JPS5923609U - Cylinder position detection device - Google Patents
Cylinder position detection deviceInfo
- Publication number
- JPS5923609U JPS5923609U JP11782682U JP11782682U JPS5923609U JP S5923609 U JPS5923609 U JP S5923609U JP 11782682 U JP11782682 U JP 11782682U JP 11782682 U JP11782682 U JP 11782682U JP S5923609 U JPS5923609 U JP S5923609U
- Authority
- JP
- Japan
- Prior art keywords
- rod
- detection device
- magnetic
- phase
- predetermined
- 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
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Actuator (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案に係るシリンダ位置検出装置の一実施
例を示す軸方向断面図、第２図は第１図の実施例におけ
るコイルの結線形式の一例を示す回路図、第３図は第１
−のコイルアセンブリにおける２次コイル出力信号と基
準交流信号との位相ずれをディジタル量で測定するため
の回路の一例を示すブロック図、第４図及び第５図はこ
の考案の他の実施例を夫々示す軸方向断面図、である。FIG. 1 is an axial sectional view showing an embodiment of the cylinder position detection device according to the invention, FIG. 2 is a circuit diagram showing an example of the coil connection type in the embodiment of FIG. 1, and FIG. 1
- A block diagram showing an example of a circuit for measuring the phase shift between the secondary coil output signal and the reference AC signal in the coil assembly as a digital quantity; FIGS. 4 and 5 show other embodiments of this invention. FIG.
Claims (1)
コイルと、この１次コイルに対応して設けられた２次コ
イルとを含むコイルアセンブリを、コイル空間がシリン
ダのロッドとほぼ同心になるような配置で該ロッドを該
コイル空間にスライド自在に貫通させた状態で、該シリ
ンダの所定箇所に固定し、他方、前記ロッドの周囲に軸
方向に所定間隔て複数の磁性リングを設け、前記１次コ
イルの各々を位相のすれた複数の基準交流信号によって
個別に励磁し、これにより前記基準交流信号を前記ロッ
ドの直線位置に応じて位相シフトした信号が前記２次コ
イルの側に得られるようにしたことを特徴とするシリン
ダ位置検出装置。 ２ 前記ロッドは、該ロッドの心棒とは別体の所定幅の
環状の磁性リングと所定幅の環状の非磁性スペーサとを
軸方向に交互に該心棒の周囲に嵌着させて成るものであ
る実用新案登録請求の範囲第１項記載のシリンダ位置検
出装置。 ３ 前記ロッドは、磁性体から成る心棒から成り、この
心棒の外周部に所定幅の環状突出部を前記磁性リングと
して軸方向に所定間隔て形成して成るものである実用新
案登録請求の範囲第１項記載のシリンダ位置検出装置。 ４ 前記ロッドの周囲には非磁性体から成るスリーブが
嵌着されている実用新案登録請求の範囲第１項または第
２項または第３項記載のシリンダ位置検出装置。 ５ 前記ロッドの各磁性リングは、前記１次及び２次コ
イルを通る磁路のリラクタンスを該磁性リングの直線位
置に応じて変位させるよう所定の軸方向幅をもち、かつ
、前記各１次コイルに対応するリラクタンスの変化の位
相が互いに所定位相だけずれるような配置で前記各１次
コイルが配設されている実用新案登録請求の範囲第４項
記載のシリンダ位置検出装置。 ６ 前記１次及び２次コイルは４相のコイルグループか
ら成り、前記磁性リングの直線位置に応じた各相のリラ
クタンス変化の位相が９０度づつずれるように配置され
ており、その中で前記リラクタンス変化が１８０度隔っ
た２つの相を前′記基準交流信号として正弦波信号を用
いて互いに逆相で動作し、−前記リラクタンス変化が１
８０度隔った別の２つの相を前記基準交流信号として余
弦波信号を用いて互いに逆相で動作するようにした実用
新案登録請求の範囲第５項記載のシリンダ位置検出装置
。[Claims for Utility Model Registration] 1. A coil assembly including a plurality of primary coils arranged in a predetermined arrangement offset in the axial direction and a secondary coil provided corresponding to the primary coils, The rod is arranged so that the coil space is almost concentric with the rod of the cylinder, and the rod is slidably passed through the coil space, and is fixed at a predetermined location of the cylinder, and on the other hand, the rod is placed around the rod in the axial direction. A plurality of magnetic rings are provided at predetermined intervals, and each of the primary coils is individually excited by a plurality of phase-shifted reference AC signals, thereby shifting the phase of the reference AC signal according to the linear position of the rod. A cylinder position detection device characterized in that a signal is obtained on the side of the secondary coil. 2. The rod is formed by alternately fitting annular magnetic rings of a predetermined width and annular non-magnetic spacers of a predetermined width around the mandrel in the axial direction, which are separate from the mandrel of the rod. A cylinder position detection device according to claim 1 of the utility model registration claim. 