DE4309721A1 - Method for determining the air gap between magnets and stators of linear motor drives - Google Patents

Method for determining the air gap between magnets and stators of linear motor drives

Info

Publication number
DE4309721A1
DE4309721A1 DE19934309721 DE4309721A DE4309721A1 DE 4309721 A1 DE4309721 A1 DE 4309721A1 DE 19934309721 DE19934309721 DE 19934309721 DE 4309721 A DE4309721 A DE 4309721A DE 4309721 A1 DE4309721 A1 DE 4309721A1
Authority
DE
Germany
Prior art keywords
stators
distance
air gap
magnets
measuring
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Withdrawn
Application number
DE19934309721
Other languages
German (de)
Inventor
Georg N Dipl Ing Puerner
Doris Mohr
Giorgio Ban
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.)
Magnetbahn GmbH
Original Assignee
Magnetbahn 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 Magnetbahn GmbH filed Critical Magnetbahn GmbH
Priority to DE19934309721 priority Critical patent/DE4309721A1/en
Publication of DE4309721A1 publication Critical patent/DE4309721A1/en
Withdrawn legal-status Critical Current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
    • B60L13/06—Means to sense or control vehicle position or attitude with respect to railway
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)

Abstract

In a method for determining the distance between the magnets on the hovering rigs and the stators in linear motor routes in which the air gap between the magnets and stators can be varied depending on the loading of the hovering rig there is provision for the distances from a specific point to the lower edge of the magnet carrier and to the underside of the stators to be measured and for the searched-for size of the air gap to be calculated from the measurements.

Description

Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zur Messung des Luftspalts zwischen Magneten und Statoren von Linearmotorantrieben. Aus der DE-OS 31 07 341 ist ein derartiger Antrieb bekannt, bei dem der Luftspalt zwischen den Magneten auf den Schwebegestellen und den Statoren entlang der Fahrstrecke je nach Schwebegestellbe­ lastung verändert wird.The present invention relates to a method and a Device for measuring the air gap between magnets and Stators of linear motor drives. From DE-OS 31 07 341 such a drive is known in which the air gap between the magnets on the suspension racks and the Stators along the route depending on the suspension system load is changed.

Die vorliegende Erfindung hat die Aufgabe, ein Verfahren anzugeben, mit dessen Hilfe der Luft­ spalt zwischen dem Stator und den Magneten gemessen werden kann. Diese Aufgabe wird durch ein Verfahren nach Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen des Verfahrens und Vor­ richtungen zu seiner Ausführung sind den Unteransprüchen zu entnehmen.The present invention has the Task to specify a method by means of which air gap between the stator and the magnets can be measured can. This object is achieved by a method according to claim 1 solved. Advantageous embodiments of the method and before directions for its execution are to the subclaims remove.

Erfindungsgemäß wird der Abstand von einem bestimmten Punkt zur Unterkante des Magnetträgers, auf dem die Magnete befestigt sind, gemessen. Weiterhin wird von diesem bestimm­ ten Punkt oder einem Punkt mit konstantem Abstand zu diesem bestimmten Punkt der Abstand zur Unterseite der Statoren gemessen und dann der Luftspalt mit Hilfe der beiden Messun­ gen errechnet.According to the invention, the distance from a certain point to the lower edge of the magnet carrier on which the magnets attached, measured. Furthermore, this is determined th point or a point at a constant distance from it certain point the distance to the bottom of the stators measured and then the air gap with the help of the two measurements calculated.

Die Erfindung wird im folgenden an Hand der Zeichnungen für besonders bevorzugte Beispiele erläutert:The invention is based on the drawings for particularly preferred examples explained:

Fig. 1 zeigt die Ansicht eines aus der DE-OS 31 07 341 bekannten Schwebegestells eines Linearmotorfahr­ gestells, Fig. 1 shows the view of a known from DE-OS 31 07 341 known suspended frame of a linear motor driving the rack,

Fig. 2 zeigt die erfindungsgemäße Meßvorrichtung für die Anwendung in einer Justiervorrichtung für Schwebe­ gestelle in einem Teilquerschnitt, Fig. 2 shows the measuring apparatus according to the invention for use in an adjustment device for sliding racks in partial cross-section,

Fig. 3 zeigt eine erfindungsgemäße Meßvorrichtung für die Anwendung auf dem Schwebegestell während der Fahrt in einem Teilquerschnitt, Fig. 3 shows a measuring apparatus according to the invention for application to the suspension frame during travel in partial cross-section,

Fig. 4 zeigt eine weitere erfindungsgemäße Meßvorrichtung für die Anwendung auf dem Schwebegestell während der Fahrt in einem Teilquerschnitt. Fig. 4 shows a further measuring device according to the invention for use on the floating frame while driving in a partial cross section.

