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JPH0276207A - Coil driving equipment for electromagnet - Google Patents

Coil driving equipment for electromagnet

Info

Publication number
JPH0276207A
JPH0276207A JP22641488A JP22641488A JPH0276207A JP H0276207 A JPH0276207 A JP H0276207A JP 22641488 A JP22641488 A JP 22641488A JP 22641488 A JP22641488 A JP 22641488A JP H0276207 A JPH0276207 A JP H0276207A
Authority
JP
Japan
Prior art keywords
circuit
pulse
output
voltage
electromagnet
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
Application number
JP22641488A
Other languages
Japanese (ja)
Inventor
Shinji Nishimura
西村 信二
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP22641488A priority Critical patent/JPH0276207A/en
Publication of JPH0276207A publication Critical patent/JPH0276207A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To hold a shock as small as possible when a coil driving equipment is powered ON by gaining a suction force according to a reaction of an electromagnet by a method wherein a pulse width of the coil driving equipment for the electromagnet which is switched ON at a large voltage and is kept driving at a small voltage is made smaller gradually at the time of switching ON as time elapses. CONSTITUTION:In a coil driving equipment in which a switch element 5 is turned ON and OFF by a smaller holding pulse signal than when the power is ON when a coil 4 of an electromagnet which is supplied with a d.c. voltage from a full wave rectification circuit is sucked in and after the power-on is completed, second timer circuits 21 are located in the required number in parallel with a first timer circuit 20 for starting the power-on. From the power-on is started till it is completed, a smaller pulse width than when the power-on is started is reduced in two or more steps. Therefore, such a suction force as to accord with a reaction of the electromagnet can be obtained. By this method, a shock can be eased when the power is turned ON.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は電子回路を利用した電磁石のコイル駆動装置に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an electromagnetic coil drive device using an electronic circuit.

(従来の技術) 従来の電磁石のコイル駆動装置を第7図に示す。図にお
いて、電源電圧1.スイッチ2を介して、フライホイー
ルダイオード6を並列に接続し、これを直列にスイッチ
素子5と電圧検出回路12と定電圧回路13が並列され
、定電圧回路13は時間設定回路11.ゲイン回路10
.パルス発生回路9.比較回路8.パルス出力回路7に
電圧を供給する。
(Prior Art) A conventional electromagnetic coil drive device is shown in FIG. In the figure, power supply voltage 1. A flywheel diode 6 is connected in parallel through a switch 2, and a switch element 5, a voltage detection circuit 12, and a constant voltage circuit 13 are connected in series.The constant voltage circuit 13 is connected to a time setting circuit 11. Gain circuit 10
.. Pulse generation circuit 9. Comparison circuit 8. A voltage is supplied to the pulse output circuit 7.

設定された電圧以下ではLレベル、設定された電圧以上
ではHレベルを出すS1出力及び電源電圧に比例した信
号を出すS2出力をそれぞれ出す電圧検出回路での81
出力は、前記Lレベルではパルス出力回路が能動状態に
なれないため、第8図乃至第10図に示すように比較回
路8の出力16がHレベルに変わっても、パルス出力回
路7の出力がLレベルのためスイッチング素子5は動作
しなく、コイル4は励磁されない。
81 in a voltage detection circuit that outputs an S1 output that outputs an L level when the voltage is lower than a set voltage and an H level when the voltage exceeds a set value, and an S2 output that outputs a signal proportional to the power supply voltage.
Since the pulse output circuit cannot become active when the output is at the L level, even if the output 16 of the comparison circuit 8 changes to the H level as shown in FIGS. 8 to 10, the output of the pulse output circuit 7 remains unchanged. Since it is at L level, the switching element 5 does not operate and the coil 4 is not excited.

電源電圧が設定以上の場合、電圧検出回路12の81出
力はHレベルに変わり、パルス出力回路7は能動状態に
なり、同時に電圧検出回路12の電源電圧に比例したS
2出力がゲイン回路10に入力され、出力14を比較回
路8に入れる。
When the power supply voltage is higher than the set value, the output 81 of the voltage detection circuit 12 changes to H level, the pulse output circuit 7 becomes active, and at the same time the S output proportional to the power supply voltage of the voltage detection circuit 12 changes to the H level.
The two outputs are input to the gain circuit 10, and the output 14 is input to the comparison circuit 8.

パルス発生回路9は一定周期のノコギリ波15を常に出
力し、比較回路8に入力しているので、前記ゲイン回路
10の出力14と比較し、一定周期のパルス16を発振
する。能動状態になっているパルス出力回路7に入力さ
れ、パワーアップしたパルス16と同じパルス17がパ
ルス出力回路より出される。スイッチング素子5はパル
ス出力回路7のパルス17に合った動きをして、コイル
4を励磁し、電圧18が印加され図示しない可動鉄心を
吸引させ、投入動作を完了させる。
Since the pulse generating circuit 9 always outputs a sawtooth wave 15 with a constant period and inputs it to the comparison circuit 8, it is compared with the output 14 of the gain circuit 10 and generates a pulse 16 with a constant period. A pulse 17, which is the same as the pulse 16 that is input to the pulse output circuit 7 which is in the active state and has been powered up, is output from the pulse output circuit. The switching element 5 moves in accordance with the pulse 17 of the pulse output circuit 7, excites the coil 4, applies a voltage 18, attracts a movable iron core (not shown), and completes the closing operation.

又、電圧検出回路12の81出力がHレベルになると時
間設定回路11にも同時に信号を送り時間カウントを開
始する。この時間設定回路12はあらかじめ、図示しな
い可動鉄心を吸引し投入動作を完了するに充分な時間に
設定してあり、この設定時間になるとゲイン回路10に
Hレベルの信号を送り、ゲイン切換を行ってゲイン回路
10の出力14′を変えて前述と同じ発振回路9の一定
周期のノコギリ波、15と比較回路8で比較して、一定
周期のパルス16よりも小さいパルス16−を発振して
パルス出力回路7はパワーアップしたパルス17よりも
小さいパルス17−を出力する。
Further, when the output 81 of the voltage detection circuit 12 becomes H level, a signal is simultaneously sent to the time setting circuit 11 to start counting the time. This time setting circuit 12 is set in advance to a time sufficient to attract a movable iron core (not shown) and complete the closing operation, and when this set time comes, it sends an H level signal to the gain circuit 10 and performs gain switching. By changing the output 14' of the gain circuit 10, the comparator circuit 8 compares the constant period sawtooth wave 15 of the oscillation circuit 9 as described above with the constant period pulse 16, and generates a pulse 16- which is smaller than the constant period pulse 16. The output circuit 7 outputs a pulse 17- smaller than the powered-up pulse 17.

スイッチング素子5はパルス17−に合った動きをして
、コイル4を継続して励磁し、電圧18′がかかり、図
示しない可動鉄心は吸着したままで保持させる。
The switching element 5 moves in accordance with the pulse 17-, continuously energizing the coil 4, applying a voltage 18', and holding the movable core (not shown) in an attracted state.

第11図の直流電磁石の反力と吸引力の関係を示したよ
うに、投入時の電磁石の吸引電圧は反力で決まり、電磁
石の大きさは自ずと決定され、投入完了時は反力と吸引
力のエネルギーの差から投入速度が大きくなり、投入衝
撃も大きくなり図示していない接点のチャタリング及び
周辺機器の衝撃誤動作に対して好ましくない影響を与え
ていた。
As shown in Figure 11, which shows the relationship between the reaction force and attraction force of a DC electromagnet, the attraction voltage of the electromagnet at the time of closing is determined by the reaction force, the size of the electromagnet is determined automatically, and when the closing is completed, the reaction force and attraction Due to the difference in force energy, the closing speed increases and the closing impact also increases, which has an undesirable effect on chattering of contacts (not shown) and shock malfunctions of peripheral equipment.

(発明が解決しようとする課題) 以上述べたように、従来の電磁石のコイル駆動装置にお
いては、投入開始以降の投入速度を簡単に変更すること
は出来ないのに対し、本発明は電磁石に応じて、投入段
階で電圧を継続的に変化させ、反力に応じた吸引力にな
るようにした電磁石のコイル駆動装置を提供することを
目的とする。
(Problems to be Solved by the Invention) As described above, in the conventional electromagnet coil drive device, it is not possible to easily change the charging speed after the start of charging, whereas the present invention Therefore, it is an object of the present invention to provide an electromagnetic coil drive device that continuously changes the voltage in the closing stage so that the attractive force corresponds to the reaction force.

[発明の構成コ (課題を解決するための手段) 本発明の電磁石のコイル駆動装置は、投入開始用の第1
の時間設定回路に並列に、それよりパルスが小さくなる
第2の時間設定回路を必要に応じた数を配置したことに
特徴を有する。
[Configuration of the Invention (Means for Solving the Problems) The electromagnet coil drive device of the present invention has a first coil drive device for starting charging.
The second time setting circuit is characterized in that a necessary number of second time setting circuits whose pulses are smaller than the second time setting circuit are arranged in parallel with the second time setting circuit.

(作用) 全波整流回路より直流電圧が供給される電磁石のコイル
、このコイルが吸引される時と、投入完了後投入時のパ
ルス信号より小さな保持パルス信号を出してスイッチ素
子を0N−OFFさせるコイル駆動装置において、投入
時を投入開始から投入完了するまで、投入開始パルス中
より小さなパルス中を2段もしくは各段にわたって、漸
減し電磁石の反力に応じた吸引力になるようにして、投
入時の衝撃を緩和させるものである。
(Function) An electromagnetic coil that is supplied with DC voltage from a full-wave rectifier circuit. When this coil is attracted, and after completion of closing, a holding pulse signal smaller than the pulse signal at closing is output to turn the switch element ON-OFF. In a coil drive device, from the start of closing to the completion of closing, the pulse is smaller than the closing start pulse in two stages or each stage, and the attraction force is gradually decreased to the point that corresponds to the reaction force of the electromagnet. It alleviates the impact of time.

(実施例) 以下本発明の一実施例につき第1図乃至第5図を参照し
て説明する。
(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

第1図において電源電圧1.スイッチ2を介して、ダイ
オードからなる整流回路3で直流全波を回路に供給する
。整流回路3にコイル4とフライホイールダイオード6
を並列に接続し、これと直列にスイッチング素子5と電
圧検出回路12と定電圧回路13が並列に接続され、定
電圧回路13は第1の時間設定回路20.第2の時間設
定回路21、ゲイン回路19.パルス発生回路9.比較
回路8.パルス出力回路7に電圧を供給する。
In FIG. 1, the power supply voltage 1. A rectifier circuit 3 consisting of a diode supplies a DC full wave to the circuit via a switch 2. Coil 4 and flywheel diode 6 in rectifier circuit 3
are connected in parallel, and a switching element 5, a voltage detection circuit 12, and a constant voltage circuit 13 are connected in series with this, and the constant voltage circuit 13 is connected to the first time setting circuit 20. Second time setting circuit 21, gain circuit 19. Pulse generation circuit 9. Comparison circuit 8. A voltage is supplied to the pulse output circuit 7.

設定された電圧以下ではLレベル、設定された電圧以上
ではHレベルを出すS1出力、電源電圧に比例した信号
を出すS2出力をそれぞれ出力する電圧検出回路12に
おいて、電源電圧が設定以下の場合は電圧検出回路12
の81出力はLレベルでパルス出力回路7は能動状態に
なれないため、比較回路8の出力16がHレベルに変わ
っても、パルス出力回路7の出力はLレベルのためスイ
ッチング素子5は動作しないので、コイル4は励磁され
ない。
In the voltage detection circuit 12, which outputs an S1 output that outputs an L level when the voltage is below a set voltage, an H level when the voltage is above the set voltage, and an S2 output that outputs a signal proportional to the power supply voltage, when the power supply voltage is below the set value, Voltage detection circuit 12
Since the output 81 of is L level and the pulse output circuit 7 cannot be activated, even if the output 16 of the comparator circuit 8 changes to H level, the output of the pulse output circuit 7 is L level and the switching element 5 does not operate. Therefore, the coil 4 is not excited.

電源電圧が設定以上の場合、電圧検出回路12の81出
力はHレベルに変わり、パルス出力回路7は能動状態に
なり、同時に電圧検出回路12の電源電圧に比例したS
2出力がゲイン回路19に入力され、出力14を比較回
路8に入力する。
When the power supply voltage is higher than the set value, the output 81 of the voltage detection circuit 12 changes to H level, the pulse output circuit 7 becomes active, and at the same time the S output proportional to the power supply voltage of the voltage detection circuit 12 changes to the H level.
The two outputs are input to the gain circuit 19, and the output 14 is input to the comparison circuit 8.

