JPH0355513U - - Google Patents
Info
- Publication number
- JPH0355513U JPH0355513U JP11693789U JP11693789U JPH0355513U JP H0355513 U JPH0355513 U JP H0355513U JP 11693789 U JP11693789 U JP 11693789U JP 11693789 U JP11693789 U JP 11693789U JP H0355513 U JPH0355513 U JP H0355513U
- Authority
- JP
- Japan
- Prior art keywords
- detection
- magnetized body
- signal
- magnetoresistive element
- signal magnetized
- 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
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は本考案にかかるエンコーダの一実施例
を示す側面図、第２図は同上実施例に用いること
ができる速度や位置検出のための回路例を示す回
路図、第３図は同上回路の検出動作を説明するた
めの波形図、第４図は上記実施例に用いることが
できる原点検出のための回路例を示す回路図、第
５図は同上回路の検出動作を説明するための波形
図、第６図は上記実施例中の着磁体の磁界と磁気
抵抗ストライプとの関係及びギヤツプ長と磁気抵
抗素子出力との関係を示す線図、第７図は上記実
施例による第２の磁気抵抗素子出力の変動の様子
を示す波形図、第８図は上記実施例において第１
の磁気抵抗素子が長いギヤツプ寸法をおいて配置
されているとした場合にその出力の変動の様子を
示す波形図、第９図は本考案にかかるエンコーダ
の別の実施例を示す側面図、第１０図は従来のエ
ンコーダの一例を示す側面図、第１１図は同上従
来例における原点信号の例を示す波形図、第１２
図は従来のエンコーダの別の例を示す側面図、第
１３図は同上従来例における原点信号の例を示す
波形図、第１４図は同じくギヤツプ寸法が大きい
場合の原点信号の例を示す波形図、第１５図はギ
ヤツプ寸法がさらに大きい場合の原点信号の例を
示す波形図である。
２，２２……第１の信号着磁体、３，２３……
第２の信号着磁体、７……第１の磁気抵抗素子、
８……第２の磁気抵抗素子、ｇ１，ｇ２……ギヤ
ツプ寸法。
Fig. 1 is a side view showing an embodiment of the encoder according to the present invention, Fig. 2 is a circuit diagram showing an example of a circuit for detecting speed and position that can be used in the above embodiment, and Fig. 3 is the same circuit as above. 4 is a circuit diagram showing an example of a circuit for detecting the origin that can be used in the above embodiment, and FIG. 5 is a waveform diagram for explaining the detection operation of the same circuit. 6 is a diagram showing the relationship between the magnetic field of the magnetized body and the magnetoresistive stripe and the relationship between the gap length and the magnetoresistive element output in the above embodiment, and FIG. 7 is a diagram showing the relationship between the magnetic field of the magnetized body and the magnetoresistive stripe in the above embodiment, and FIG. 8 is a waveform diagram showing how the resistance element output changes.
FIG. 9 is a waveform diagram showing how the output changes when magnetoresistive elements are arranged with a long gap dimension; FIG. 9 is a side view showing another embodiment of the encoder according to the present invention; FIG. FIG. 10 is a side view showing an example of a conventional encoder, FIG. 11 is a waveform diagram showing an example of the origin signal in the conventional example, and FIG.
The figure is a side view showing another example of the conventional encoder, Fig. 13 is a waveform diagram showing an example of the origin signal in the conventional example as above, and Fig. 14 is a waveform diagram showing an example of the origin signal when the gap size is large. , FIG. 15 is a waveform diagram showing an example of the origin signal when the gap size is even larger. 2, 22...first signal magnetized body, 3, 23...
second signal magnetized body, 7...first magnetoresistive element,
8...Second magnetoresistive element, g1 , g2 ...Gap dimensions.
Claims (1)
ーダであつて、 第１の検出部は、相対向しかつ相対移動する原
点検出用の第１の信号着磁体と第１の検出用磁気
抵抗素子とでなり、 第２の検出部は、相対向しかつ相対移動する第
２の信号着磁体と第２の検出用磁気抵抗素子とで
なり、 第２の信号着磁体は、Ｎ極とＳ極が一定間隔で
交互に形成されて速度や位置等の検出用になつて
おり、 第１の信号着磁体と第２の信号着磁体は上記相
対移動方向に対して直角方向に並べて配置され、 第１の信号着磁体と第１の検出用磁気抵抗素子
との平均ギヤツプ寸法は、第２の信号着磁体と第
２の検出用磁気抵抗素子との平均ギヤツプ寸法よ
りも短いことを特徴とするエンコーダ。[Claims for Utility Model Registration] An encoder having a first detection section and a second detection section, wherein the first detection section has a first signal input for detecting an origin that faces each other and moves relatively. The second detection part is composed of a magnetic body and a first detection magnetoresistive element, and the second detection part is composed of a second signal magnetized body and a second detection magnetoresistive element that face each other and move relative to each other. The signal magnetized body has N poles and S poles alternately formed at regular intervals, and is used for detecting speed, position, etc., and the first signal magnetized body and the second signal magnetized body move in the above-mentioned relative movement direction. The average gap size of the first signal magnetized body and the first detection magnetoresistive element is the average gap size of the second signal magnetized body and the second detection magnetoresistive element. An encoder characterized by being shorter than its dimensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11693789U JPH0355513U (en) | 1989-10-04 | 1989-10-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11693789U JPH0355513U (en) | 1989-10-04 | 1989-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0355513U true JPH0355513U (en) | 1991-05-29 |
Family
ID=31665191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11693789U Pending JPH0355513U (en) | 1989-10-04 | 1989-10-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0355513U (en) |
-
1989
- 1989-10-04 JP JP11693789U patent/JPH0355513U/ja active Pending
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