JPS6311694B2 - - Google Patents
Info
- Publication number
- JPS6311694B2 JPS6311694B2 JP2023983A JP2023983A JPS6311694B2 JP S6311694 B2 JPS6311694 B2 JP S6311694B2 JP 2023983 A JP2023983 A JP 2023983A JP 2023983 A JP2023983 A JP 2023983A JP S6311694 B2 JPS6311694 B2 JP S6311694B2
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- current
- waveform
- output
- input
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Common Mechanisms (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、例えばＸ―Ｙプロツターのペンの上
下駆動装置に用いられているプランジヤの動作を
検出するプランジヤ動作検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a plunger motion detection device for detecting the motion of a plunger used in, for example, a pen vertical drive device of an XY plotter.
従来例の構成とその問題点
従来より、機械的出力を必要とする装置、例え
ば、Ｘ―Ｙプロツターのペンの上下駆動装置や、
活字プリンタの活字インパクト装置には、プラン
ジヤが用いられて来た。しかしながら、このプラ
ンジヤにおいては、プランジヤ巻線のインダクタ
ンスによる電流のおくれ等により、鉄心の応答に
タイムラグが生じるという問題がある。すなわち
プランジヤ内部のプランジヤ巻線は第１図に示す
ようにRL回路であるため、一般に知られている
ように定電圧を前記RL回路に印加した場合の時
間ｔと電流ｉとの関係は第２図のようになる。第
２図からわかるように、電流遅れが生じ、その結
果タイムラグが発生するのである。Conventional configurations and their problems Traditionally, devices that require mechanical output, such as the vertical drive device for the pen of an XY plotter,
Plungers have been used in type impact devices for type printers. However, this plunger has a problem in that a time lag occurs in the response of the iron core due to a delay in current due to the inductance of the plunger winding. In other words, since the plunger winding inside the plunger is an RL circuit as shown in Fig. 1, the relationship between time t and current i when a constant voltage is applied to the RL circuit is the second It will look like the figure. As can be seen from FIG. 2, a current delay occurs, resulting in a time lag.
この為マイクロコンピユータ等を用いる場合に
はプランジヤの動作待ち時間を設定せねばなら
ず、高速度の応答に対しては不合理な結果となつ
ていた。 For this reason, when a microcomputer or the like is used, it is necessary to set the plunger operation waiting time, which results in an unreasonable result for high-speed response.
発明の目的
本発明はプランジヤに流れる電流が可動鉄芯の
変位により変化する事に着目し、プランジヤに流
れる電流によりプランジヤ動作を検出し、待ち時
間を短縮して高速動作を可能にするプランジヤ動
作検出装置を提供する事を目的とする。Purpose of the Invention The present invention focuses on the fact that the current flowing through the plunger changes depending on the displacement of the movable iron core, and detects plunger operation based on the current flowing through the plunger, reducing waiting time and enabling high-speed operation. The purpose is to provide equipment.
発明の構成
本発明は制御信号によりプランジヤを動作させ
る駆動回路と、制御信号を波形変換する波形変換
器と、プランジヤに流れる電流を検出する電流検
出器と、電圧比較器を有し、前記電圧比較器の一
方の入力端子に電流検出器の出力を接続し、他方
の入力端子に変換器の出力を接続し、前記電圧比
較器によつてプランジヤに流れる電流のデイツプ
点を検出することにより、プランジヤの動作終了
時刻が検出でき、プランジヤの動作待ち時間を最
小にすることができるものである。Structure of the Invention The present invention includes a drive circuit that operates a plunger based on a control signal, a waveform converter that converts the control signal into a waveform, a current detector that detects a current flowing through the plunger, and a voltage comparator, and the voltage comparator. The output of the current detector is connected to one input terminal of the converter, the output of the converter is connected to the other input terminal, and the dip point of the current flowing through the plunger is detected by the voltage comparator. The operation end time of the plunger can be detected, and the waiting time for plunger operation can be minimized.
実施例の説明
第３図は本発明の一実施例の回路図、第４図は
その動作波形である。第４図において破線で囲ん
だ部分つまりトランジスタTrダイオードD1，D2
及び抵抗器R1，R2，R3より構成される部分は一
般的なプランジヤ駆動回路１である。プランジヤ
電流開閉用トランジスタTrのエミツタに電流検
出用抵抗R1が接続され、このエミツタからの出
力は電圧比較器CMPへ入力される。その波形は
第４図のＡ（実線）に示すようになる。電圧比較
器CMPの他方の入力Ｂは、制御信号入力（第４
図のＣ）が第４図の抵抗R4、コンデンサC2より
成る積分器及び比較電圧調整ボリウムR5を介し
て印加される。この入力波形は第４図のＢ（破線）
のようになる。DESCRIPTION OF EMBODIMENTS FIG. 3 is a circuit diagram of an embodiment of the present invention, and FIG. 4 shows its operating waveforms. The part surrounded by the broken line in Fig. 4, that is, the transistor Tr diode D 1 , D 2
The portion consisting of resistors R 1 , R 2 , and R 3 is a general plunger drive circuit 1. A current detection resistor R1 is connected to the emitter of the plunger current switching transistor Tr, and the output from this emitter is input to the voltage comparator CMP. The waveform becomes as shown in A (solid line) in FIG. The other input B of the voltage comparator CMP is a control signal input (fourth
C) in the figure is applied via an integrator consisting of a resistor R 4 and a capacitor C 2 and a comparison voltage adjustment volume R 5 in FIG. This input waveform is B (dashed line) in Figure 4.
become that way.
