertical or otherwise. The sensors are capacitative, inductive, photo-electric, or galvanomagnetic. The magnetic circuit comprising components 22, 11 and air-gap 26 is arranged to have low reluctance. Axial stabilization may be provided by means co-operating with an internal wall of an at least partially hollow rotor encircling such means.
GB1270973A 1972-03-20 1973-03-16 Magnetic bearing assemblies Expired GB1422282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722213447 DE2213447C3 (en) 1972-03-20 1972-03-20 Magnetic storage

Publications (1)

Publication Number Publication Date
GB1422282A true GB1422282A (en) 1976-01-21

Family

ID=5839501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1270973A Expired GB1422282A (en) 1972-03-20 1973-03-16 Magnetic bearing assemblies

Country Status (2)

Country Link
DE (1) DE2213447C3 (en)
GB (1) GB1422282A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302061A (en) * 1977-01-13 1981-11-24 Societe Europeenne De Propulsion Removable magnetic suspension system
EP0869340A2 (en) * 1994-03-07 1998-10-07 Kabushiki Kaisha Toshiba A device for supporting and linearly moving a movable member
EP1244196A2 (en) * 2001-03-15 2002-09-25 Neumag GmbH & Co. KG Roller for forwarding at least one thread

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2263096C3 (en) * 1972-12-22 1982-07-08 Société Européenne de Propulsion, 92800 Puteaux, Hauts-de-Seine Control circuit of a magnetic bearing of a rotor with two magnetic bearings
DE2341766C3 (en) * 1973-08-17 1982-02-11 Teldix Gmbh, 6900 Heidelberg Magnetic storage
DE2342767C2 (en) * 1973-08-24 1983-06-01 Cambridge Thermionic Corp., 02138 Cambridge, Mass. Magnetic bearing
DE2457783C2 (en) * 1974-12-06 1986-10-09 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Magnetic storage
FR2662099B1 (en) * 1990-05-18 1994-08-05 Mecanique Magnetique Sa LOW FREQUENCY VIBRATOR WITH LARGE AMPLITUDE.
CN104373352B (en) * 2014-11-05 2016-08-24 北京石油化工学院 Magnetic suspension single shaft direct-drive compressor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302061A (en) * 1977-01-13 1981-11-24 Societe Europeenne De Propulsion Removable magnetic suspension system
EP0869340A2 (en) * 1994-03-07 1998-10-07 Kabushiki Kaisha Toshiba A device for supporting and linearly moving a movable member
EP0869340A3 (en) * 1994-03-07 1998-11-25 Kabushiki Kaisha Toshiba A device for supporting and linearly moving a movable member
EP1244196A2 (en) * 2001-03-15 2002-09-25 Neumag GmbH & Co. KG Roller for forwarding at least one thread
EP1244196A3 (en) * 2001-03-15 2003-06-25 Neumag GmbH & Co. KG Roller for forwarding at least one thread
US6707201B2 (en) 2001-03-15 2004-03-16 Neumag Gmbh & Co. Kg Cylinder for guiding at least one yarn

Also Published As

Publication number Publication date
DE2213447C3 (en) 1981-01-29
DE2213447A1 (en) 1973-10-04
DE2213447B2 (en) 1980-03-06

Similar Documents

Publication Publication Date Title
US3888553A (en) Levitated rotary magnetic device
US4942321A (en) Radial magnetic bearing system
US4841204A (en) Combination electric motor and magnetic bearing
US4882511A (en) Brushless three-phase D.C. motor
US3845997A (en) Magnetic bearing assembly for journalling a rotor in a stalor
GB1342919A (en) Magnetic bearing
US3890019A (en) Magnetic bearings
US5319273A (en) Fixed gain electromagnetic actuator and electromagnetic bearing incorporating same
US4470644A (en) Magnetic suspension device for inertial wheel
US4745318A (en) Induction motor with secondary rotor
GB1604121A (en) Dc motors
JPS5833935B2 (en) Magnetic bearings, especially magnetic thrust bearings
EP0679230A1 (en) Magnetic bearing cell with rotor and stator.
GB1422282A (en) Magnetic bearing assemblies
US11929650B2 (en) Electric machine with more precise measurement
GB1485524A (en) Electric motors
US4406983A (en) Rotational magnetic transducer
US3050671A (en) Variable-speed motor
GB1453983A (en) Induction meter with a temperature compensated magnetic bearing assembly
FI76898C (en) ELECTRIC MOTOR.
US3452609A (en) Gyroscope pickoff-torquer system
GB1478868A (en) Radial active magnetic bearing
GB1433561A (en) Electromagnetic rotational positioning device
GB1529725A (en) Active magnetic bearing
SU1303756A1 (en) Magnetoelectric bearing

Legal Events

Date Code Title Description
PS Patent sealed