Auf beiden Seiten des Schwebegestells 1 ist jeweils ein Magnetträger 2 mit Permanentmagneten 3 angebracht und über Querträger 4 und Rahmen 5 verbunden. Die Permanentmagnete 3 bewegen und tragen zumindest teilweise das Schwebegestell 1 entlang des Magnetbahnfahrwegs durch die in den in Fig. 2 dargestellten Langstatoren 23 erzeugten Wanderfelder fort. Zwischen den beiden Querträgern 4 befindet sich in der Mitte die Lastwippe 7 oberhalb des Rahmens 5. Die Lastwippe 7 besteht aus den Platten 12, den doppelseitigen Querhebeln 10 und den Federn 11. Der nicht dargestellte Nutzlastaufbau ist auf den Platten 12 befestigt. Wenn sich das Schwebegestell 1 auf dem Magnetbahnfahrweg 30 oder der Justiervorrichtung 20 befindet, berühren die oberen und unteren Vertikalführungs­ rollen 8 den horizontalen Obergurt 6. Sobald die Lastwippe 7 stärker belastet wird, werden die Vertikalführungsrollen 8 über die Steuerhebel 9 und Doppelachse 13 nach unten gedrückt. Dadurch wird der Rahmen 5 und die Magnetleiste 2 angehoben und so der Luftspalt L zwischen den Magneten 3 und den Langstatoren 23 verringert. Somit wird die Tragkraft zwischen den Magneten 3 und den Langstatoren 23 erhöht. Bei einem Entlastung der Lastwippe 7 läuft der Vorgang entspre­ chend umgekehrt ab.A magnetic carrier 2 with permanent magnets 3 is attached to both sides of the floating frame 1 and connected via cross members 4 and frame 5 . The permanent magnets 3 move and carry at least partially the floating frame 1 along the magnetic path travel path through the traveling fields generated in the long stators 23 shown in FIG. 2. The load rocker 7 is located in the middle between the two cross beams 4 above the frame 5 . The load rocker 7 consists of the plates 12 , the double-sided cross levers 10 and the springs 11 . The payload structure, not shown, is attached to the plates 12 . When the floating frame 1 is on the magnetic track path 30 or the adjusting device 20 , the upper and lower vertical guide rollers 8 touch the horizontal upper flange 6 . As soon as the load rocker 7 is loaded more heavily, the vertical guide rollers 8 are pressed down via the control levers 9 and the double axis 13 . As a result, the frame 5 and the magnetic strip 2 are raised and the air gap L between the magnets 3 and the long stators 23 is reduced. The load-bearing capacity between the magnets 3 and the long stators 23 is thus increased. When the load rocker 7 is relieved, the process accordingly takes place in reverse.

In Fig. 2 ist ein Teilquerschnitt einer Seite der Justiervor­ richtung 20 und des Schwebegestells 1 dargestellt. Unterhalb des Obergurtes 6 der Justiervorrichtung 20 befindet sich der Stator 23. Der Stator 23 und die Permanentmagneten 3 des Schwebegestells 1 ziehen sich an und werden durch die in Fig. 1 dargestellten Führungsrollen 8, Steuerhebel 9 und Doppel­ achsen 13 in einem der Belastung der Lastwippe 7 entsprechend in Abstand gehalten. Im unteren Bereich der Justiervorrich­ tung 20 ist erfindungsgemäß eine Führungseinrichtung 60 für eine Meßvorrichtung 70 angebracht. Vorteilhaft ist es, die Führungseinrichtung 60 parallel zum Stator 23 zu verlegen, daß so der Abstand zwischen dem Stator 23 und der Führungs­ einrichtung 60 nur einmal gemessen werden braucht. Erfin­ dungsgemäß wird der Abstand zwischen der Führungseinrichtung 60 und der Unterseite des Magnetträgers 2 mit der Meßvorrich­ tung 70 gemessen und aus diesem Wert und dem ermittelten Abstand zwischen der Führungseinrichtung 60 und dem Stator 23 der Luftspalt L berechnet. Diese Vorgehensweise wird für mehrere Punkte entlang der Führungseinrichtung 60 wiederholt. Wenn die Meßpunkte an der Unterseite des Magnetträgers 2 nicht fluchtend sondern versetzt gewählt werden, können zusätzliche Verdrehungen des Magnetträgers 2 ermittelt werden.In Fig. 2, a partial cross section of one side of the Justiervor direction 20 and the suspension frame 1 is shown. The stator 23 is located below the upper chord 6 of the adjusting device 20 . The stator 23 and the permanent magnet 3 of the floating frame 1 attract each other and by the axes shown in FIG. 1, the guide rollers 8, 9 and double control lever 13 in one of the load of the load jack 7 held in corresponding distance. In the lower region of the Justiervorrich device 20 , a guide device 60 for a measuring device 70 is attached according to the invention. It is advantageous to move the guide device 60 parallel to the stator 23 so that the distance between the stator 23 and the guide device 60 only needs to be measured once. Inven tion according to the distance between the guide device 60 and the underside of the magnetic carrier 2 with the Meßvorrich device 70 is measured and calculated from this value and the determined distance between the guide device 60 and the stator 23 of the air gap L. This procedure is repeated for several points along the guide device 60 . If the measuring points on the underside of the magnet carrier 2 are chosen to be offset rather than in alignment, additional rotations of the magnet carrier 2 can be determined.

In Fig. 3 ist ein Teilquerschnitt des Schwebegestells 1 im Zusammenwirken mit dem Stator 23 und dem Obergurt 6 entlang des Fahrwegs 30 dargestellt. Der Fahrweg 30 ist grundsätzlich wie die Justiervorrichtung 20 aufgebaut. Die Erfindung zeich­ net sich in der hier dargestellten Ausführungsform dadurch aus, daß die Meßvorrichtung 71 fest am Rahmen 5 des Schwebe­ gestells 1 montiert ist und dadurch einen konstanten Abstand zu den Magnetträger 2 und den Permanentmagneten 3 aufweist. Die Meßvorrichtung 71 mißt den Abstand zur Unterseite des Stators 23. Dann wird aus diesem Wert und dem bekannten Abstand zur Oberseite der Permanentmagnete 3 der Luftspalt L zwischen dem Stator 23 und den Permanentmagneten 3 berechnet. FIG. 3 shows a partial cross section of the floating frame 1 in cooperation with the stator 23 and the upper flange 6 along the travel path 30 . The travel path 30 is basically constructed like the adjustment device 20 . The invention is characterized in the embodiment shown here in that the measuring device 71 is fixedly mounted on the frame 5 of the suspension frame 1 and thereby has a constant distance from the magnet carrier 2 and the permanent magnet 3 . The measuring device 71 measures the distance to the underside of the stator 23 . Then, and the known distance to the upper side of the permanent magnets 3 is calculated, the air gap L between the stator 23 and the permanent magnet 3 from this value.

In Fig. 4 ist eine weitere Ausgestaltung der Erfindung für die Anwendung der LuftspaltMessung auf dem Fahrweg 30. Die Meßvorrichtungen 72, 73 sind an der Doppelachse 13 des Schwe­ begestells 1 befestigt. Die Meßvorrichtung 72 mißt den Abstand zur Unterseite des Stators 23, während die Meßvor­ richtung 73 den Abstand zur Unterkante des Magnetträgers 2 mißt. Aus beiden erhaltenen Meßwerten wird der Luftspalt L errechnet. Durch diesen, im Vergleich zu der Anordnung aus Fig. 3 höheren Aufwand, ist es möglich festzustellen, ob sich der Luftspalt L wegen veränderter Abmessungen der einzelnen Funktionsteile insbesondere des Abstands der Unterkante des Obergurtes 6 zur Unterkante des Stators 23 aufgrund der zulässigen Toleranzen geändert hat. Vorteilhafterweise werden pro Seite des Schwebegestells 1 zwei der in Fig. 3 bzw. 4 beschriebenen Meßanordnungen angebracht. FIG. 4 shows a further embodiment of the invention for the application of the air gap measurement on the route 30 . The measuring devices 72 , 73 are attached to the double axis 13 of the welding frame 1 . The measuring device 72 measures the distance to the underside of the stator 23 , while the Meßvor direction 73 measures the distance to the lower edge of the magnet carrier 2 . The air gap L is calculated from the two measured values obtained. This, compared to the arrangement of Fig. 3, higher effort, it is possible to determine whether the air gap L has changed due to the permissible tolerances due to changed dimensions of the individual functional parts, in particular the distance between the lower edge of the upper flange 6 and the lower edge of the stator 23 . Advantageously, the floating frame 1 are mounted, two of the measuring arrangements described in FIG. 3 or 4 per side.

Claims (8)

1. Verfahren zur Ermittlung des Abstands zwischen Magneten auf den Schwebegestellen und den Statoren in Linear­ motorfahrstrecken, bei denen der Luftspalt zwischen den Magneten und Statoren, je nach Schwebegestellbelastung, veränderbar ist, dadurch gekennzeichnet, daß von bestimmten Punkten die Abstände zur Unterkante des Magnetträgers (2) und zur Unterseite der Statoren (23) gemessen werden und aus beiden Messungen die gesuchte Größe des Luftspalts berechnet wird.1.Procedure for determining the distance between magnets on the levitation frames and the stators in linear motor paths, in which the air gap between the magnets and stators can be changed, depending on the load on the levitation frame, characterized in that the distances to the lower edge of the magnet carrier from certain points ( 2 ) and to the underside of the stators ( 23 ) and the size of the air gap sought is calculated from both measurements. 2. Vorrichtung zur Ausführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß eine Meßvorrichtung (70) in eine Justiervorrichtung (20) entlang einer Führungs­ einrichtung (60) verschiebbar ist und die Messungen für mehrere Punkte wiederholt werden.2. Device for performing the method according to claim 1, characterized in that a measuring device ( 70 ) in an adjusting device ( 20 ) along a guide device ( 60 ) is displaceable and the measurements are repeated for several points. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Führungseinrichtung (60) einen konstanten Abstand zu den Statoren (23) aufweist.3. Apparatus according to claim 2, characterized in that the guide device ( 60 ) is at a constant distance from the stators ( 23 ). 4. Vorrichtung und Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Meßpunkte am Magnet­ träger (2) versetzt angeordnet sind.4. The device and method according to claim 2 or 3, characterized in that the measuring points on the magnetic carrier ( 2 ) are arranged offset. 5. Vorrichtung zur Ausführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß eine Meßvorrichtung (71) am Schwebegestell (1) mit konstantem Abstand zur Magnet­ leiste (2) befestigt ist und den Abstand zur Unterseite des Stators (23) mißt.5. A device for carrying out the method according to claim 1, characterized in that a measuring device ( 71 ) on the floating frame ( 1 ) is attached at a constant distance to the magnetic bar ( 2 ) and measures the distance to the underside of the stator ( 23 ). 6. Vorrichtung zur Ausführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß zwei Meßvorrichtungen (73, 72) an der Doppelachse (13) des Schwebegestells (1) befestigt sind und die erste Meßvorrichtung (73) den Abstand zur Unterkante des Magnetträgers (2) mißt und die zweite Meßvorrichtung (72) den Abstand zur Unter­ kante des Stators (23) mißt.6. A device for carrying out the method according to claim 1, characterized in that two measuring devices ( 73 , 72 ) on the double axis ( 13 ) of the floating frame ( 1 ) are attached and the first measuring device ( 73 ) the distance to the lower edge of the magnet carrier ( 2nd ) measures and the second measuring device ( 72 ) measures the distance to the lower edge of the stator ( 23 ). 7. Vorrichtung nach einem der vorgehenden Ansprüche, dadurch gekennzeichnet, daß als Meßvorrichtung ein Weg­ aufnehmer verwendet wird.7. Device according to one of the preceding claims, characterized in that a way as a measuring device sensor is used. 8. Vorrichtung nach Anspruch 2 bis 6, dadurch gekennzeich­ net, daß als Meßvorrichtung ein Laserabstandsmesser ver­ wendet wird.8. The device according to claim 2 to 6, characterized in net that a laser distance meter ver as a measuring device is applied.
DE19934309721 1993-03-25 1993-03-25 Method for determining the air gap between magnets and stators of linear motor drives Withdrawn DE4309721A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934309721 DE4309721A1 (en) 1993-03-25 1993-03-25 Method for determining the air gap between magnets and stators of linear motor drives

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Application Number Priority Date Filing Date Title
DE19934309721 DE4309721A1 (en) 1993-03-25 1993-03-25 Method for determining the air gap between magnets and stators of linear motor drives

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DE4309721A1 true DE4309721A1 (en) 1994-09-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104457580A (en) * 2013-09-25 2015-03-25 上海信耀电子有限公司 Full-automatic detection device for characteristics of automobile dimming motor
CN110332899A (en) * 2019-08-21 2019-10-15 国家电网有限公司 A kind of generator air gap measuring device and its measurement method

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2041553B2 (en) * 1970-08-21 1972-09-21 Krauss-Maffei AG, 8000 München ARRANGEMENT FOR AN ELECTROMAGNET FLOATING AT A DISTANCE FROM A RAIL
DE2148942A1 (en) * 1971-09-30 1973-04-05 Krauss Maffei Ag OPTICAL DEVICE FOR GENERATING AN ELECTRICAL SIGNAL DEPENDING ON THE RELATIVE POSITION OF A ROAD-BASED HOVER VEHICLE IN RELATION TO A TRAIL ELEMENT
DE2148946A1 (en) * 1971-09-30 1973-04-05 Krauss Maffei Ag ARRANGEMENT FOR CAPACITIVE DISTANCE MEASUREMENT
DE2157011A1 (en) * 1971-11-17 1973-05-24 Krauss Maffei Ag DISTANCE MEASURING ARRANGEMENT FOR ELECTROMAGNETIC SUPPORTING OR GUIDING SYSTEMS FOR HOVER VEHICLES
DE2446851A1 (en) * 1974-10-01 1976-04-08 Messerschmitt Boelkow Blohm Magnet guided rail hover vehicle - has magnetic current of carrier or guide magnets introduced as special quantitative dimension
DE2719034A1 (en) * 1977-02-26 1978-08-31 Japan Airlines Co ELECTROMAGNETIC SUSPENSION AND GUIDANCE SYSTEM FOR A MAGNETICALLY HANGED VEHICLE
SU694411A1 (en) * 1977-07-04 1979-10-30 Киевский Ордена Ленина Политехнический Институт Им. 50-Летия Великой Октябрьской Социалистической Революции Arrangement for the stabilization of magnetic suspension of a vehicle
US4198164A (en) * 1976-10-07 1980-04-15 Ensco, Inc. Proximity sensor and method and apparatus for continuously measuring rail gauge
DE2916289B1 (en) * 1979-04-21 1980-05-14 Messerschmitt Boelkow Blohm Measurement of the magnetic flux change and the air gap size of an air gap between an electromagnet and a ferromagnetic material
SU779127A1 (en) * 1978-12-26 1980-11-15 Днепропетровское Отделение Института Механики Ан Украинской Сср Device for controlling the clearance between carriage and ferromagnetic rail of magnetic-suspension vehicle track
DE3104320A1 (en) * 1980-02-11 1981-12-17 General Electric Co., Schenectady, N.Y. "DEVICE AND METHOD FOR OPTICAL DISTANCE DETERMINATION"
DE3107341A1 (en) * 1981-02-26 1982-09-02 Magnet-Bahn Gmbh, 8130 Starnberg VEHICLE THAT CAN BE HELD TO A DRIVEWAY BY MEANS OF AN ATTRACTING MAGNETIC DEVICE
DE3021809C2 (en) * 1980-06-11 1984-10-11 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Control arrangement for levitation control of a magnetically supported levitation vehicle
DE3435628A1 (en) * 1984-09-28 1986-04-10 Wolfgang Dr.-Ing. 3000 Hannover Zeggert Device for the contact-free measurement of the air-gap width between the rotor and stator of electrical machines
DE3244420C2 (en) * 1982-12-01 1990-10-18 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen, De

