JPS6079220A - Signal recording apparatus for encoder - Google Patents

Signal recording apparatus for encoder

Info

Publication number
JPS6079220A
JPS6079220A JP58186826A JP18682683A JPS6079220A JP S6079220 A JPS6079220 A JP S6079220A JP 58186826 A JP58186826 A JP 58186826A JP 18682683 A JP18682683 A JP 18682683A JP S6079220 A JPS6079220 A JP S6079220A
Authority
JP
Japan
Prior art keywords
signal
recording
head
encoder
magnetic drum
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
JP58186826A
Other languages
Japanese (ja)
Other versions
JPH0374768B2 (en
Inventor
Hiroyuki Yoshida
宏之 吉田
Kunio Omura
国雄 大村
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.)
Nidec Precision Corp
Original Assignee
Nidec Copal Corp
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 Nidec Copal Corp filed Critical Nidec Copal Corp
Priority to JP58186826A priority Critical patent/JPS6079220A/en
Publication of JPS6079220A publication Critical patent/JPS6079220A/en
Publication of JPH0374768B2 publication Critical patent/JPH0374768B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G01D18/001Calibrating encoders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To enable a high-accuracy position signal, by regenerating the once recorded position detecting signal and rerecording the recording signal corrected according to the regenerated signal. CONSTITUTION:The reference analog signal (er) formed from a pattern generator 14 is supplied to a write-head 7 through a recording amplifier 16 by placing a switch 15 in (a) position. A magnetic drum 2 rotates to regenerate the position detecting signal from a read-head 3 by rotation by an angle of beta. The magnetic drum 2 gives to the regenerated signal (eo) which correspond to the time duration required by the rotation from a position of the read-head 3 to the write- head, i.e. through an angle of alpha and thus, a lag regenerating signal eo (d) is outputted. A computing unit 22 creates the corrected signal er (c) and after one rotation of the magnetic drum 2, a switch 15 is placed in the (b) position and the signal is supplied to the write-head 7 through the recording amplifier 16.

Description

【発明の詳細な説明】 (発明の分野) 本発明は、エンコーダ用信号記録装置に関し、特に磁気
ドラムと(非接触)゛−再生ヘッドとを有する゛磁気エ
ンコーダ等において再生信号が一定振幅となるように記
録信号を制御するようにした信号記録装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a signal recording device for an encoder, and particularly to a magnetic encoder having a magnetic drum and a (non-contact) reproduction head, in which a reproduced signal has a constant amplitude. The present invention relates to a signal recording device that controls recording signals in this manner.

(発明の背景) 従来、例えば磁気ドラムと再生ヘッドを有する磁気エン
コーダに位置検出信号を記録する装置において、記録ヘ
ッドに人力される信号は、一定振幅かつ一定波形のもの
であった。
(Background of the Invention) Conventionally, in a device for recording a position detection signal on a magnetic encoder having a magnetic drum and a reproducing head, for example, the signal manually applied to the recording head has a constant amplitude and a constant waveform.

このため、従来形の信号記録装置においては、磁気ドラ
ムの偏芯および磁気ドラム表面の形状等の影響により、
該磁気ドラム上の記録媒体ど再生ヘッドの間のギャップ
、特に相対ギャップの変動により、再生出力信号の振幅
が一定とならず、かつ再生信号波形が所定の近似正弦波
とならず記録媒体の位置によって波形が異なっていた。
For this reason, in conventional signal recording devices, due to the eccentricity of the magnetic drum and the shape of the magnetic drum surface,
Due to fluctuations in the gap between the recording medium and the reproducing head on the magnetic drum, especially in the relative gap, the amplitude of the reproduced output signal is not constant, and the reproduced signal waveform does not become a predetermined approximate sine wave. The waveforms were different depending on the

このため、このような再生信号から位置信号を生成した
場合、位置精度が高くできないという不都合があった。
For this reason, when a position signal is generated from such a reproduced signal, there is a problem that the position accuracy cannot be increased.

