JPS5822596A - Speed controlling circuit for dc motor - Google Patents
Speed controlling circuit for dc motorInfo
- Publication number
- JPS5822596A JPS5822596A JP56120317A JP12031781A JPS5822596A JP S5822596 A JPS5822596 A JP S5822596A JP 56120317 A JP56120317 A JP 56120317A JP 12031781 A JP12031781 A JP 12031781A JP S5822596 A JPS5822596 A JP S5822596A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- motor
- differential amplifier
- switch
- terminal
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/288—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、直流モータの速度制御回路に関するもので、
一定回転速度で駆動せしめる駆動系（定速度制御系）と
モータの負荷に応じて回転数が低下する駆動系（定電圧
定抵抗制御系）の２つのモードが簡単な構成により選択
できるよう構成したものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speed control circuit for a DC motor,
A simple configuration allows you to select between two modes: a drive system that drives at a constant rotation speed (constant speed control system) and a drive system that reduces the rotation speed according to the motor load (constant voltage constant resistance control system). It is something.
第１図は定速度制御の原理図を示すもので、電源１を負
抵抗成分−Ｒｉ を介して、内部抵抗Ｒｉの直流モー
タ２に接続したものである。FIG. 1 shows a principle diagram of constant speed control, in which a power source 1 is connected to a DC motor 2 having an internal resistance Ri via a negative resistance component -Ri.
すなわち、負抵抗成分−Ｒｉ と内部抵抗Ｒｉ とが
常に相殺されるよう構成することによって、モータ２は
電源１の電圧に応じた定速度で回転駆動されるものであ
る。That is, by configuring the motor 2 so that the negative resistance component -Ri and the internal resistance Ri always cancel each other out, the motor 2 is driven to rotate at a constant speed according to the voltage of the power source 1.
第２図は定電圧定抵抗制御系の原理図であり、第１図の
負抵抗−Ｒｉ に代えて一定の抵抗Ｒ８を使用したも
のであシ、モータ２の負荷によって、その回転数が変化
する。Figure 2 is a principle diagram of a constant voltage constant resistance control system, in which a constant resistor R8 is used in place of the negative resistance -Ri in Figure 1, and the rotation speed changes depending on the load on the motor 2. do.
従来この２つのモードを選択的に切換える装置として第
３図に示すものが考えられている。Conventionally, a device shown in FIG. 3 has been considered as a device for selectively switching between these two modes.
第３図において、基準電源３は抵抗Ｒ１を介して差動増
幅器４の子端子に接続され、その差動増幅器４の出力は
コレクタが電源Ｖｃｃ に接続されたトランジスタＱ
１ にベースに接続されている。In FIG. 3, the reference power supply 3 is connected to the child terminal of a differential amplifier 4 via a resistor R1, and the output of the differential amplifier 4 is connected to a transistor Q whose collector is connected to the power supply Vcc.
1 is connected to the base.
そして、このトランジスタＱ１ のエミッタハ抵抗３べ
゛
Ｒ３，Ｒｏ、モータ２の内部抵抗Ｒｉを介してモータ２
に接続されるとともに、第１のスイッチ５゜抵抗Ｒ２を
介して、前記差動増幅器４の十入力端子に接続されてい
る。The emitter of this transistor Q1 is connected to the motor 2 through the resistor 3, R3, Ro, and the internal resistance Ri of the motor 2.
The first switch is connected to the input terminal of the differential amplifier 4 via a 5° resistor R2.
まだ、抵抗Ｒ３とＲ８の接続点は前記差動増幅器４の一
入力端子に接続され、前記抵抗Ｒ６に並列になるよう第
２の切換スイッチ６が接続されている。Still, the connection point between the resistors R3 and R8 is connected to one input terminal of the differential amplifier 4, and the second changeover switch 6 is connected in parallel to the resistor R6.
以上の構成において、定速度制御モード時には、第１の
スイッチ６と第２のスイッチ６をいずれも閉成ＯＮせし
める。In the above configuration, in the constant speed control mode, both the first switch 6 and the second switch 6 are closed and turned ON.
そして、定電圧定抵抗制御モード時には、第１のスイッ
チ６と第２のスイッチ６とをいずれも開放ＯＦＦ せし
めるものである。In the constant voltage constant resistance control mode, both the first switch 6 and the second switch 6 are opened and OFF.
このように、従来の切換駆動系には２つのスイッチ６．
６を必要としていた。In this way, the conventional switching drive system includes two switches 6.
I needed 6.
本発明は、１つのスイッチで構成可能としたものであり
、その一実施例を第４図に示す。The present invention can be configured with one switch, and one embodiment thereof is shown in FIG.
