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WO1984001802A1 - Palier magnetique - Google Patents

Palier magnetique Download PDF

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Publication number
WO1984001802A1
WO1984001802A1 PCT/EP1983/000284 EP8300284W WO8401802A1 WO 1984001802 A1 WO1984001802 A1 WO 1984001802A1 EP 8300284 W EP8300284 W EP 8300284W WO 8401802 A1 WO8401802 A1 WO 8401802A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
magnetic bearing
windings
bearing according
control
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.)
Ceased
Application number
PCT/EP1983/000284
Other languages
German (de)
English (en)
Inventor
Werner Auer
Rainer Sindlinger
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.)
Rockwell Collins Deutschland GmbH
Original Assignee
Teldix GmbH
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 Teldix GmbH filed Critical Teldix GmbH
Publication of WO1984001802A1 publication Critical patent/WO1984001802A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
    • 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
    • F16C32/0459—Details of the magnetic circuit
    • 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
    • F16C32/0485—Active magnetic bearings for rotary movement with active support of three degrees of freedom

Definitions

  • the invention relates to a magnetic bearing in which the Lucasspal tdiameter is large compared to the axial length of the bearing, in which the rotor is radially passive at least on the rotor side by permanent magnets, in which the axial position of the rotor is actively controlled by a control device, and in which several sensor arrangements for determining the axial position as well as control amplifiers and windings are used to exert forces on the rotor.
  • a magnetic bearing with these features is known from EU patent application 49 300.
  • a flywheel is mounted there with the help of such a magnetic bearing.
  • the flywheel ring contains two permanent magnet rings on the axial surfaces.
  • magnetic circuits are formed there which have axial air gaps between the rotor and stator. This stabilizes the rotor radially.
  • the rotor carries three segment-shaped windings. The magnetic fluxes generated in this way are also conducted through the air gaps; sector by sector are the Axial forces acting on the rotor can be varied.
  • Each of the windings is assigned a sensor monitoring the axial position of the rotor and a downstream control amplifier.
  • the rotor is hereby forced into a predetermined axial position.
  • the invention has for its object to improve the bearing properties of such a magnetic bearing with a small axial expansion compared to the radial expansion.
  • tilting regulators are additionally created for two axes perpendicular to one another and to the axis of rotation.
  • the system switches to a three-channel controller, which then again operates at least four windings. It is sufficient to use four sensors per se.
  • the input signals of the first and second control amplifiers are cross-coupled, i.e. a portion of the input signal of one amplifier is superimposed on the input signal of the other amplifier.
  • This cross-coupling is preferably designed to be speed-dependent, i.e. the cross-coupled portion increases with increasing speed.
  • FIG. 1 shows a first embodiment of a control for a magnetic bearing according to the invention
  • FIG. 2 shows a possible structure of the magnetic bearing, which is regulated as shown in FIG. 1,
  • FIG. 3 shows other embodiments for the radial passive bearing
  • FIG. 4 shows other embodiments for the application of moments and forces
  • FIG. 5 shows another possibility of control
  • Fig. 6 shows an embodiment for the construction of the camp, which can be controlled according to FIG. 5.
  • Fig. 1 four sensor arrangements 1-4 are provided, of which the sensor arrangements 1 and 2 lie on an axis (x-axis) perpendicular to the axis of rotation (z-axis) and diametrically to the axis of rotation and on axial movements in their output signals in the same way react.
  • the sensor arrangements 3 and 4 are arranged on the y axis perpendicular to the x and z axes.
  • differential amplifiers 5 and 6 differential signals are formed from the output signals of the arrangements 1 and 2 or 3 and 4, a difference occurring when the rotor sensed by the sensor arrangements has a tilting movement about the respectively perpendicular to the axis on which the interconnected sensor arrangements lie. lying axis.
