DE102005032675A1 - Active magnetic bearing has four sensors mounted in cross in stator plates which detect position of rotor and control bearing to maintain it in position, sensors being mounted in plane of bearing force - Google Patents
Active magnetic bearing has four sensors mounted in cross in stator plates which detect position of rotor and control bearing to maintain it in position, sensors being mounted in plane of bearing force Download PDFInfo
- Publication number
- DE102005032675A1 DE102005032675A1 DE200510032675 DE102005032675A DE102005032675A1 DE 102005032675 A1 DE102005032675 A1 DE 102005032675A1 DE 200510032675 DE200510032675 DE 200510032675 DE 102005032675 A DE102005032675 A DE 102005032675A DE 102005032675 A1 DE102005032675 A1 DE 102005032675A1
- Authority
- DE
- Germany
- Prior art keywords
- sensors
- bearing
- active magnetic
- rotor
- magnetic bearing
- 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.)
- Withdrawn
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
- F16C32/0446—Determination of the actual position of the moving member, e.g. details of sensors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
Die Erfindung betrifft ein aktives Magnetlager mit integrierter Wegsensorik gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to an active magnetic bearing with integrated displacement sensor according to the preamble of Patent claim 1.
Magnetische Lager erlauben eine berührungs- und verschleißfreie Lagerung von bewegten Teilen. Sie benötigen keine Schmiermittel und können reibungsarm konstruiert werden. Sogenannte aktive Magnetlager mit Elektromagneten benötigen eine aktive Lageregelung, die über Lagesensoren und einen Regelkreis die Ströme der Tragemagnete steuert und Abweichungen des Rotationskörpers aus seiner Soll-Lage entgegenwirkt.magnetic Bearings allow a contact and wear-free Storage of moving parts. You do not need any lubricants and can be constructed with low friction. So-called active magnetic bearings with Electromagnets need one active position control over Position sensors and a control loop controls the currents of the carrying magnets and deviations of the rotational body counteracts from its desired position.
In bekannten aktiven Magnetlagersystemen unterscheidet sich im Allgemeinen der Ort der Wegmessung vom Ort des Kraftangriffs, d.h. die Sensorik ist nicht dort angeordnet, wo die Lagerkraft auf den Rotor wirkt. Es liegt keine sogenannte Kollokation vor. Dem Regler liegt somit nicht die Lageinformation vor, die er eigentlich zur Erzeugung einer Stellgröße für die Lager benötigt. Zwischen dem Sensor-Ort und dem Kraftangriffs-Punkt kann aufgrund der Dynamik des Rotors ein Phasenversatz vorliegen, den der Regler in einem begrenzten Frequenzband ausgleichen muß. Die Reglerauslegung ist dadurch erschwert.In known active magnetic bearing systems is generally different the location of the distance measurement from the location of the force application, i. the sensor is not located where the bearing force acts on the rotor. It there is no so-called collocation. The controller is thus not the position information that he actually used to generate a manipulated variable for the bearings needed. Between the sensor location and the force application point may be due the momentum of the rotor is a phase offset, the controller in a limited frequency band. The regulator design is makes it difficult.
Hiervon ausgehend ist es die Aufgabe der Erfindung, ein aktives Magnetlager zu schaffen, bei welchem eine unkomplizierte Reglerauslegung möglich ist.Of these, Based on the object of the invention, an active magnetic bearing to create, in which an uncomplicated controller design is possible.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.These The object is achieved by the characterizing features of claim 1 solved.
Durch die erfindungsgemäße integrierte Bauweise, also die Unterbringung der Sensoren direkt im Aktor, wird erreicht, dass dem Aktor immer die zur Lage der Welle passende Stellenergie zugeführt wird. Die Reglerauslegung wird dadurch in vorteilhafter Weise wesentlich vereinfacht.By the integrated construction according to the invention, So the placement of the sensors directly in the actuator is achieved that the actor always the matching to the position of the shaft job energy is supplied. The controller design is thereby advantageously essential simplified.
Durch die vorteilhafte gegenüberliegende Anordnung zweier Sensoren an einer Meßachse ist eine Differenzauswertung der Signale möglich, wodurch nichtlineare Sensorkennlinien in guter Näherung linearisiert werden können.By the advantageous opposite arrangement two sensors on a measuring axis is a differential evaluation of the signals possible, creating non-linear Sensor characteristics in a good approximation can be linearized.
Im Hinblick auf die Kosten kann die Verwendung von optischen Aufnehmern aufgrund ihres geringen Preises und der vergleichsweise einfachen Signalaufbereitung vorteilhaft sein.in the In terms of cost, the use of optical pickups due to their low price and the comparatively simple Signal processing be advantageous.