ここでプランジヤを動作させる為に第３図Ｃの
制御入力が駆動回路１へ印加されると、トランジ
スタTrが導通しプランジヤＰに電流が流れる。
この電流は検出抵抗R1により電圧変換される。
しかし第１図Ａの如くプランジヤ巻線による自己
誘導によりおくれを生じる。自己誘導はｅ＝−
Ldi／dt（Ｌはプランジヤ巻線のインダクタンス）
で示される。負荷力と発生力との関係より第４図
Ｘ点より内部鉄芯が移動を開始すると、インダク
タンスＬが増加し結果として自己誘導ｅが増加し
電流は減少する。このインダクタンスの増加はＬ
∝１／Ｇ（Ｇは磁路のギヤツプ）の関係より明白
である。この移動が第４図Ｘ―Ｙ間である。プラ
ンジヤ吸着動作が完了するとインダクタンスの増
加が停止し電流値は再び増加し、プランジヤ抵抗
分による定常値に達する。これが第４図Ｙ点以後
である。従つてこの電流検出波形のデイツプ点Ｙ
を検出する事でプランジヤ動作検出が可能とな
る。本実施例では積分器R2，C2により制御信号
を積分し積分波形第４図Ｂを発生させ、この波形
とトランジスタTrのエミツタよりの出力（第４
図Ａ）を電圧比較器CMPにおいて比較し、検出
出力Ｄを得ている。 When the control input shown in FIG. 3C is applied to the drive circuit 1 in order to operate the plunger, the transistor Tr becomes conductive and current flows through the plunger P.
This current is converted into voltage by the detection resistor R1 .
However, as shown in FIG. 1A, lag occurs due to self-induction by the plunger winding. Self-induction is e=-
Ldi/dt (L is the inductance of the plunger winding)
It is indicated by. When the internal iron core starts moving from point X in FIG. 4 based on the relationship between the load force and the generated force, the inductance L increases, and as a result, the self-induction e increases and the current decreases. This increase in inductance is L
This is clearer than the relationship ∝1/G (G is the gap in the magnetic path). This movement is between X and Y in FIG. When the plunger adsorption operation is completed, the inductance stops increasing, the current value increases again, and reaches a steady value due to the plunger resistance. This is after point Y in Figure 4. Therefore, the dip point Y of this current detection waveform
By detecting this, plunger operation can be detected. In this embodiment, the control signal is integrated by the integrators R 2 and C 2 to generate the integrated waveform B in FIG. 4, and this waveform and the output from the emitter of the transistor Tr (
Figure A) is compared with the voltage comparator CMP to obtain the detection output D.
発明の効果
以上述べた如く本発明によれば、プランジヤの
動作条件に無関係に動作検出を行なう事が出来、
無駄な待時間を極力短くする事によりプランジヤ
の高速制御が可能となる。Effects of the Invention As described above, according to the present invention, the operation can be detected regardless of the operating conditions of the plunger.
By minimizing unnecessary waiting time, high-speed control of the plunger becomes possible.
第１図はプランジヤを構成すコイルの回路図、
第２図は第１図に定電圧を印加した場合に電圧―
時間特性図、第３図は本発明の一実施例の回路
図、第４図はその動作の波形図である。
１……駆動回路、Ｐ……プランジヤ、R1……
電流検出用抵抗、C2R4……波形変換用コンデン
サ及び抵抗、CMP……電圧比較器。
Figure 1 is a circuit diagram of the coil that makes up the plunger.
Figure 2 shows the voltage when applying a constant voltage to Figure 1.
FIG. 3 is a circuit diagram of an embodiment of the present invention, and FIG. 4 is a waveform diagram of its operation. 1... Drive circuit, P... Plunger, R 1 ...
Resistor for current detection, C 2 R 4 ... Capacitor and resistor for waveform conversion, CMP ... Voltage comparator.
Claims (1)
駆動回路と、前記プランジヤを流れる電流を検出
する電流検出器と、前記電流検出器の出力を入力
とし、前記プランジヤに流れる電流のデイツプ点
を検出する検出手段とを備えたことを特徴とする
プランジヤ動作検出装置。1. A drive circuit that operates the plunger in response to a control signal, a current detector that detects the current flowing through the plunger, and a detection means that receives the output of the current detector as an input and detects a dip point of the current flowing through the plunger. A plunger motion detection device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58020239A JPS59144944A (en) | 1983-02-08 | 1983-02-08 | Plunger motion detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58020239A JPS59144944A (en) | 1983-02-08 | 1983-02-08 | Plunger motion detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59144944A JPS59144944A (en) | 1984-08-20 |
| JPS6311694B2 true JPS6311694B2 (en) | 1988-03-15 |
Family
ID=12021639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58020239A Granted JPS59144944A (en) | 1983-02-08 | 1983-02-08 | Plunger motion detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144944A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5359113B2 (en) * | 2008-08-22 | 2013-12-04 | 株式会社村田製作所 | Operation detection method, operation detection apparatus, and frequency adjustment apparatus for shutter mechanism |
-
1983
- 1983-02-08 JP JP58020239A patent/JPS59144944A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59144944A (en) | 1984-08-20 |
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