ES2084044T3 - Diseño optimo de imanes permanentes bidimensionales. - Google Patents

Diseño optimo de imanes permanentes bidimensionales.

Info

Publication number
ES2084044T3
ES2084044T3 ES90916617T ES90916617T ES2084044T3 ES 2084044 T3 ES2084044 T3 ES 2084044T3 ES 90916617 T ES90916617 T ES 90916617T ES 90916617 T ES90916617 T ES 90916617T ES 2084044 T3 ES2084044 T3 ES 2084044T3
Authority
ES
Spain
Prior art keywords
cavity
sections
flux
base line
remanences
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 - Lifetime
Application number
ES90916617T
Other languages
English (en)
Inventor
Manlio G Abele
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.)
New York University NYU
Original Assignee
New York University NYU
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 New York University NYU filed Critical New York University NYU
Application granted granted Critical
Publication of ES2084044T3 publication Critical patent/ES2084044T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Linear Motors (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

UNA ESTRUCTURA DE IMAN PERMANENTE (10) TENIENDO AL MENOS UN CIRCUITO DE FLUJO CIRCULANTE, COMPRENDE UNA PRIMERA Y UNA SEGUNDA PLURALIDAD DE SECCIONES DE MATERIAL MAGNETICO UNIFORMEMENTE MAGNETIZADAS (14, 18 Y 12, 16) FORMANDO UNA CAVIDAD DE FORMA POLIGONAL Y TENIENDO UN PUNTO F SITUADO A LO LARGO DE UNA LINEA DE BASE EQUIPOTENCIAL CERO UNIENDO DOS VERTICES CON LA CAVIDAD SIENDO TAL PUNTO LA REFERENCIA PARA UNA FIGURA DE MERITO M CORRESPONDIENTE A UNA FUERZA DE CAMPO MAXIMA Y UNA RAZON MAXIMA DEL VALOR DEL AREA DE MATERIAL MAGNETIZADO AL AREA DE LA CAVIDAD. UNA TERCERA PLURALIDAD DE SECCIONES MAGNETICAS NO IMANTADAS (30, 32) INCLUYEN LA LINEA BASE Y BORDEA LAS PRIMERAS SECCIONES PARA PROPORCIONAR UN CAMINO INDUCTIVO PARA CANALIZAR EL FLUJO Y CERRAR EL CIRCUITO.
ES90916617T 1989-10-19 1990-10-18 Diseño optimo de imanes permanentes bidimensionales. Expired - Lifetime ES2084044T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/424,162 US5119057A (en) 1989-10-19 1989-10-19 Optimum design of two-dimensional permanent magnets

Publications (1)

Publication Number Publication Date
ES2084044T3 true ES2084044T3 (es) 1996-05-01

Family

ID=23681704

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90916617T Expired - Lifetime ES2084044T3 (es) 1989-10-19 1990-10-18 Diseño optimo de imanes permanentes bidimensionales.

Country Status (8)

Country Link
US (1) US5119057A (es)
EP (1) EP0496817B1 (es)
JP (1) JP2804996B2 (es)
AT (1) ATE131951T1 (es)
CA (1) CA2067812A1 (es)
DE (1) DE69024365T2 (es)
ES (1) ES2084044T3 (es)
WO (1) WO1991006963A1 (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1247385B (it) * 1990-07-16 1994-12-12 Esaote Biomedica Magneti permanenti generatori di campi magnetici omogenei, in particolare per magnetic resonance imaging (rappresentazione per risonanza magnetica), e relativo metodo di fabbricazione
US5162771A (en) * 1990-10-01 1992-11-10 New York University Highly efficient yoked permanent magnet
US5107239A (en) * 1991-05-30 1992-04-21 New York University Hybrid permanent magnets
US5285393A (en) * 1991-11-19 1994-02-08 New York University Method for determination of optimum fields of permanent magnet structures with linear magnetic characteristics
US5621324A (en) * 1992-03-18 1997-04-15 Sumitomo Special Metals Company Limited Magnetic field generator for MRI
US5428333A (en) * 1993-01-22 1995-06-27 New York University Method and apparatus for compensation of field distortion in a magnetic structure
US5798680A (en) * 1994-04-15 1998-08-25 New York University Strapped open magnetic structure
US7199689B1 (en) * 2006-01-09 2007-04-03 Brk Wireless Company, Inc High field NMR permanent magnetic structure
RO122019B1 (ro) * 2006-06-30 2008-11-28 Ioan Grosu Jucărie cu dinamică controlată
US20090195248A1 (en) * 2008-02-01 2009-08-06 Wang Nmr Inc. Table-top magnetic resonance imaging apparatus with permanent magnet
IT1395836B1 (it) 2009-10-09 2012-10-26 Esaote Spa Metodo per la realizzazione di un magnete permanente in particolare per scanner mri ed un magnete permanente, in particolare per scanner mri realizzato con detto metodo
JP6473142B2 (ja) * 2013-06-03 2019-02-20 ナナリシス コーポレーション 磁石アセンブリ
CN109856572B (zh) * 2019-04-24 2023-09-22 河北工业大学 一种一维及二维高低频磁特性测量系统
DE102022202399A1 (de) 2022-03-10 2023-09-14 Bruker Biospin Gmbh NMR Permanentmagnet in Halbach-Anordnung basierend auf Segmenten mit regulärer Polyedergeometrie sowie Herstellungsverfahren

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL287237A (es) * 1961-12-27
US3768054A (en) * 1972-04-03 1973-10-23 Gen Electric Low flux leakage magnet construction
US4538130A (en) * 1984-04-23 1985-08-27 Field Effects, Inc. Tunable segmented ring magnet and method of manufacture
NL8402250A (nl) * 1984-07-17 1986-02-17 Philips Nv Kernspin resonantie apparaat met een rechthoekig permanent magnetische magneet.
US4647887A (en) * 1984-12-24 1987-03-03 The United States Of America As Represented By The Secretary Of The Army Lightweight cladding for magnetic circuits
IT8921079A0 (it) * 1989-07-03 1989-07-03 Comec Srl Sistema per la fabbricazione di magneti permanenti senza giochi, generatori di campo magnetico uniforme e relativi magneti permanenti elementari o compositi.

Also Published As

Publication number Publication date
JP2804996B2 (ja) 1998-09-30
EP0496817A4 (en) 1993-03-31
EP0496817B1 (en) 1995-12-20
DE69024365T2 (de) 1996-08-01
ATE131951T1 (de) 1996-01-15
US5119057A (en) 1992-06-02
WO1991006963A1 (en) 1991-05-16
DE69024365D1 (de) 1996-02-01
CA2067812A1 (en) 1991-04-20
EP0496817A1 (en) 1992-08-05
JPH05501940A (ja) 1993-04-08

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