JPS57187912A - Radial anisotropic magnet having multilayer structure - Google Patents

Radial anisotropic magnet having multilayer structure

Info

Publication number
JPS57187912A
JPS57187912A JP7259581A JP7259581A JPS57187912A JP S57187912 A JPS57187912 A JP S57187912A JP 7259581 A JP7259581 A JP 7259581A JP 7259581 A JP7259581 A JP 7259581A JP S57187912 A JPS57187912 A JP S57187912A
Authority
JP
Japan
Prior art keywords
anisotropic magnet
radial anisotropic
radial
multilayer structure
magnet
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.)
Pending
Application number
JP7259581A
Other languages
Japanese (ja)
Inventor
Tadaharu Tomita
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP7259581A priority Critical patent/JPS57187912A/en
Publication of JPS57187912A publication Critical patent/JPS57187912A/en
Pending 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]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/021—Construction of PM

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PURPOSE:To improve the performance of a radial anisotropic magnet by reducing the nonmagnetized part on the magnet in radial multipolar magnetization in combination of cylindrical magnets. CONSTITUTION:A radial anisotropic magnet of multipolar structure is formed in combination of cylindrical magnets having a different diameter. The surfacial magnetic flux of the magnets can be set at 3,200G greater than the normal value of 2,200G. The relationship between the surfacial mangetic flux and rotary speed becomes equivalent to a sine wave curve substantially.
JP7259581A 1981-05-14 1981-05-14 Radial anisotropic magnet having multilayer structure Pending JPS57187912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7259581A JPS57187912A (en) 1981-05-14 1981-05-14 Radial anisotropic magnet having multilayer structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7259581A JPS57187912A (en) 1981-05-14 1981-05-14 Radial anisotropic magnet having multilayer structure

Publications (1)

Publication Number Publication Date
JPS57187912A true JPS57187912A (en) 1982-11-18

Family

ID=13493906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7259581A Pending JPS57187912A (en) 1981-05-14 1981-05-14 Radial anisotropic magnet having multilayer structure

Country Status (1)

Country Link
JP (1) JPS57187912A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133703A (en) * 1983-12-21 1985-07-16 Matsushita Electric Ind Co Ltd Permanent magnet
JPS60134402A (en) * 1983-12-23 1985-07-17 Matsushita Electric Ind Co Ltd Permanent magnet
JPS62172282U (en) * 1986-04-21 1987-10-31
JPS62172283U (en) * 1986-04-17 1987-10-31

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133703A (en) * 1983-12-21 1985-07-16 Matsushita Electric Ind Co Ltd Permanent magnet
JPS60134402A (en) * 1983-12-23 1985-07-17 Matsushita Electric Ind Co Ltd Permanent magnet
JPS62172283U (en) * 1986-04-17 1987-10-31
JPS62172282U (en) * 1986-04-21 1987-10-31

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