JPS57184915A - Rotary magnetic encorder - Google Patents

Rotary magnetic encorder

Info

Publication number
JPS57184915A
JPS57184915A JP6831381A JP6831381A JPS57184915A JP S57184915 A JPS57184915 A JP S57184915A JP 6831381 A JP6831381 A JP 6831381A JP 6831381 A JP6831381 A JP 6831381A JP S57184915 A JPS57184915 A JP S57184915A
Authority
JP
Japan
Prior art keywords
rotary magnetic
encorder
magnetic disc
disc
gap delta
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
JP6831381A
Other languages
Japanese (ja)
Inventor
Katsuyoshi Tamura
Osamu Yamamoto
Hiromi Kanai
Kozo Odawara
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 JP6831381A priority Critical patent/JPS57184915A/en
Publication of JPS57184915A publication Critical patent/JPS57184915A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)

Abstract

PURPOSE:To obtain a rotary magnetic encorder in which the gap between a rotary magnetic disc and a magnetism detection element is kept constantly by projecting the fixed perimeter of the magnetism detection element in the form of a smoothly curved face on the basis of the rotary magnetic disc. CONSTITUTION:In a housing 3, a rotary magnetic disc 1 and a magnetic resistance element 2 are provided in mutually facing manner, and the fixed perimeter of the magnetic resistance element 2 is projected in the form of a smoothly curved face. Thus, when fixing them with a comparatively small gap delta, even when the rotary magnetic disc 1 is inclined, the gap delta does not become smaller than deltamin or larger than deltamax because the peripheral portion of the disc comes into contact with the spacer 3a. Therefore, the gap delta can be kept constantly.
JP6831381A 1981-05-08 1981-05-08 Rotary magnetic encorder Pending JPS57184915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6831381A JPS57184915A (en) 1981-05-08 1981-05-08 Rotary magnetic encorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6831381A JPS57184915A (en) 1981-05-08 1981-05-08 Rotary magnetic encorder

Publications (1)

Publication Number Publication Date
JPS57184915A true JPS57184915A (en) 1982-11-13

Family

ID=13370194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6831381A Pending JPS57184915A (en) 1981-05-08 1981-05-08 Rotary magnetic encorder

Country Status (1)

Country Link
JP (1) JPS57184915A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3312566A1 (en) * 2016-10-24 2018-04-25 SICK STEGMANN GmbH Rotary encoder to measure a variable of a rotating object

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3312566A1 (en) * 2016-10-24 2018-04-25 SICK STEGMANN GmbH Rotary encoder to measure a variable of a rotating object

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