JPS5566760A - Rotation speed detecting apparatus - Google Patents

Rotation speed detecting apparatus

Info

Publication number
JPS5566760A
JPS5566760A JP13989378A JP13989378A JPS5566760A JP S5566760 A JPS5566760 A JP S5566760A JP 13989378 A JP13989378 A JP 13989378A JP 13989378 A JP13989378 A JP 13989378A JP S5566760 A JPS5566760 A JP S5566760A
Authority
JP
Japan
Prior art keywords
toothed wheel
teeth
rotating
fixed
numbers
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
JP13989378A
Other languages
Japanese (ja)
Inventor
Masahiko Fujita
Kazutoshi Konno
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 JP13989378A priority Critical patent/JPS5566760A/en
Publication of JPS5566760A publication Critical patent/JPS5566760A/en
Pending legal-status Critical Current

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  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)

Abstract

PURPOSE: To highten frequency of rotation speed signal without enlarging toothed wheel sizes by differentiating number of tooth applied in rotating toothed wheel attached on rotating axis of phonomotors and etc., from teeth numbers of fixed toothed wheel confronting with rotating toothed wheel.
CONSTITUTION: On inner surface of rotating toothed wheel 32, made out from magnetic materials and fixed with rotating axis 31 and rotate, set teeth and also fixed toothed wheel 37, made out from magnetic materials and with teeth closely confronted with teeth of rotating toothed wheel, is fixed via permanent magnet 35 onto york plate 36. Set the numbers of teeth in a.m. rotating toothed wheel 32 in difference with that of fixed toothed wheel 37, for example set ratio of numbers for toothed wheel 32 to teeth of toothed wheel 37 in 9:10. By differentiating of teeth numbers like this, get bigger variation volume of magnetic flux and accordingly bigger signal and moreover, can get moderate in constituting accuracy in teeth making.
COPYRIGHT: (C)1980,JPO&Japio
JP13989378A 1978-11-15 1978-11-15 Rotation speed detecting apparatus Pending JPS5566760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13989378A JPS5566760A (en) 1978-11-15 1978-11-15 Rotation speed detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13989378A JPS5566760A (en) 1978-11-15 1978-11-15 Rotation speed detecting apparatus

Publications (1)

Publication Number Publication Date
JPS5566760A true JPS5566760A (en) 1980-05-20

Family

ID=15256052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13989378A Pending JPS5566760A (en) 1978-11-15 1978-11-15 Rotation speed detecting apparatus

Country Status (1)

Country Link
JP (1) JPS5566760A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5788317A (en) * 1980-11-25 1982-06-02 S G:Kk Rotation angle detecting device
JPS59162411A (en) * 1983-03-07 1984-09-13 Mayekawa Mfg Co Ltd Magnetic circuit of rotor of relative displacement angle transducer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5788317A (en) * 1980-11-25 1982-06-02 S G:Kk Rotation angle detecting device
JPH0131126B2 (en) * 1980-11-25 1989-06-23 S G Kk
JPS59162411A (en) * 1983-03-07 1984-09-13 Mayekawa Mfg Co Ltd Magnetic circuit of rotor of relative displacement angle transducer

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