Weitere Merkmale und Vorteile ergeben sich aus den Unteransprüchen in Verbindung mit der Beschreibung.Further Features and advantages emerge from the subclaims in Connection with the description.
Die Erfindung wird nachfolgend anhand der zugehörigen schematischen Zeichnungen näher erläutert. DieThe The invention will be described below with reference to the accompanying schematic drawings explained in more detail. The
In
Die
Die
Sensoren
Die
Sensorsignale werden zu einer Steuerungs-/Regelungseinrichtung geleitet,
welche daraus eine Stellgröße zur entsprechenden
Ansteuerung des Aktors ermittelt, um den Rotor
Die Steuerungs-/Regelungseinrichtung sowie die Verstärker können in vorteilhafter Weise innerhalb des Lagergehäuses angeordnet werden, so dass die Bauteile eine integrative Einheit bilden. In diesem Zusammenhang wird auf die parallele Anmeldung DE (internes AZ des Anmelders: PB04630) verwiesen, welche die Integration der Leistungselektronik innerhalb des Lagergehäuses betrifft.The Control / regulation device and the amplifier can be in an advantageous manner inside the bearing housing be arranged so that the components are an integrative unit form. In this context, the parallel application DE (internal AZ of the applicant: PB04630) referenced the integration the power electronics within the bearing housing concerns.
Aus
der linken Hälfte
der
Werden
jedoch an einer Meßachse
zwei – sich
gegenüberliegende – Sensoren
Als
Wirkprinzipien für
die Sensoren
- 11
- Sensorsensor
- 22
- Wicklungwinding
- 33
- Rotorrotor
- 44
- Statorblechungstator lamination
- 55
- Meßachsenmeasuring axes
- 66
- Aktor-/LagerkraftActuator / bearing force
- 1010
- Rotorrotor
- 1111
- Biege-Eigenform 1. OrdnungBending mode shape 1st order
- 1212
- Biege-Eigenform 3. OrdnungBending mode shape 3rd order
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510032675 DE102005032675A1 (en) | 2005-07-13 | 2005-07-13 | Active magnetic bearing has four sensors mounted in cross in stator plates which detect position of rotor and control bearing to maintain it in position, sensors being mounted in plane of bearing force |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510032675 DE102005032675A1 (en) | 2005-07-13 | 2005-07-13 | Active magnetic bearing has four sensors mounted in cross in stator plates which detect position of rotor and control bearing to maintain it in position, sensors being mounted in plane of bearing force |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005032675A1 true DE102005032675A1 (en) | 2007-01-25 |
Family
ID=37575441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510032675 Withdrawn DE102005032675A1 (en) | 2005-07-13 | 2005-07-13 | Active magnetic bearing has four sensors mounted in cross in stator plates which detect position of rotor and control bearing to maintain it in position, sensors being mounted in plane of bearing force |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005032675A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008023339A1 (en) | 2008-05-13 | 2009-12-03 | Mecatronix Gmbh | Device for floating, transporting and/or positioning of carriers and goods in vacuum and/or clean room, has bearing units, where transmission of signals from bearing unit's position is implemented in form of bus-topology |
WO2010034756A1 (en) * | 2008-09-24 | 2010-04-01 | Abb Research Ltd | A device and a method for measuring a physical property of a magnetic bearing |
EP2843180A2 (en) | 2008-06-04 | 2015-03-04 | Mediabiose GmbH | Blind device for light protection and displaying of information |
US9410554B2 (en) | 2014-04-04 | 2016-08-09 | Solar Turbines Incorporated | Controlling a gas compressor having multiple magnetic bearings |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2537597A1 (en) * | 1975-08-23 | 1977-03-03 | Padana Ag | ELECTROMAGNETIC STORAGE DEVICE |
DE2656469A1 (en) * | 1976-12-09 | 1978-06-15 | Licentia Gmbh | Radial active magnetic bearing - has higher frequency sensor current superimposed on driving frequency current |
EP0178972A1 (en) * | 1984-09-19 | 1986-04-23 | SOCIETE EUROPEENNE DE PROPULSION (S.E.P.) Société Anonyme dite: | Magnetic device for detecting radial displacements of a rotor |
