JPH0161603U - - Google Patents
Info
- Publication number
- JPH0161603U JPH0161603U JP11692288U JP11692288U JPH0161603U JP H0161603 U JPH0161603 U JP H0161603U JP 11692288 U JP11692288 U JP 11692288U JP 11692288 U JP11692288 U JP 11692288U JP H0161603 U JPH0161603 U JP H0161603U
- Authority
- JP
- Japan
- Prior art keywords
- piston rod
- magnetic field
- position detector
- detector
- magnetization 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.)
- Pending
Links
- 230000005415 magnetization Effects 0.000 claims description 7
- 230000004907 flux Effects 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Actuator (AREA)
Description
第１図は、高い分解能を有する考案による位置
検出器を組込んだ作動シリンダの縦断面図である
。第２図は、シリンダ蓋に組込まれたシリンダの
一部を切欠した斜視図である。第３図は、第１図
または第２図のピストン棒位置検出器の磁場検出
器に接続しうる電気的読取り回路である。第４図
〜第６図は、それぞれ、第１図に示したのとは別
形状の磁化パターンを付したピストン棒の概略図
である。第７図及び第８図は、ＳＮ比改善と空隙
不規則性除去のために接続された複数個の個別磁
場検出器を有する磁場検出器の概略図である。第
９図は、ピストン棒の磁化パターンと連動し、そ
の出力信号を、回転指針の追従に直接利用するよ
うになつている磁場検出器の概略図である。
１０，１０′……作動シリンダ、１２，１２′
……シリンダブロツク、１４……ピストン、１６
，１８……作動空間、２０，２０′，２２，２２
′……接続孔、２４，２４′……シリンダ蓋、２
６……中央孔、２８，２８′，２８″，２８′″
……ピストン棒、３０，３０′，３０″，３０′
″……磁化パターン、３２，３３，３４……検出
器（ホール発生器）、３６，３８……４線ケーブ
ル、４０……検出器（ホール発生器）、４２……
棒状軟鉄体、４４……差動増幅器、４６，４８…
…検出器ユニツト、５０，５２，５４，５６……
抵抗、５８……差動増幅器、６０……帰還抵抗、
６２……抵抗、６４……比較器、６６……電位差
計、６８……加減計数器、７０，７２……デイジ
タル式特性曲線回路、７４，７６……ＤＡ交換器
、７８，８０……増幅器、８２，８４……デイジ
タル表示部、８６……加減計算器、８８……二極
双投スイツチ、９０，９１，９２，９３，９４，
９８……検出器（ホール発生器）、９６……加算
増幅器、１００，１０４，１０６，１０８……検
出器（ホール発生器）、１１０，１１２，１１４
……増幅器、１１６，１１８，１２０……コイル
、１２２……磁針、ＵＨ……ホール電圧、Ｉ……
供給電流、Ｋ……検出器定数、Ｘ……ピストン棒
の偏向、Ｘ０……Ｘ方向での磁化パターン区間、
Ｚ０……計数器レベル。
FIG. 1 is a longitudinal sectional view of a working cylinder incorporating an inventive position sensor with high resolution. FIG. 2 is a partially cutaway perspective view of the cylinder assembled into the cylinder lid. FIG. 3 is an electrical readout circuit that may be connected to the magnetic field detector of the piston rod position detector of FIG. 1 or 2. FIG. 4 to 6 are schematic illustrations of a piston rod with a magnetization pattern of a different shape than that shown in FIG. 1, respectively. 7 and 8 are schematic diagrams of a magnetic field detector having a plurality of individual magnetic field detectors connected for signal-to-noise ratio improvement and air gap irregularity removal. FIG. 9 is a schematic diagram of a magnetic field detector which is adapted to work in conjunction with the magnetization pattern of the piston rod and whose output signal is used directly to track the rotating pointer. 10, 10'... Working cylinder, 12, 12'
...Cylinder block, 14...Piston, 16
, 18... Working space, 20, 20', 22, 22
'... Connection hole, 24, 24'... Cylinder lid, 2
6...Central hole, 28, 28', 28'', 28'''
...Piston rod, 30, 30', 30'', 30'
″... Magnetization pattern, 32, 33, 34... Detector (Hall generator), 36, 38... 4-wire cable, 40... Detector (Hall generator), 42...
Rod-shaped soft iron body, 44... Differential amplifier, 46, 48...
...detector unit, 50, 52, 54, 56...
Resistor, 58... Differential amplifier, 60... Feedback resistor,
62... Resistor, 64... Comparator, 66... Potentiometer, 68... Addition/subtraction counter, 70, 72... Digital characteristic curve circuit, 74, 76... DA exchanger, 78, 80... Amplifier , 82, 84... Digital display section, 86... Addition/subtraction calculator, 88... Double pole double throw switch, 90, 91, 92, 93, 94,
98...Detector (Hall generator), 96...Summing amplifier, 100, 104, 106, 108...Detector (Hall generator), 110, 112, 114
...Amplifier, 116,118,120...Coil, 122...Magnetic needle, UH...Hall voltage, I...
Supply current, K...Detector constant, X...Deflection of the piston rod, X0 ...Magnetization pattern section in the X direction,
Z 0 ...Counter level.
Claims (1)
、磁場に感応する固定検出器配置とを備える作動
シリンダ用位置検出器において、 ピストン棒２８の表面に、ピストン棒の長手方
向について変化する磁化パターン３０を設け、該
パターンは、ピストン棒の表面の周囲で、漂遊磁
束を発生するようになつており、かつ該磁束の到
達範囲内に、検出器３２，３４，４０，９０〜９
４，９８，１００，１０４，〜１０８を配設して
あることを特徴とする位置検出器。 (2) 磁化パターン３０が、ピストン棒長手方向
について、周期的に変化していることを特徴とす
る実用新案登録請求の範囲第(1)項に記載の位置
検出器。 (3) 検出器は、周囲方向または軸方向で相互に
ずらして配設された複数個の磁場検出器を有し、
該検出器の出力信号は、読取り回路によつて、ピ
ストン棒２８の位置を再生する位置信号と合成さ
れるようになつていることを特徴とする実用新案
登録請求の範囲第(1)項または第(2)項に記載の位
置検出器。 (4) 各３つの磁場検出器を、周囲方向または軸
方向において、それぞれ磁化パターン有効分割の
１／３だけ相互にずらして配設し、前記各磁場検
出器の出力信号を１２０°の角度で配設したコイ
ルで制御するようにしたことを特徴とする実用新
案登録請求の範囲第(3)項に記載の位置検出器。 (5) １２０°の角度のコイル配置が励磁する磁
場内に、磁気指針を回転可能に配設したことを特
徴とする実用新案登録請求の範囲第(4)項に記載
の位置検出器。[Claims for Utility Model Registration] (1) In a position detector for an operating cylinder comprising a permanent magnet that moves in synchronization with the piston rod and a fixed detector arrangement sensitive to a magnetic field, the surface of the piston rod 28 is provided with a piston A magnetization pattern 30 varying along the length of the rod is provided, which pattern is adapted to generate a stray magnetic flux around the surface of the piston rod, and within the reach of the magnetic flux, detectors 32, 34 are provided. ,40,90~9
4, 98, 100, 104, to 108 are arranged. (2) The position detector according to claim 1, wherein the magnetization pattern 30 changes periodically in the longitudinal direction of the piston rod. (3) The detector has a plurality of magnetic field detectors arranged circumferentially or axially offset from each other,
The output signal of the detector is adapted to be combined with a position signal for reproducing the position of the piston rod 28 by means of a reading circuit. The position detector described in paragraph (2). (4) Each of the three magnetic field detectors is arranged so as to be shifted from each other by 1/3 of the effective division of the magnetization pattern in the circumferential direction or the axial direction, and the output signal of each of the magnetic field detectors is arranged at an angle of 120°. The position detector according to claim (3) of the utility model registration, characterized in that the position detector is controlled by a coil provided therein. (5) The position detector according to claim (4) of the utility model registration, characterized in that a magnetic pointer is rotatably disposed within a magnetic field excited by a coil arrangement arranged at an angle of 120°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11692288U JPH0161603U (en) | 1988-09-07 | 1988-09-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11692288U JPH0161603U (en) | 1988-09-07 | 1988-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0161603U true JPH0161603U (en) | 1989-04-19 |
Family
ID=31359904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11692288U Pending JPH0161603U (en) | 1988-09-07 | 1988-09-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0161603U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542067A (en) * | 1978-09-19 | 1980-03-25 | Mitsubishi Electric Corp | Rotational frequency detector |
-
1988
- 1988-09-07 JP JP11692288U patent/JPH0161603U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542067A (en) * | 1978-09-19 | 1980-03-25 | Mitsubishi Electric Corp | Rotational frequency detector |
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