  • the signals then reach windings 16 to 19 via control amplifiers 7 and 8, inverters 9 and 10, summing elements 11 to 14 and power amplifiers 15; each of these windings 16 to 19 is spatially assigned to one of the sensor arrangements 1 to 4 and generates an axial force on the rotor when actuated. All 4 sensor arrangements 1 to 4 are also connected to a summing amplifier 20, the output signal of which also reaches the windings 16 to 19 via a control amplifier 21 and the summing amplifiers 11 to 14 and the power amplifiers 15.
  • the O-point of the tilt controller can be adjusted, so that there is a defined misalignment of the rotor axis.
  • a magnetic bearing constructed in accordance with FIG. 2 can be regulated with the control circuit shown in FIG. 1.
  • Fig. 2a shows a perspective view and Fig. 2b shows a section.
  • a rotor, designated 31, of the bearing consists of a radially magnetized permanent magnet ring 32, at the poles of which two pole plate rings 33 and 34 are connected.
  • This rotor is offset axially offset on both sides by U-shaped stator ring segments 35 to 38 or 35 'to 38' made of magnetically highly conductive material; the training is such that the free legs of the U are just opposite the pole plate rings 33 and 34.
  • Segment windings 39 to 42 and 39 'to 42' are wound in the circumferential direction around these ring segments.
  • the two winding groups are controlled by the control device shown in FIG. 1 as a function of distance signals which are generated by sensor arrangements 43 to 46 or 43 'to 46'. It is from the signals of a pair of sensors z. B. 45 and 45 'each formed the difference; this difference signal represents the output signal of one of the sensor arrangements 1 to 4 of FIG. 1.
  • the air gaps between rotor 1 and stator are designated 47 and 47 'or 48 and 48'.
  • the sensor pairs 45 and 45 'and 43 and 43' and the sensor arrangements 1 and 2 of FIG. 1 corresponding to them generate output signals.
  • the windings 16 and 17 are driven in opposite directions and produce a counterturning morale.
  • the winding 16 corresponds to the partial windings 41 and 41 'connected in series, which are wound in opposite directions and support each other in their effect.
  • the winding 17 and the partial windings 39 and 39 ' are superimposed in the air gaps 47 and 47 '.
  • cross coupling lines 24 and 25 via which a portion of the input signals of the control amplifiers 7 and 8 can be coupled into the other control amplifier.
  • the cross-coupled components preferably increase with the speed, which can be realized by an amplifier with an adjustable gain factor in each cross-coupling line.
  • 3a to 3c are other exemplary embodiments of a possible passive radial! Aging shown, here a stator ring 50 is arranged coaxially to a rotor ring 51 and the radial bearing is achieved by repelling magnetic poles of permanent magnets.
  • control amplifiers 7 and 8 responsible for the tilt control are connected via power amplifiers 70 to series-connected but oppositely wound windings 72 and 73 or 74 and 75.
  • the winding pairs 72 and 73 or 74 and 75 are again arranged diametrically to the axis of rotation.
  • a separate winding 76 is connected to the output of the controller 21, which generates an axial force, while the winding pairs 72 and 73 or 74 and 75 generate tilting moments.
  • This connection can be used, for example, in a magnetic bearing according to FIG. 6.
  • 80 denotes a rotor ring, 81 a stator ring and 82 a passive radial bearing.
  • a radial magnetic field is generated with the help of the magnets 82a and 84, in which an annular coil 85 fixed on the stator side and a sector winding 86 also fixed on the stator side are partially immersed.
  • 6b shows that 4 sector windings 86 and a ring winding 85 are provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

Le palier magnétique, qui est formé rapidement, comporte un stockage radialement passif et un réglage axialement actif. En utilisant seulement quatre structures détectrices et trois amplificateurs de réglage, on crée un palier magnétique permettant, en plus du réglage axial, un réglage supplémentaire sur deux axes d'inclinaison perpendiculaires à l'axe de rotation.
PCT/EP1983/000284 1982-11-05 1983-10-29 Palier magnetique Ceased WO1984001802A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3240809A DE3240809C2 (de) 1982-11-05 1982-11-05 Magnetlager

Publications (1)

Publication Number Publication Date
WO1984001802A1 true WO1984001802A1 (fr) 1984-05-10