また、このような再生信号を例えばA G C回路等に
よって波形整形した場合においてもしきい値レベル付近
での再生信号の傾きが一定でないため高精度の位置隼号
を得ることが不可能であった。
Furthermore, even when such a reproduced signal is waveform-shaped using, for example, an AGC circuit, it is impossible to obtain a highly accurate position signal because the slope of the reproduced signal is not constant near the threshold level. .

(発明の目的) 本発明の目的は、前述の従来形にお番プる問題点に鑑み
、エンコーダ用゛信号記録装置において、一旦記録した
位置検出信号を再生し、再生した信号に基づき補正され
た記録信号を再記録するという構想に基づき、記録媒体
と再生ヘッドとの間のギャップ等の影響を受けることな
く一定振幅かつ一定波形の再生信号が得られるようにし
、高精度の位置信号を得ることができるようにすること
にある。
(Object of the Invention) In view of the above-mentioned problems with the conventional type, an object of the present invention is to reproduce a position detection signal once recorded in a signal recording device for an encoder, and perform correction based on the reproduced signal. Based on the concept of re-recording the previously recorded signal, the system enables a reproduced signal with a constant amplitude and constant waveform to be obtained without being affected by the gap between the recording medium and the reproducing head, thereby obtaining a highly accurate position signal. The goal is to make it possible.

(発明の構成) 本発明は、記録媒体とリードヘッドをI”lるエンコー
ダにおける該記録媒体上に位置検出信号を記録するエン
コーダ用信号記録装置であって、該装置は該記録媒体に
当初記録した位置検出信号を再生し再生信号の全部また
は一部を順次記憶づる記憶手段、該記憶手段から読み出
した信号に腿づき該記録媒体の各位置の再生信号の瞬時
レベルが所定値となるように記録信号の各瞬時レベルを
調節するレベル制御手段、および該レベル制御手段によ
ってレベル調節された記録信号を該記録媒体の対応位置
に再記録Jる記録手段を具備することを特徴とする。
(Structure of the Invention) The present invention is a signal recording device for an encoder that records a position detection signal on a recording medium in an encoder that connects a recording medium and a read head, the device initially recording a position detection signal on the recording medium. storage means for reproducing the detected position detection signal and sequentially storing all or part of the reproduced signal; and a storage means for sequentially storing all or part of the reproduced signal; The present invention is characterized by comprising a level control means for adjusting each instantaneous level of the recording signal, and a recording means for re-recording the recording signal whose level has been adjusted by the level control means at a corresponding position on the recording medium.

(発明の実施例) 以下、図面により本発明の実施例を説明りる。(Example of the invention) Embodiments of the present invention will be described below with reference to the drawings.

第1図は、本発明の一実施例に係わるエンコーダ用信号
記録装冒の構成を示慢。同図におい(,1は磁気エンコ
ーダを示しnいに構造的に一体化された磁気ドラム2と
リードヘッド3を具備する。
FIG. 1 shows the configuration of a signal recording device for an encoder according to an embodiment of the present invention. In the figure, 1 indicates a magnetic encoder, which is equipped with a magnetic drum 2 and a read head 3 which are structurally integrated.

磁気ドラム2は、基準エンコーダ4と同軸上にカップリ
ングされ、その磁気記録媒体面5には消去ヘッド6おJ
:びライ1−ヘッド7によって位置検出信号の書き込み
が行なわれる。なお、磁気ドラム2は、第2図に承りよ
うに、カップリング8によって基準エンコーダ4と結合
され、七−夕9′8によってプーリー10..11およ
びベル1〜12を介しC回転駆動される。
The magnetic drum 2 is coaxially coupled to a reference encoder 4, and has an erasing head 6 and an erase head 6 on its magnetic recording medium surface 5.
:The writing of the position detection signal is performed by the printer 1-head 7. As shown in FIG. 2, the magnetic drum 2 is connected to the reference encoder 4 by a coupling 8, and is connected to a pulley 10. by a Tanabata 9'8. .. 11 and bells 1 to 12.

第1図のエンコーダ用信号記録装置におい(、磁気ドラ
ム2の磁気記録媒体面5に位置検出信号を書き込む場合
には、モータ9′(第2図)によってM準エンコーダ4
および磁気ドラム2を・回転させる。基準エンコーダ4
は、磁気ドラム2に記録しようとすノる1回転当りの繰
り返し波形の数りなわちパルス数に対し゛(充分大きな
分解能を有する信号を発生する。例えば基準エンコーダ
4とし゛ではフォトエンコーダあるいはマグネスケール
等が用いられ、1回転線つき20万パルスの矩形波信号
を発生するものと!−る。
In the encoder signal recording device shown in FIG.
and rotate the magnetic drum 2. Reference encoder 4
generates a signal with a sufficiently large resolution for the number of repetitive waveforms per rotation, that is, the number of pulses, to be recorded on the magnetic drum 2.For example, the reference encoder 4 and etc. are used to generate a rectangular wave signal of 200,000 pulses per rotation line.

まず、エンコーダ用信号記録の前]二程としてリード及
びライトヘッド間の角度β(= 360’ −α)を検
出し、遅延回路18の遅延時間を決定する。
First, in Step 2 before recording the encoder signal, the angle β (=360'-α) between the read and write heads is detected, and the delay time of the delay circuit 18 is determined.

スイッチ15をaポジションとし、パターンジェネレー
タ14より記録用増幅器16を介し゛(ライトヘッド7
に角度補正Y−力信弓を加える。磁気ドラム2は矢印へ
方向←回転し、角度補正マーカ信号の記録が開始されて
から角度βだけ回転する六リードヘッド3から角度補正
マーカ信号が再生される。その間の基準エンコーダ出力
パルス数を計数することにより角度βをめ、基準]−ン
コーダ4の1回転分のパルス数から角度βに対応す1:
る該パルス数を減算りることにより角度αに対応りるパ
ルス数すなわら角度αがめられる。これ:により、磁気
ドラム2が角度αだ1〕回転Jるのに二1□する時1゛
1“s it・00時間l■6間℃パリ20のデータ出
ぎ込みおJ:び読み出しがfコな、、われ、全工程を終
了する。 : 次に基準Yンコーダ4の矩形波信号を力□・クンタ□ コントロール回路13にJ:って分周し、この:分周さ
れ1c信号に塁づきパターンジェネレータ1411が基
準アナログ信号erを発生づる。パターンジ□、T−ネ
レータ14は、例えばROMおよび1〕Δ]ンバータを
有し、カウンタコントロール13からの分周□パルス(
7) 100/、< )I、=2Eつ。1j81゜、)
i工1し9,1グ信号e +’を発生りる。
The switch 15 is set to the a position, and the pattern generator 14 outputs data from the recording amplifier 16 (write head 7
Add angle correction Y-Rikishin bow to. The magnetic drum 2 rotates in the direction of the arrow, and the angle correction marker signal is reproduced from the read head 3, which rotates by an angle β after the recording of the angle correction marker signal is started. The angle β is determined by counting the number of reference encoder output pulses during that time, and the reference value is 1 corresponding to the angle β from the number of pulses for one rotation of the encoder 4:
By subtracting the number of pulses corresponding to the angle α, the number of pulses corresponding to the angle α, that is, the angle α can be determined. Due to this, when the magnetic drum 2 rotates at an angle α 1], when it rotates 21 □, the data of 1 ゛ 1 "sit 00 hours 1 ■ 6 hours ℃ Paris 20" can be input and read. I'm done with the whole process.: Next, the square wave signal from the reference Y encoder 4 is sent to the control circuit 13, divided by J:, and this: is divided into the 1c signal. The base pattern generator 1411 generates the reference analog signal er.
7) 100/, < )I, = 2E. 1j81゜,)
The i-engine 1 generates the 9,1-g signal e+'.

このようにしで、パターンジェネレータ□14がら生成
される基準アナログ信8づなわちg1録−8号e「は、
スイッチ154 aポジションとり、る袖とにより記録
用増幅器16を介してライトヘラニド17に供給される
。このようにしで、磁気ドラム2に1回転分の位置検出
信号の記録が行イすわれる。
In this way, the reference analog signal 8 generated from the pattern generator □14, that is, the
When the switch 154 is in the a position, the signal is supplied to the write amplifier 17 via the recording amplifier 16. In this manner, position detection signals for one rotation are recorded on the magnetic drum 2.

磁気ドラム2は、矢印へ方向に回転し、角度βだけ回転
りるとリードヘッド3から位置検出信号が再生される。
The magnetic drum 2 rotates in the direction of the arrow, and when rotated by an angle β, a position detection signal is reproduced from the read head 3.

リードヘッド3の出ツノ信号は再生用増幅器17を介し
て磁気エンコータの再生信号eOとしで出力され遅延回
路18に入力される。遅延回路18は、磁気ドラム2か
り一7ピペツト3の位置からライ1〜ヘツド7の位置ま
′c−slなわら角度αだけ回転づるに要づる時間分の
信号遅延を再生信号eOに与えるものであり、AD二1
ンパータ19、メモリ20およびD△コンバータ21を
具備づる。遅延回路18の遅延時間はカウンタ」アト]
−!−ル回路13からのコントロールパルスによってメ
七り20の書き込みおよび読み出しタイミングを規制J
ることにより制御され所定の遅延再生13号eo (d
)が出力される。再生信号eOしたかっCνY延再生信
号eo (d)は、磁気ドラム2の偏芯J5よびドラム
表面の形状にJ、り振幅a3よひ波形が不均一に変化し
ている。
The output signal from the read head 3 is output as a reproduction signal eO of the magnetic encoder via a reproduction amplifier 17 and inputted to a delay circuit 18. The delay circuit 18 gives the reproduced signal eO a signal delay corresponding to the time required for the magnetic drum to rotate by the straw angle α from the position of the magnetic drum 2 to the pipette 3 to the position of the lie 1 to head 7 by the straw angle α. And AD21
It is equipped with a converter 19, a memory 20, and a DΔ converter 21. The delay time of the delay circuit 18 is determined by the counter.
-! - Control pulses from the control circuit 13 regulate the write and read timing of the main circuit 20.
The predetermined delayed playback No. 13eo (d
) is output. The reproduced signal eO (d) has a waveform that varies non-uniformly due to the amplitude a3 due to the eccentricity J5 of the magnetic drum 2 and the shape of the drum surface.

演算部22はこのような遅延再生信号eO(d)から補
正された記録信号er(c)を生成す゛る。
The calculation unit 22 generates a corrected recording signal er(c) from such delayed reproduction signal eO(d).

りなわち演算部22は er (c)=eh /eo (d)xer−・・−■
4する0式で示す処理を行ない、補正記録信号Cr(C
)を出力づる。演帥部22の借成はいろいろ考えられる
が、1例としCi)す1]グ乗fNiM24.25と演
算増幅器23を用いた のを第3図に承り。
In other words, the calculation unit 22 is er (c)=eh /eo (d)xer-...-■
4, the process shown in equation 0 is performed, and the corrected recording signal Cr(C
) is output. There are many possible ways to borrow the operational section 22, but one example is shown in FIG.

第3図にJ3いC、アナログ乗算器24.25のスクー
ルファクターをそれぞれに+、に2、?Fi算増算器幅
器23幅度(ゲイン)をAとりると、各部の電圧m、n
、e、eh 、eo (d)、er 、er(C)およ
び電流1o、liの間の関係は、n −K 2 ・eo
(d)xm ・・・・・・・・・■n = e 十R+
 ・IO・・・・・・・・・・・・・・Cυ1i +1
o=0 ・・・・・・・・・・・・・・・■)e=−−
Ch−R2・I i ・−・−−−−・・−(r。
In Figure 3, the school factors of J3 and C, analog multiplier 24.25 are +, 2, and ?, respectively. When the width (gain) of the Fi multiplier amplifier 23 is taken as A, the voltages of each part m, n
, e, eh, eo (d), er, er (C) and the currents 1o, li are expressed as n −K 2 ·eo
(d) xm ・・・・・・・・・■n = e 1R+
・IO・・・・・・・・・・・・Cυ1i +1
o=0 ・・・・・・・・・・・・・・・■)e=−−
Ch-R2・I i ・−・−−−・・−(r.

m−−e−A ・・・・・・・・・・・・・・・(tf
)er ((:)=に+ −er xm −・・−・■
となる。
m--e-A ・・・・・・・・・・・・・・・(tf
)er ((:)=に+ −er xm −・・−・■
becomes.

従って、■、■、■、■、■式よりli、Jo。Therefore, from the formulas ■, ■, ■, ■, ■, li, Jo.

e、nをd!I去してmについで解くと次式のようにな
る。
e, n to d! If I is removed and m is solved, the following equation is obtained.

(R2/R+)K2・eO(d)−1((R2/R+)
+11(1/A)・・・・・・■ よってAが十分太き番ブれは m= 1 / R2・lで+ /1−(2・eh /e
o (d )・・・・・・■′ ■式に■′式を代入して整理りると er (C1)−に+ /に2 ・R+ /R2・f 
e11/eo (d ) ) ・el・・・・・・・■
これにJ:す (Kl/に2)・<R+ /R7) = 1どなるよう
にに+ 、に2 、R+ 、R2を選べば(例えばに+
 =に2かつ]で+=I’<2)er (c)=(el
+/eo (d)) ・erとなって第3図のブ[−j
ツク図で示した回路により、0式で示される人出ツノ特
性が得られることがわかる。なお、上述の式におい−U
、−ehはパターンジェネレータ14から出力される記
録用信号e +’を第1図の反転増幅器28によって増
幅した信号Cあり、この信号−ehの振幅は可変抵抗器
29ににつてリニアに調、整C゛きるにうになっている
。したがって、可変抵抗器29により補正記録信号er
(c)の信号レベルをリニアに調整C゛きることになる
(R2/R+)K2・eO(d)-1((R2/R+)
+11 (1/A)・・・・・・■ Therefore, the number deviation where A is sufficiently thick is m = 1 / R2・l and + /1−(2・eh /e
o (d)...■' Substituting the formula ■' into the formula ■ and sorting it out, er (C1)- + /2 ・R+ /R2・f
e11/eo (d)) ・el・・・・・・■
To this, J:S(Kl/Ni2)・<R+/R7) = 1 If you choose ni+, ni2, R+, R2 (for example, ni+
= 2 and] and +=I'<2)er (c)=(el
+/eo (d)) ・er becomes b[-j
It can be seen that the circuit shown in the diagram provides the turnout characteristic shown by equation 0. In addition, in the above formula -U
, -eh is a signal C obtained by amplifying the recording signal e+' outputted from the pattern generator 14 by the inverting amplifier 28 in FIG. The setting is set to C. Therefore, the variable resistor 29 causes the correction recording signal er
The signal level in (c) can be linearly adjusted C.

このようにして生成された補正記録イ;−号e l’(
C)は、磁気ドラム2が1回転した後スイツブ15がb
ポジションに切り換えられ(記録用増幅器1Gを介しC
ライ]へヘット7に供給される。これにより、磁気ドラ
ム2に1)゛l髄′検出(Fi月の再flき込みが行な
われる。但し、再書き込みの前に消去ヘット6によって
最初に書き込まれたi<を量検出信号が消去される。な
お、消去ヘット6には発振器30から消去用増幅器31
を介して+l’j去侶月が印加jkれる。
The correction record generated in this way;
C), after the magnetic drum 2 rotates once, the switch 15 moves to b.
position (C via recording amplifier 1G)
[Rye] is supplied to head 7. As a result, the magnetic drum 2 is re-written with 1) ``1'' detection (Fi month).However, before rewriting, the amount detection signal of i< which was first written by the erasing head 6 is erased. Note that the erase head 6 is connected from an oscillator 30 to an erase amplifier 31.
+l'j is applied via +l'j.

このようにしで、補正記録信号er (c)によつU磁
気ドラlx 2に1回転分のイ1>]べ検出信号が記録
される。
In this way, the correction recording signal er (c) records one rotation of the I1>]be detection signal on the U magnetic drive lx2.

なお、−上述においでは磁気ドラム等の回転形記録媒体
を用いjこ場合につき説明したが、本発明はこれに限ら
ずリニア方式の磁気工、ン]−,ダにも適用可能である
。また、本発明は磁気エンコーダに限らず、再書ぎ込み
が可能な記録媒体を用いる種々のエンコーダにも適用で
きることは明らかである。
Although the above description has been made using a rotating recording medium such as a magnetic drum, the present invention is not limited to this, and can also be applied to linear type magnetic machines. Furthermore, it is clear that the present invention is applicable not only to magnetic encoders but also to various encoders that use rewritable recording media.

(発明の効果) このように、本発明によれば、一旦磁気ドラム等に位置
検出信号を崗き込み、この信号を読み出して補正された
記録信号を作成し、この補正された記録信号によって再
書き込みを行なうが、補正された記録信号は当初の再生
信号の各瞬時レベル9逆数に比例りる瞬時レベルを有し
くいるから、再記録によって再生信号の各瞬時レベルが
所定値に補正され、再生信号の振幅および波形が均一化
される。したがっ(、該再生信号から得られる位置信号
は極めて高精度のものとなり、極めC高精度のコニンコ
ーダを作成することが可能になる。
(Effects of the Invention) As described above, according to the present invention, a position detection signal is once loaded into a magnetic drum, etc., this signal is read out to create a corrected recording signal, and the corrected recording signal is used to reproduce data. Although writing is performed, the corrected recorded signal has an instantaneous level that is proportional to the reciprocal of each instantaneous level of the original reproduced signal, so by re-recording, each instantaneous level of the reproduced signal is corrected to a predetermined value, and the reproduced signal is The signal amplitude and waveform are equalized. Therefore, the position signal obtained from the reproduced signal has extremely high precision, making it possible to create a Konin coder with extremely high precision.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例に係わるエンコーダ用信号記
録装置の構成を示すブロック回路図、第2図は第1図の
装置における一磁気ドラムと基準1ンコーダとの結合状
態を示す側面図、そして第3図は第1図の装置に遥■プ
る演算部の訂細ブ1,1ツク図である。 1・・・磁気エンコーダ、 2・・・磁気ドラム、3・
・・リードヘッド、 4・・・基準1ンニl−ダ、5・
・・磁気記録媒体面、 6・・・消去ヘッド、7・・・
ライトヘッド、8・・・hツブリング、9・・・モータ
、 io、 ii・・・プーリ、12・・・ベルト、 
13・・・カウンタコントロール回路、14・・・パタ
ーンジェネレータ、 15・・・スイッチ、16・・・
記録用増幅器、 17・・・′再生用増幅器、18・・
・遅延回路、 19・・・ADコンバータ、20・・・
メモリ、 21・・・6 A =1.ンバータ、22・
・・演算部、 23・・・演粋増幅器、24、25・・
・アナログ乗算器、 26.27・・・抵抗、28・・
・反転増幅器、 29・・・可変抵抗器、30・・・発
振器、 31・・・消、入用増幅器。
FIG. 1 is a block circuit diagram showing the configuration of a signal recording device for an encoder according to an embodiment of the present invention, and FIG. 2 is a side view showing a state in which one magnetic drum and one reference encoder are connected in the device of FIG. 1. , and FIG. 3 is a detailed block diagram of the arithmetic unit connected to the apparatus of FIG. 1. 1... Magnetic encoder, 2... Magnetic drum, 3...
・Read head, 4 ・Reference 1 nider, 5 ・
...Magnetic recording medium surface, 6...Erasing head, 7...
Light head, 8...h tube ring, 9...motor, io, ii...pulley, 12...belt,
13... Counter control circuit, 14... Pattern generator, 15... Switch, 16...
Recording amplifier, 17...' Reproducing amplifier, 18...
・Delay circuit, 19... AD converter, 20...
Memory, 21...6 A = 1. Mbaata, 22・
...Arithmetic unit, 23...Essential amplifier, 24, 25...
・Analog multiplier, 26.27...Resistance, 28...
・Inverting amplifier, 29... Variable resistor, 30... Oscillator, 31... Inverting amplifier.

Claims (1)

【特許請求の範囲】[Claims] 記録媒体とリードヘッドを有するエンコーダにおける該
記録媒体上に位置検出信号を記録するエンコーダ用信号
記録装置であって、該装置は該記録媒体に当初記録した
位置検出信号を再生し再生信号の全部または一部を順次
記憶する記憶手段、該記憶手段から読み出した信号に基
づき該記録媒体の各位置の再生信号の瞬時レベルが所定
値となるように記録信号の各瞬時レベルを調節するレベ
ル制御手段、および該レベル制御手段によってレベル調
節された記録信号を該記録媒体の対応位置に再記録する
記録手段を具備することを特徴とするエンコーダ用信号
記録装置。
A signal recording device for an encoder that records a position detection signal on the recording medium in an encoder having a recording medium and a read head, the device reproduces the position detection signal originally recorded on the recording medium, and reproduces all or all of the reproduced signal. storage means for sequentially storing a portion of the recorded signal; level control means for adjusting each instantaneous level of the recorded signal so that the instantaneous level of the reproduced signal at each position on the recording medium becomes a predetermined value based on the signal read from the storage means; and recording means for re-recording the recording signal whose level has been adjusted by the level control means at a corresponding position on the recording medium.
JP58186826A 1983-10-07 1983-10-07 Signal recording apparatus for encoder Granted JPS6079220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58186826A JPS6079220A (en) 1983-10-07 1983-10-07 Signal recording apparatus for encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58186826A JPS6079220A (en) 1983-10-07 1983-10-07 Signal recording apparatus for encoder

Publications (2)

Publication Number Publication Date
JPS6079220A true JPS6079220A (en) 1985-05-07
JPH0374768B2 JPH0374768B2 (en) 1991-11-28

Family

ID=16195284

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58186826A Granted JPS6079220A (en) 1983-10-07 1983-10-07 Signal recording apparatus for encoder

Country Status (1)

Country Link
JP (1) JPS6079220A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007060840A1 (en) * 2005-11-28 2007-05-31 Mitsubishi Electric Corporation Position detection error correcting method
JP2008536145A (en) * 2005-04-13 2008-09-04 エスアールアイ インターナショナル System and method for magnetically sensing the position of a moving component

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008536145A (en) * 2005-04-13 2008-09-04 エスアールアイ インターナショナル System and method for magnetically sensing the position of a moving component
WO2007060840A1 (en) * 2005-11-28 2007-05-31 Mitsubishi Electric Corporation Position detection error correcting method
JPWO2007060840A1 (en) * 2005-11-28 2009-05-07 三菱電機株式会社 Position detection error correction method
KR100955549B1 (en) 2005-11-28 2010-04-30 미쓰비시덴키 가부시키가이샤 Position detection error correcting method
JP4602411B2 (en) * 2005-11-28 2010-12-22 三菱電機株式会社 Position detection error correction method
US8091003B2 (en) 2005-11-28 2012-01-03 Mitsubishi Electric Corporation Position detection error correcting method

Also Published As

Publication number Publication date
JPH0374768B2 (en) 1991-11-28

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