JPH03104858U - - Google Patents

Info

Publication number
JPH03104858U
JPH03104858U JP1990011437U JP1143790U JPH03104858U JP H03104858 U JPH03104858 U JP H03104858U JP 1990011437 U JP1990011437 U JP 1990011437U JP 1143790 U JP1143790 U JP 1143790U JP H03104858 U JPH03104858 U JP H03104858U
Authority
JP
Japan
Prior art keywords
rotor magnet
magnetized part
magnetized
speed detection
coil pattern
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.)
Granted
Application number
JP1990011437U
Other languages
English (en)
Other versions
JPH0733163Y2 (ja
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 filed Critical
Priority to JP1990011437U priority Critical patent/JPH0733163Y2/ja
Priority to EP91300979A priority patent/EP0441615B1/en
Priority to DE69108952T priority patent/DE69108952T2/de
Priority to US07/651,985 priority patent/US5130649A/en
Publication of JPH03104858U publication Critical patent/JPH03104858U/ja
Application granted granted Critical
Publication of JPH0733163Y2 publication Critical patent/JPH0733163Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Description

【図面の簡単な説明】
第１図、第３図及び第４図は夫々本考案の第１
乃至第３実施例の回転位相検出器付き速度検出装
置を構成するロータマグネツトの着磁状態を示す
模式的平面図、第２図Ａ，Ｂは夫々本考案の第１
、第２実施例装置における無着磁部の形状回析用
原理図、第５図は従来装置に用いられるロータマ
グネツトの模式的平面図、第６図Ａはロータマグ
ネツトのうちＰＵ着磁部付近を直線状に延ばして
示す模式図、同図ＢはコイルパターンのうちＰＵ
パターン付近を同図Ａに対応させて示す模式図、
第７図Ａ，Ｂは夫々ＦＧコイルパターン及びＰＵ
コイルパターンにて得られるＦＧ信号及びＰＵ信
号の信号波形図、第８図はエンコーダエラーの発
生原因説明用原理図、第９図はエンコーダエラー
発生の計算値（理論値）と実測値を示す相間図、
第１０図は従来例及び本考案各実施例を構成する
ロータマグネツトにおけるエンコーダエラーの測
定図、第１１図は上記従来例、各実施例を構成す
るロータマグネツトによるＦＧパターンからのＦ
Ｇ信号出力測定図、第１２図は同じくＰＵノイズ
の測定図、第１３図は同じくＰＵ信号の出力レベ
ルの測定図である。 ２……コイルパターン、５……ＰＵ着磁部、６
……ＦＧコイルパターン（ＦＧパターン）、７…
…ＰＵコイルパターン（ＰＵパターン）、８〜１
０……ＦＧ着磁部、１１〜１３……ロータマグネ
ツト、１４〜１６……無着磁部、１４ｃ〜１６ｃ
……中央部。

Claims (1)

  1. 【実用新案登録請求の範囲】 円周方向に多数の磁極が形成されるロータマグ
    ネツトと、該ロータマグネツトに対向して相対的
    に回転移動する信号検出用コイルパターンを備え
    、 上記ロータマグネツトの一部に位相検出用着磁
    部を形成すると共に、該位相検出用着磁部以外の
    ロータマグネツトに速度検出用の着磁部を形成し
    、 更に、該ロータマグネツトに、上記位相検出用
    着磁部に対して点対称の位置に、三ケ月状の無着
    磁部を設けたことを特徴とする、回転位相検出器
    付き速度検出装置。
JP1990011437U 1990-02-07 1990-02-07 回転位相検出器付き速度検出装置 Expired - Fee Related JPH0733163Y2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1990011437U JPH0733163Y2 (ja) 1990-02-07 1990-02-07 回転位相検出器付き速度検出装置
EP91300979A EP0441615B1 (en) 1990-02-07 1991-02-06 Speed detection apparatus having a rotation phase detector
DE69108952T DE69108952T2 (de) 1990-02-07 1991-02-06 Geschwindigkeitsmesseinrichtung mit einem Rotationsphasendetektor.
US07/651,985 US5130649A (en) 1990-02-07 1991-02-07 Speed detection apparatus having magnetic rotor with two magnetized portions and a crescent shaped non-magnetized portion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990011437U JPH0733163Y2 (ja) 1990-02-07 1990-02-07 回転位相検出器付き速度検出装置

Publications (2)

Publication Number Publication Date
JPH03104858U true JPH03104858U (ja) 1991-10-30
JPH0733163Y2 JPH0733163Y2 (ja) 1995-07-31

Family

ID=11778071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990011437U Expired - Fee Related JPH0733163Y2 (ja) 1990-02-07 1990-02-07 回転位相検出器付き速度検出装置

Country Status (4)

Country Link
US (1) US5130649A (ja)
EP (1) EP0441615B1 (ja)
JP (1) JPH0733163Y2 (ja)
DE (1) DE69108952T2 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265480A (en) * 1990-08-23 1993-11-30 Mazda Motor Corporation Torque detector
CA2175946A1 (en) * 1995-06-06 1996-12-07 Brian G. Babin Apparatus for sensing the speed of a rotating element
US6253460B1 (en) * 1999-06-10 2001-07-03 Geoffrey W. Schmitz Apparatus for position measurement and a system and a method for using the same
US6566863B2 (en) * 2000-09-28 2003-05-20 Kabushiki Kaisha Toshiba Angle detector
ITTO20030024A1 (it) * 2003-01-20 2004-07-21 Rft Spa Dispositivo di comando a ruota fonica

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115852A (en) * 1975-04-04 1976-10-12 Nissan Motor Co Ltd Detector of the revolving angle and revolution of a revolving body
US4410853A (en) * 1980-12-13 1983-10-18 Hitachi, Ltd. Frequency detector
JPS60140158A (ja) * 1983-12-28 1985-07-25 Sony Corp 回転検出装置
KR960008840U (ko) * 1994-08-27 1996-03-16 홀센서를 이용한 냉장고의 문열림 감지회로
CN1138419A (zh) * 1996-01-23 1996-12-25 李冠祥 黑茶

Also Published As

Publication number Publication date
US5130649A (en) 1992-07-14
EP0441615A2 (en) 1991-08-14
JPH0733163Y2 (ja) 1995-07-31
EP0441615A3 (en) 1992-01-02
DE69108952T2 (de) 1995-08-24
DE69108952D1 (de) 1995-05-24
EP0441615B1 (en) 1995-04-19

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees