JPS57197483A - Noise erasing method for magnetic testing equipment - Google Patents

Noise erasing method for magnetic testing equipment

Info

Publication number
JPS57197483A
JPS57197483A JP8116681A JP8116681A JPS57197483A JP S57197483 A JPS57197483 A JP S57197483A JP 8116681 A JP8116681 A JP 8116681A JP 8116681 A JP8116681 A JP 8116681A JP S57197483 A JPS57197483 A JP S57197483A
Authority
JP
Japan
Prior art keywords
gimbals
noise
shaft
rotation
measured
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
JP8116681A
Other languages
Japanese (ja)
Inventor
Nobuo Sato
Yasuo Matsui
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8116681A priority Critical patent/JPS57197483A/en
Publication of JPS57197483A publication Critical patent/JPS57197483A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
    • G01R33/1215—Measuring magnetisation; Particular magnetometers therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

PURPOSE:To erase the noise for magnetic moment test to improve S/N, by providing a noise erasing coil as one body together with a supporting gimbals for a material to be measured and generating an erasing sine wave magnetic field synchronized with the rotation of a soft magnetic material. CONSTITUTION:An artificial satellite 5 or the like as a material to be measured wich is supported on a gimbals 4 is rotated in the atmosphere of no magnetic field through a shaft 7 connected to the gimbals 4, and a voltage corresponding to generated rotation speed and magnetic moment is measured by a measuring circuit 14. In this case, a noise erasing coil 20 is provided in the center of the gimbals 4 as one body together with the gimbals 4, and a current obtained by adjusting the phase level of a sine wave of one period is supplied to the coil 20 each time the artificial satellite 5 is rotated once synchronously with the rotation of a shaft 7 through a controlling circuit 13 to which rotation information or the like of a motor 8 for turning the shaft 7 is applied, and the magnetic field is so changed that the noise generated by a soft magnetic material included in the gimbals 4 and the shaft 7 is erased. Consequently, a high-precision magnetic moment test is performed with a high S/N.
JP8116681A 1981-05-29 1981-05-29 Noise erasing method for magnetic testing equipment Pending JPS57197483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8116681A JPS57197483A (en) 1981-05-29 1981-05-29 Noise erasing method for magnetic testing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8116681A JPS57197483A (en) 1981-05-29 1981-05-29 Noise erasing method for magnetic testing equipment

Publications (1)

Publication Number Publication Date
JPS57197483A true JPS57197483A (en) 1982-12-03

Family

ID=13738869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8116681A Pending JPS57197483A (en) 1981-05-29 1981-05-29 Noise erasing method for magnetic testing equipment

Country Status (1)

Country Link
JP (1) JPS57197483A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103323797A (en) * 2013-06-26 2013-09-25 上海卫星装备研究所 Non-magnetic rotary table used for measuring magnetic moment of satellite

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49124963A (en) * 1972-09-27 1974-11-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49124963A (en) * 1972-09-27 1974-11-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103323797A (en) * 2013-06-26 2013-09-25 上海卫星装备研究所 Non-magnetic rotary table used for measuring magnetic moment of satellite

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