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2041553B2 (en) * 1970-08-21 1972-09-21 Krauss-Maffei AG, 8000 München ARRANGEMENT FOR AN ELECTROMAGNET FLOATING AT A DISTANCE FROM A RAIL
DE2148942A1 (en) * 1971-09-30 1973-04-05 Krauss Maffei Ag OPTICAL DEVICE FOR GENERATING AN ELECTRICAL SIGNAL DEPENDING ON THE RELATIVE POSITION OF A ROAD-BASED HOVER VEHICLE IN RELATION TO A TRAIL ELEMENT
DE2148946A1 (en) * 1971-09-30 1973-04-05 Krauss Maffei Ag ARRANGEMENT FOR CAPACITIVE DISTANCE MEASUREMENT
DE2157011A1 (en) * 1971-11-17 1973-05-24 Krauss Maffei Ag DISTANCE MEASURING ARRANGEMENT FOR ELECTROMAGNETIC SUPPORTING OR GUIDING SYSTEMS FOR HOVER VEHICLES
DE2446851A1 (en) * 1974-10-01 1976-04-08 Messerschmitt Boelkow Blohm Magnet guided rail hover vehicle - has magnetic current of carrier or guide magnets introduced as special quantitative dimension
US4198164A (en) * 1976-10-07 1980-04-15 Ensco, Inc. Proximity sensor and method and apparatus for continuously measuring rail gauge
DE2719034A1 (en) * 1977-02-26 1978-08-31 Japan Airlines Co ELECTROMAGNETIC SUSPENSION AND GUIDANCE SYSTEM FOR A MAGNETICALLY HANGED VEHICLE
SU694411A1 (en) * 1977-07-04 1979-10-30 Киевский Ордена Ленина Политехнический Институт Им. 50-Летия Великой Октябрьской Социалистической Революции Arrangement for the stabilization of magnetic suspension of a vehicle
SU779127A1 (en) * 1978-12-26 1980-11-15 Днепропетровское Отделение Института Механики Ан Украинской Сср Device for controlling the clearance between carriage and ferromagnetic rail of magnetic-suspension vehicle track
DE2916289B1 (en) * 1979-04-21 1980-05-14 Messerschmitt Boelkow Blohm Measurement of the magnetic flux change and the air gap size of an air gap between an electromagnet and a ferromagnetic material
DE3104320A1 (en) * 1980-02-11 1981-12-17 General Electric Co., Schenectady, N.Y. "DEVICE AND METHOD FOR OPTICAL DISTANCE DETERMINATION"
DE3021809C2 (en) * 1980-06-11 1984-10-11 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Control arrangement for levitation control of a magnetically supported levitation vehicle
DE3107341A1 (en) * 1981-02-26 1982-09-02 Magnet-Bahn Gmbh, 8130 Starnberg VEHICLE THAT CAN BE HELD TO A DRIVEWAY BY MEANS OF AN ATTRACTING MAGNETIC DEVICE
DE3244420C2 (en) * 1982-12-01 1990-10-18 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen, De
DE3435628A1 (en) * 1984-09-28 1986-04-10 Wolfgang Dr.-Ing. 3000 Hannover Zeggert Device for the contact-free measurement of the air-gap width between the rotor and stator of electrical machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104457580A (en) * 2013-09-25 2015-03-25 上海信耀电子有限公司 Full-automatic detection device for characteristics of automobile dimming motor
CN104457580B (en) * 2013-09-25 2017-03-22 上海信耀电子有限公司 Full-automatic detection device for characteristics of automobile dimming motor
CN110332899A (en) * 2019-08-21 2019-10-15 国家电网有限公司 A kind of generator air gap measuring device and its measurement method

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