Family

ID=6177321

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1983/000284 Ceased WO1984001802A1 (fr) 1982-11-05 1983-10-29 Palier magnetique

Country Status (3)

Country Link
JP (1) JPS60500141A (fr)
DE (1) DE3240809C2 (fr)
WO (1) WO1984001802A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3819205A1 (de) * 1987-12-12 1989-06-22 Teldix Gmbh Lager zur radialen und axialen lagerung eines rotors mit grosser radialer ausdehnung
FR2728738A1 (fr) * 1994-12-26 1996-06-28 Cit Alcatel Ensemble tournant comportant notamment des moyens de sustentation radiaux et une butee axiale magnetique
EP1942282A4 (fr) * 2005-10-28 2009-08-26 Iwaki Co Ltd Palier magnetique hybride

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002527804A (ja) 1998-10-08 2002-08-27 シーメンス アクチエンゲゼルシヤフト 多くの結合された制御量を有する制御対象を調節するための調節装置
DE19846447A1 (de) * 1998-10-08 2000-04-13 Siemens Ag Regeleinrichtung zur Regelung einer Strecke mit mehreren verkoppelten Regelgrößen
FR2797478B1 (fr) * 1999-08-09 2001-10-12 Cit Alcatel Palier magnetique de centrage a commande en basculement de grande amplitude
DE10032440A1 (de) * 2000-07-04 2002-01-17 Schlafhorst & Co W Rotorspinnvorrichtung mit einer berührungslosen passiven radialen Lagerung des Spinnrotors
AT513498B1 (de) * 2013-01-22 2014-05-15 Univ Wien Tech Vorrichtung und Verfahren zur magnetischen Axiallagerung eines Rotors

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2800960A1 (de) * 1977-01-12 1978-07-13 Europ Propulsion Lagerung eines kurzen rotors mit grossem durchmesser

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2263096C3 (de) * 1972-12-22 1982-07-08 Société Européenne de Propulsion, 92800 Puteaux, Hauts-de-Seine Regelschaltung einer magnetischen Lagerung eines Rotors mit zwei magnetischen Lagern
GB1485290A (en) * 1974-01-14 1977-09-08 Sperry Rand Corp Magnetic bearing apparatus
DE2741062A1 (de) * 1977-09-13 1979-03-22 Teldix Gmbh Anordnung zur magnetischen lagerung
EP0049300A1 (fr) * 1980-10-03 1982-04-14 Mitsubishi Precision Co., Ltd. Assemblage d'un élément annulaire à moment, du type à suspension magnétique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2800960A1 (de) * 1977-01-12 1978-07-13 Europ Propulsion Lagerung eines kurzen rotors mit grossem durchmesser

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3819205A1 (de) * 1987-12-12 1989-06-22 Teldix Gmbh Lager zur radialen und axialen lagerung eines rotors mit grosser radialer ausdehnung
DE3819205C2 (de) * 1987-12-12 1999-07-15 Teldix Gmbh Lagerung eines Rotors mit großer radialer Ausdehnung
FR2728738A1 (fr) * 1994-12-26 1996-06-28 Cit Alcatel Ensemble tournant comportant notamment des moyens de sustentation radiaux et une butee axiale magnetique
EP0720272A1 (fr) * 1994-12-26 1996-07-03 Alcatel Cit Ensemble tournant comportant notamment des moyens de sustentation radiaux et une butée axiale magnétique
US5652473A (en) * 1994-12-26 1997-07-29 Alcatel Cit Rotary assembly including in particular radial support means and a magnetic axial abutment
EP1942282A4 (fr) * 2005-10-28 2009-08-26 Iwaki Co Ltd Palier magnetique hybride
US7683514B2 (en) 2005-10-28 2010-03-23 Iwaki Co., Ltd Hybrid magnetic bearing
US7800269B2 (en) 2005-10-28 2010-09-21 Iwaki Co., Ltd. Hybrid magnetic bearing

Also Published As

Publication number Publication date
JPS60500141A (ja) 1985-01-31
DE3240809C2 (de) 1994-02-03
DE3240809A1 (de) 1984-05-10

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