3. The rod is composed of a mandrel made of a magnetic material, and annular protrusions of a predetermined width are formed on the outer periphery of the mandrel as the magnetic rings at predetermined intervals in the axial direction. The cylinder position detection device according to item 1. 4. The cylinder position detection device according to claim 1, 2, or 3, wherein a sleeve made of a non-magnetic material is fitted around the rod. 5. Each magnetic ring of the rod has a predetermined axial width so as to displace the reluctance of a magnetic path passing through the primary and secondary coils according to the linear position of the magnetic ring, and 5. The cylinder position detection device according to claim 4, wherein the primary coils are arranged in such a manner that the phases of changes in reluctance corresponding to the change in reluctance are shifted from each other by a predetermined phase. 6. The primary and secondary coils consist of a four-phase coil group, and are arranged so that the phase of the reluctance change of each phase is shifted by 90 degrees according to the linear position of the magnetic ring, and among them, the reluctance change is shifted by 90 degrees. Two phases whose changes are separated by 180 degrees are operated in opposite phases to each other using a sine wave signal as the reference AC signal, and - the reluctance change is 180 degrees apart.
The cylinder position detecting device according to claim 5, which is registered as a utility model and operates in mutually opposite phases by using cosine wave signals as the reference AC signals with two other phases separated by 80 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11782682U JPS5923609U (en) | 1982-08-04 | 1982-08-04 | Cylinder position detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11782682U JPS5923609U (en) | 1982-08-04 | 1982-08-04 | Cylinder position detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5923609U true JPS5923609U (en) | 1984-02-14 |
| JPH0226002Y2 JPH0226002Y2 (en) | 1990-07-17 |
Family
ID=30271074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11782682U Granted JPS5923609U (en) | 1982-08-04 | 1982-08-04 | Cylinder position detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5923609U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61137001A (en) * | 1984-12-07 | 1986-06-24 | S G:Kk | Apparatus for detecting position of piston rod of hydraulic cylinder |
| JPS6235202A (en) * | 1985-08-09 | 1987-02-16 | S G:Kk | Absolute position detecting device |
| JP2007093397A (en) * | 2005-09-29 | 2007-04-12 | Murata Mach Ltd | Method of manufacturing magnetic scale for electromagnetic induction type displacement detector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897561A (en) * | 1972-03-27 | 1973-12-12 | ||
| JPS5013754A (en) * | 1973-06-11 | 1975-02-13 |
-
1982
- 1982-08-04 JP JP11782682U patent/JPS5923609U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897561A (en) * | 1972-03-27 | 1973-12-12 | ||
| JPS5013754A (en) * | 1973-06-11 | 1975-02-13 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61137001A (en) * | 1984-12-07 | 1986-06-24 | S G:Kk | Apparatus for detecting position of piston rod of hydraulic cylinder |
| JPS6235202A (en) * | 1985-08-09 | 1987-02-16 | S G:Kk | Absolute position detecting device |
| JP2007093397A (en) * | 2005-09-29 | 2007-04-12 | Murata Mach Ltd | Method of manufacturing magnetic scale for electromagnetic induction type displacement detector |
| JP4671033B2 (en) * | 2005-09-29 | 2011-04-13 | 村田機械株式会社 | Manufacturing method of magnetic scale for electromagnetic induction type displacement detector. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0226002Y2 (en) | 1990-07-17 |
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