EP0563928A2 (en) * | 1992-04-01 | 1993-10-06 | Ebara Corporation | Magnetic bearing apparatus |
JPH07238928A (en) * | 1994-02-25 | 1995-09-12 | Toshiba Corp | Magnetic bearing device |
DE19523826A1 (en) * | 1995-06-30 | 1997-01-02 | Elektrische Automatisierungs U | Magnetic bearing incorporating capacitive monitor for high-speed shaft |
US5864303A (en) * | 1996-06-14 | 1999-01-26 | Rosen Motors L.P. | Capacitive sensor system for magnetic bearings |
DE69503613T2 (en) * | 1994-02-28 | 1999-02-25 | Soc D Mecanique Magnetique | ACTIVE MAGNETIC BEARING WITH POSITION SELF DETECTING |
DE19860814A1 (en) * | 1998-12-30 | 2000-07-20 | Teldix Gmbh | Satellite gyro stabilized roller bearing active centering technique having magnetically held rotor and measured gap magnetic fluid value drive current fed back minimizing magnetic flux density variations. |
WO2001088397A1 (en) * | 2000-05-16 | 2001-11-22 | The Texas A & M University System | System and method for measuring dynamic loads in a magnetic bearing |
WO2002103216A1 (en) * | 2001-06-15 | 2002-12-27 | Societe De Mecanique Magnetique | Active magnetic bearing with integrated detectors |
JP2003148468A (en) * | 2001-11-08 | 2003-05-21 | Koyo Seiko Co Ltd | Control type magnetic bearing |
JP2005076792A (en) * | 2003-09-02 | 2005-03-24 | Boc Edwards Kk | Magnetic bearing device |
-
2005
- 2005-07-13 DE DE200510032675 patent/DE102005032675A1/en not_active Withdrawn
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2537597A1 (en) * | 1975-08-23 | 1977-03-03 | Padana Ag | ELECTROMAGNETIC STORAGE DEVICE |
DE2656469A1 (en) * | 1976-12-09 | 1978-06-15 | Licentia Gmbh | Radial active magnetic bearing - has higher frequency sensor current superimposed on driving frequency current |
EP0178972A1 (en) * | 1984-09-19 | 1986-04-23 | SOCIETE EUROPEENNE DE PROPULSION (S.E.P.) Société Anonyme dite: | Magnetic device for detecting radial displacements of a rotor |
EP0563928A2 (en) * | 1992-04-01 | 1993-10-06 | Ebara Corporation | Magnetic bearing apparatus |
JPH07238928A (en) * | 1994-02-25 | 1995-09-12 | Toshiba Corp | Magnetic bearing device |
DE69503613T2 (en) * | 1994-02-28 | 1999-02-25 | Soc D Mecanique Magnetique | ACTIVE MAGNETIC BEARING WITH POSITION SELF DETECTING |
DE19523826A1 (en) * | 1995-06-30 | 1997-01-02 | Elektrische Automatisierungs U | Magnetic bearing incorporating capacitive monitor for high-speed shaft |
US5864303A (en) * | 1996-06-14 | 1999-01-26 | Rosen Motors L.P. | Capacitive sensor system for magnetic bearings |
DE19860814A1 (en) * | 1998-12-30 | 2000-07-20 | Teldix Gmbh | Satellite gyro stabilized roller bearing active centering technique having magnetically held rotor and measured gap magnetic fluid value drive current fed back minimizing magnetic flux density variations. |
WO2001088397A1 (en) * | 2000-05-16 | 2001-11-22 | The Texas A & M University System | System and method for measuring dynamic loads in a magnetic bearing |
WO2002103216A1 (en) * | 2001-06-15 | 2002-12-27 | Societe De Mecanique Magnetique | Active magnetic bearing with integrated detectors |
JP2003148468A (en) * | 2001-11-08 | 2003-05-21 | Koyo Seiko Co Ltd | Control type magnetic bearing |
JP2005076792A (en) * | 2003-09-02 | 2005-03-24 | Boc Edwards Kk | Magnetic bearing device |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008023339A1 (en) | 2008-05-13 | 2009-12-03 | Mecatronix Gmbh | Device for floating, transporting and/or positioning of carriers and goods in vacuum and/or clean room, has bearing units, where transmission of signals from bearing unit's position is implemented in form of bus-topology |
DE202008017717U1 (en) | 2008-05-13 | 2010-09-23 | Mecatronix Gmbh | Device for hovering, transporting and / or positioning of goods loaded carriers |
EP2843180A2 (en) | 2008-06-04 | 2015-03-04 | Mediabiose GmbH | Blind device for light protection and displaying of information |
WO2010034756A1 (en) * | 2008-09-24 | 2010-04-01 | Abb Research Ltd | A device and a method for measuring a physical property of a magnetic bearing |
US9410554B2 (en) | 2014-04-04 | 2016-08-09 | Solar Turbines Incorporated | Controlling a gas compressor having multiple magnetic bearings |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |