JPH031824Y2 - - Google Patents

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Publication number
JPH031824Y2
JPH031824Y2 JP1985082248U JP8224885U JPH031824Y2 JP H031824 Y2 JPH031824 Y2 JP H031824Y2 JP 1985082248 U JP1985082248 U JP 1985082248U JP 8224885 U JP8224885 U JP 8224885U JP H031824 Y2 JPH031824 Y2 JP H031824Y2
Authority
JP
Japan
Prior art keywords
motor
circuit
deviation
hysteresis
output
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
Application number
JP1985082248U
Other languages
Japanese (ja)
Other versions
JPS61197565U (en
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 filed Critical
Priority to JP1985082248U priority Critical patent/JPH031824Y2/ja
Publication of JPS61197565U publication Critical patent/JPS61197565U/ja
Application granted granted Critical
Publication of JPH031824Y2 publication Critical patent/JPH031824Y2/ja
Expired legal-status Critical Current

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  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Description

【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、記録ヘツドを自動平衡させて記録
するような自動平衡計器に関するものである。
[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an automatic balancing instrument that performs recording by automatically balancing a recording head.

〔従来の技術〕[Conventional technology]

自動平衡計器に使用されるモータとして、交流
モータの他に直流モータがある。
In addition to AC motors, there are DC motors as motors used in automatic balancing instruments.

この種の自動平衡計器は、第3図で示すように
入力端子1の入力信号と摺動抵抗2の帰還信号と
の偏差を偏差増幅器3で比較し、その偏差出力を
トランジスタTr1,Tr2,R1,R2、電源+
V,−Vよりなる駆動回路4に供給し、直流モー
タ5を駆動している。つまり、偏差増幅器3の偏
差出力の正負に応じてトランジスタTr1,TR2
のいずれかがオンとなり、直流モータ5を正転、
反転駆動させている。この直流モータ5の回転
は、摺動抵抗2のブラシを移動させ、入力信号の
大きさに帰還信号が一致して偏差がゼロのとき直
流モータ5は自動平衡して停止する。また、直流
モータ5に記録ヘツド6が連動し、入力信号の大
きさに応じた目盛位置で記録が行われる。
This type of automatic balance meter compares the deviation between the input signal of the input terminal 1 and the feedback signal of the sliding resistor 2 using a deviation amplifier 3, as shown in FIG. , R2, power supply +
The voltage is supplied to a drive circuit 4 consisting of V and -V to drive a DC motor 5. In other words, transistors Tr1 and TR2 are
is turned on, causing the DC motor 5 to rotate forward,
It is driven in reverse. This rotation of the DC motor 5 moves the brush of the sliding resistor 2, and when the feedback signal matches the magnitude of the input signal and the deviation is zero, the DC motor 5 automatically balances and stops. Further, the recording head 6 is linked to the DC motor 5, and recording is performed at a scale position corresponding to the magnitude of the input signal.

〔この考案が解決しようとする問題点〕[Problem that this idea attempts to solve]

この直流モータ5を駆動する電圧と偏差との関
係は、第4図で示すようにリニアな関係となる。
このため平衡点付近ではトルクが不足するため、
なかなか再起動せず不感帯が広くなり指示精度が
悪くなつてしまう問題点があつた。また、これを
改良するためゲインを大きくすると、今度はハン
チング現象を生じ不安定となる問題点があつた。
The relationship between the voltage that drives the DC motor 5 and the deviation is a linear relationship as shown in FIG. 4.
For this reason, there is a lack of torque near the equilibrium point, so
There was a problem in that the system did not restart easily, resulting in a wide dead zone and poor indication accuracy. In addition, when the gain was increased to improve this problem, a hunting phenomenon occurred, resulting in instability.

この考案の目的は、直流モータの起動のトルク
不足を解消するようにした自動平衡計器を提供す
ることである。
The purpose of this invention is to provide a self-balancing instrument that eliminates the lack of torque when starting a DC motor.

〔問題点を解決するための手段〕[Means for solving problems]

この発明は、偏差増幅器の偏差出力に基きヒス
テリシス出力を発生するヒステリシス回路と、こ
のヒステリシス回路の正負の力に応じて直流モー
タを正転、反転駆動する回路と、ヒステリシス回
路のゼロ出力を検出して直流モータをロツクする
ゼロ検出回路とを備えるようにした自動平衡計器
である。
This invention includes a hysteresis circuit that generates a hysteresis output based on the deviation output of a deviation amplifier, a circuit that drives a DC motor in forward or reverse rotation according to the positive and negative forces of this hysteresis circuit, and a circuit that detects the zero output of the hysteresis circuit. This automatic balancing instrument is equipped with a zero detection circuit that locks the DC motor.

〔実施例〕〔Example〕

第1図は、この考案の一実施例を示す構成説明
図で、第3図と同一符号は同等の構成要素を示
す。図において、入力端子1の入力信号と摺動抵
抗2の帰還信号との偏差を偏差増幅器3で比較
し、その偏差力は、入力抵抗R3を介し帰還回路
にダイオードD1,D2,D3,D4を設け、抵
抗R4,R5を介して電圧+V、−Vが供給され
る演算増幅器OP等よりなるヒステリシス(比較)
回路7に供給され、第2図のような偏差ゼロ付近
でゼロ、それ以外で十分に高い駆動電圧であるヒ
ステリシス出力が得られる。このヒステリシス回
路7の正負の高い駆動電圧に対応して駆動回路4
のトランジスタTr1、Tr2のいずれかがオンと
し、直流モータ5を正転、反転駆動し、この直流
モータ5と連動した摺動抵抗2のブラシを移動さ
せ、自動平衡動作を行う。また、ヒステリシス回
路7のゼロ出力は、ゼロ検出回路8により検出さ
れ、トランジスタTr1,Tr2の出力をスイツチ
Sによりアースする等し直流モータ5をロツクす
る。なお、デツドゾーン・コンパレータとも呼ば
れるヒステリシス回路7については、実公昭55−
36911号公報等を参照。
FIG. 1 is an explanatory diagram showing an embodiment of the invention, and the same reference numerals as in FIG. 3 indicate the same components. In the figure, the deviation between the input signal of the input terminal 1 and the feedback signal of the sliding resistor 2 is compared by the deviation amplifier 3, and the deviation power is transmitted to the feedback circuit through the input resistor R3 through the diodes D1, D2, D3, D4. Hysteresis (comparison) consisting of an operational amplifier OP, etc., to which voltages +V and -V are supplied via resistors R4 and R5.
The voltage is supplied to the circuit 7, and a hysteresis output is obtained, which is zero when the deviation is near zero, as shown in FIG. 2, and is a sufficiently high driving voltage at other times. The drive circuit 4 corresponds to the high positive and negative drive voltages of the hysteresis circuit 7.
Either transistor Tr1 or Tr2 is turned on to drive the DC motor 5 in forward or reverse rotation, and the brush of the sliding resistor 2 interlocked with the DC motor 5 is moved to perform an automatic balancing operation. Further, the zero output of the hysteresis circuit 7 is detected by the zero detection circuit 8, and the outputs of the transistors Tr1 and Tr2 are grounded by the switch S, thereby locking the DC motor 5. The hysteresis circuit 7, also called a dead zone comparator, is
See Publication No. 36911, etc.

つまり、第2図で示すように、直流モータ5の
駆動電圧は、偏差がゼロ付近で完全にゼロで、し
かもゼロ検出回路8により完全に動作が停止さ
れ、また、偏差がゼロ範囲を脱すると正または負
の大きい駆動電圧となるので直ちに直流モータ5
は回転を開始する。
In other words, as shown in FIG. 2, the drive voltage of the DC motor 5 is completely zero when the deviation is around zero, and the operation is completely stopped by the zero detection circuit 8, and when the deviation is out of the zero range. Since the drive voltage is large, positive or negative, the DC motor 5
starts rotating.

このようにして、平衡点での完全な停止と迅速
な起動を可能としている。
In this way, a complete stop at the equilibrium point and a rapid start-up are possible.

〔考案の効果〕[Effect of idea]

以上述べたように、この考案は、偏差に対する
ヒステリシス回路の出力により直流モータを駆動
するようにしているので、モータの起動が容易
で、また平衡点付近でモータは完全にロツクさ
れ、不感帯も少く、きわめて高性能のものとな
る。特に直流電源で駆動する自動平衡形記録計に
適用して好適である。
As mentioned above, in this invention, the DC motor is driven by the output of the hysteresis circuit for deviations, making it easy to start the motor, and the motor is completely locked near the equilibrium point, reducing the dead zone. , resulting in extremely high performance. It is particularly suitable for application to an automatic balancing recorder driven by a DC power source.

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

第1図、第2図は、この考案の一実施例を示す
説明図、第3図、第4図は、従来例を示す説明図
である。 1……入力端子、2……摺動抵抗、3……偏差
増幅器、4……駆動回路、5……直流モータ、6
……記録装置、7……ヒステリシス回路、8……
ゼロ検出回路。
FIGS. 1 and 2 are explanatory diagrams showing one embodiment of this invention, and FIGS. 3 and 4 are explanatory diagrams showing a conventional example. 1... Input terminal, 2... Sliding resistance, 3... Deviation amplifier, 4... Drive circuit, 5... DC motor, 6
...Recording device, 7...Hysteresis circuit, 8...
Zero detection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 入力信号と帰還信号とを偏差増幅器で比較しこ
の偏差に応じて直流モータを駆動して自動平衡さ
せる自動平衡計器において、前記偏差増幅器の偏
差出力に基きヒステリシス出力を発生するヒステ
リシス回路と、このヒステリシス回路の正負の出
力に応じて直流モータを正転・反転駆動する駆動
回路と、前記ヒステリシス回路のゼロ出力を検出
してその出力をアースし直流モータをロツクする
ゼロ検出回路とを備えたことを特徴とする自動平
衡計器。
An automatic balancing instrument that compares an input signal and a feedback signal using a deviation amplifier and drives a DC motor according to the deviation to automatically balance the device, includes a hysteresis circuit that generates a hysteresis output based on the deviation output of the deviation amplifier; The present invention includes a drive circuit that drives the DC motor in forward or reverse rotation according to the positive and negative outputs of the circuit, and a zero detection circuit that detects the zero output of the hysteresis circuit and grounds the output to lock the DC motor. Features an automatic balancing instrument.
JP1985082248U 1985-05-31 1985-05-31 Expired JPH031824Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985082248U JPH031824Y2 (en) 1985-05-31 1985-05-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985082248U JPH031824Y2 (en) 1985-05-31 1985-05-31

Publications (2)

Publication Number Publication Date
JPS61197565U JPS61197565U (en) 1986-12-10
JPH031824Y2 true JPH031824Y2 (en) 1991-01-18

Family

ID=30629791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985082248U Expired JPH031824Y2 (en) 1985-05-31 1985-05-31

Country Status (1)

Country Link
JP (1) JPH031824Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54100777A (en) * 1978-01-25 1979-08-08 Meidensha Electric Mfg Co Ltd Automatic potential balancer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54100777A (en) * 1978-01-25 1979-08-08 Meidensha Electric Mfg Co Ltd Automatic potential balancer

Also Published As

Publication number Publication date
JPS61197565U (en) 1986-12-10

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