パルス発生回路9は一定周期のノコギリ波15を常に出
力し比較回路8に入力して、パワーアップしたパルス2
3と同じパルス24がパルス出力回路7より出て、スイ
ッチング素子5はパルス出力回路7のパルス24に合っ
た動きをしてコイル4を励磁して電圧25がかかり、図
示しない可動鉄心を吸引し投入開始する。
The pulse generation circuit 9 always outputs a sawtooth wave 15 with a constant period, inputs it to the comparison circuit 8, and generates a powered-up pulse 2.
The same pulse 24 as in 3 is output from the pulse output circuit 7, and the switching element 5 moves in accordance with the pulse 24 of the pulse output circuit 7, energizing the coil 4 and applying a voltage 25, which attracts the movable iron core (not shown). Start inputting.

電圧検出回路12の81出力がHレベルになると第1の
時間設定回路20にも同時に信号を送り、時間カウント
を開始する。
When the output 81 of the voltage detection circuit 12 becomes H level, a signal is simultaneously sent to the first time setting circuit 20 to start time counting.

設定時間Iの後、ゲイン回路19にHレベルの信号を送
り、ゲイン切換を行ってゲイン回路19の出力23″に
変えて上記と同じ、発振回路9の一定周期のノコギリ波
15とを比較回路8で比較して一定周期のパルス23よ
りも小さいパルス23゛を発振して、パルス出力回路7
はパワーアップしたパルス24よりも小さいパルス24
″を出してスイッチング素子5はパルス24゛に合った
動きをして、コイル4に電圧を与え、投入動作が完了す
る。投入動作完了後、第2の時間設定回路21で上記と
同様の、さらにパルス巾の小さい22”、23”、24
°のパルスによってコイル4は継続して励磁され、電圧
25”がかかり、図示しない可動鉄心は吸着したままで
保持される。
After the set time I, an H level signal is sent to the gain circuit 19, the gain is changed to the output 23'' of the gain circuit 19, and the comparison circuit compares it with the constant period sawtooth wave 15 of the oscillation circuit 9, which is the same as above. 8, the pulse output circuit 7 oscillates a pulse 23, which is smaller than the constant period pulse 23.
is a pulse 24 smaller than the powered-up pulse 24
'', the switching element 5 moves in accordance with the pulse 24'', applies voltage to the coil 4, and the closing operation is completed. After the closing operation is completed, the second time setting circuit 21 performs the same operation as described above. 22", 23", 24 with smaller pulse width
The coil 4 is continuously excited by the pulse of .degree., a voltage of 25" is applied, and the movable core (not shown) is held in an attracted state.

尚、投入時のパルス巾変更回路を必要数配置すると、上
記の動作がくりかえし行われる。
It should be noted that if a necessary number of pulse width changing circuits at the time of input are arranged, the above operation will be repeated.

[発明の効果] 以上述べたように本発明は大きな電圧で投入し、小さな
電圧で保持する電磁石のコイル駆動装置において一投入
時のパルス巾を時間毎に順に小さくなるようにして、電
磁石の反力に応じた吸引力を得るようにしたもので、投
入エネルギーを最小にして、投入時の衝撃を最小にする
ことができる。
[Effects of the Invention] As described above, the present invention provides a coil drive device for an electromagnet that applies a large voltage and maintains it at a small voltage. It is designed to obtain a suction force that corresponds to the force applied, so that the input energy can be minimized and the impact at the time of input can be minimized.

【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を示す電磁石のコイル駆動装
置のブロック図、第2図乃至第5図は作用説明用の各部
の信号波形図、第6図は電磁石の反力−吸引力の関係を
示す線図、第7図は従来の電磁石のコイル駆動装置を示
すブロック図、第8図乃至第10図は従来例の各部の信
号波形図。 第11図は電磁石の反力−吸引力の関係を示す線図であ
る。 4・・・操作コイル、  5・・・スイッチング素子。 7・・・パルス出力回路、  8・・・比較回路。 9・・・パルス発生回路、  12・・・電圧検出回路
113・・・定電圧回路、  19・・・ゲイン回路。 20・・・第1のタイマ回路。 21・・・第2のタイマ回路。 代理人 弁理士 則 近 憲 佑 同       第  子  丸  健第2図 第3図 第4図 第6図 弔 6 囚 第7図 第5図 第2図
Fig. 1 is a block diagram of an electromagnet coil drive device showing an embodiment of the present invention, Figs. 2 to 5 are signal waveform diagrams of each part for explaining the operation, and Fig. 6 is the reaction force-attraction force of the electromagnet. FIG. 7 is a block diagram showing a conventional electromagnet coil drive device, and FIGS. 8 to 10 are signal waveform diagrams of various parts of the conventional example. FIG. 11 is a diagram showing the relationship between the reaction force and attraction force of an electromagnet. 4... Operating coil, 5... Switching element. 7...Pulse output circuit, 8...Comparison circuit. 9... Pulse generation circuit, 12... Voltage detection circuit 113... Constant voltage circuit, 19... Gain circuit. 20...first timer circuit. 21...Second timer circuit. Agent Patent Attorney Nori Ken Yudo Chika Ken Maru Figure 2 Figure 3 Figure 4 Figure 6 Condolences 6 Prisoners Figure 7 Figure 5 Figure 2

Claims (1)

【特許請求の範囲】[Claims]  電磁石を励磁する操作コイルと、この操作コイルに直
列に接続されパルス信号により開閉するスイッチング素
子と、電圧検出回路で電源電圧を検出しこの電圧が一定
値以上のときパルス発生回路と前記電圧検出回路とで検
出した値を比較する比較回路と、この比較回路の出力に
よって電源電圧の大きさに応じた一定周期の投入パルス
を出力するパルス出力回路と、このパルス出力回路の出
力によってスイッチング素子を開閉し第1の時間設定回
路で決まる設定時間後、前記投入パルスのパルス巾より
小さな一定周期のパルスを出力させる第2の時間設定回
路を前記第1の時間設定回路に並列して接続し、この第
2の時間設定回路で決まる設定時間後、前記電圧検出回
路の電源電圧の大きさに応じた検出値を交換するゲイン
回路と、このゲイン回路の出力と前記パルス発生回路と
を比較回路で比較し、この比較回路の出力によって前記
第2の時間設定回路によるパルスより小さな一定周期の
パルスを出力するパルス出力回路と、これらの回路に直
流制御電圧を与える定電圧回路とを備えたことを特徴と
する電磁石のコイル駆動装置。
An operating coil that excites the electromagnet, a switching element that is connected in series to this operating coil and opens and closes in response to a pulse signal, a voltage detection circuit that detects the power supply voltage, and when this voltage exceeds a certain value, a pulse generation circuit and the voltage detection circuit. a comparator circuit that compares the values detected by the comparator, a pulse output circuit that uses the output of this comparator circuit to output a closing pulse with a constant cycle depending on the magnitude of the power supply voltage, and an output of this pulse output circuit that opens and closes a switching element. After a set time determined by the first time setting circuit, a second time setting circuit is connected in parallel to the first time setting circuit to output a pulse with a constant period smaller than the pulse width of the input pulse. After a set time determined by the second time setting circuit, a gain circuit exchanges the detected value according to the magnitude of the power supply voltage of the voltage detection circuit, and a comparison circuit compares the output of this gain circuit with the pulse generation circuit. and a pulse output circuit that outputs a pulse with a constant period smaller than the pulse produced by the second time setting circuit based on the output of the comparison circuit, and a constant voltage circuit that supplies a DC control voltage to these circuits. An electromagnetic coil drive device.
JP22641488A 1988-09-12 1988-09-12 Coil driving equipment for electromagnet Pending JPH0276207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22641488A JPH0276207A (en) 1988-09-12 1988-09-12 Coil driving equipment for electromagnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22641488A JPH0276207A (en) 1988-09-12 1988-09-12 Coil driving equipment for electromagnet

Publications (1)

Publication Number Publication Date
JPH0276207A true JPH0276207A (en) 1990-03-15

Family

ID=16844749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22641488A Pending JPH0276207A (en) 1988-09-12 1988-09-12 Coil driving equipment for electromagnet

Country Status (1)

Country Link
JP (1) JPH0276207A (en)

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