第４図において、基準電源３は抵抗Ｒ４を介して差動増
幅器４の十入力端に接続され、その差動増幅器４の出力
端は、コレクタが電源ｖＣＣに接続さレタトランジスタ
Ｑ１ のベースに接続されている。In FIG. 4, the reference power supply 3 is connected to the input terminal of a differential amplifier 4 via a resistor R4, and the output terminal of the differential amplifier 4 has its collector connected to the power supply vCC and the base of a letter transistor Q1. has been done.
このトランジスタＱ のエミッタは抵抗Ｒ８、モ−タの
内部抵抗分Ｒｉを通してモータ２に接続されている。The emitter of this transistor Q is connected to the motor 2 through a resistor R8 and an internal resistance Ri of the motor.
そして、前記抵抗Ｒ８に並列に抵抗Ｒ６とＲ７の直列回
路が接続されており、この抵抗Ｒ６とＲ７の接続点は、
前記差動増幅器４の」−入力端子に接続されている。A series circuit of resistors R6 and R7 is connected in parallel to the resistor R8, and the connection point of the resistors R6 and R7 is
It is connected to the − input terminal of the differential amplifier 4.
寸だ、トランジスタＱ１ のコレクタは他の抵抗に比べ
て十分大きな抵抗値の抵抗Ｒ５を介して前記差動増幅器
４の一入力端子に接続され、抵抗Ｒ８と内部抵抗Ｒｉの
接続点はスイッチ７を介して前記差動増幅器４の一入力
端子に接続されている。The collector of the transistor Q1 is connected to one input terminal of the differential amplifier 4 via a resistor R5, which has a sufficiently large resistance value compared to other resistors, and the connection point between the resistor R8 and the internal resistor Ri is connected to the switch 7. It is connected to one input terminal of the differential amplifier 4 via the differential amplifier 4.
以上の構成において、定電圧定抵抗制御の場合にはスイ
ッチ７が開放ＯＦＦ される。In the above configuration, the switch 7 is opened and OFF in the case of constant voltage constant resistance control.
この場合、電源■ｃＣと内部抵抗Ｒｉの入力側間の図に
示す定抵抗Ｒ８の値となる。In this case, the value of the constant resistor R8 shown in the figure between the power supply cC and the input side of the internal resistor Ri is obtained.
まだ、速度制御の場合には、スイッチ７が閉成５公−パ ＯＮされる。In the case of speed control, switch 7 is still closed. It will be turned on.
この場合、電源■ＣＣと内部抵抗Ｒｉの入力側間の見か
けの抵抗値は、
この抵抗値をモータの内部抵抗ＲｉＯ値と一致せしめる
と、定速制御が可能になるものである。In this case, if the apparent resistance value between the power supply CC and the input side of the internal resistance Ri is made to match the internal resistance RiO value of the motor, constant speed control becomes possible.
以」二のように、本発明によれば、定速制御と定電圧定
抵抗制御の切換を１つのスイッチで可能となるものであ
り、その構成は簡略化されるものであり、磁気記録再生
装置のリールモータの制御回路として効果の大きいもの
である。As described above, according to the present invention, it is possible to switch between constant speed control and constant voltage constant resistance control with a single switch, and the configuration is simplified. This is highly effective as a control circuit for the reel motor of the device.
第１図は直流モータの定速度制御系を示す原理図、第２
図は直流モータの定電圧定抵抗制御系を示す原理図、第
３図は従来の定速度制御系と定電圧定抵抗制御系の切換
回路を示す電気的結線図、第４図は本発明の一実施例を
示す電気的結線図である。
１・・・・・・電源、２・・・・・・直流モータ、３・
・・・・・基準電源、４・・・・・・差動増幅器。Figure 1 is a principle diagram showing the constant speed control system of a DC motor, Figure 2
The figure is a principle diagram showing a constant voltage constant resistance control system for a DC motor, Figure 3 is an electrical wiring diagram showing a switching circuit between a conventional constant speed control system and a constant voltage constant resistance control system, and Figure 4 is a diagram showing the switching circuit between a conventional constant speed control system and a constant voltage constant resistance control system. FIG. 2 is an electrical wiring diagram showing one embodiment. 1...Power supply, 2...DC motor, 3.
...Reference power supply, 4...Differential amplifier.
Claims (1)
第１の抵抗を介して直流モータに接続し、′ 基準電圧
を第２の抵抗を介して差動増幅器の一方の第１の端子に
印加するとともに、前記第１の抵抗の中間点よりの電圧
を前記差動増幅器の第１の端子に接続し、前記制御素子
と第１の抵抗との接続点を第３の抵抗を介して前記差動
増幅器の第２の入力端子に接続するとともに、前記第１
の抵抗と直流モータの接続点をスイッチ７を介して前記
差動増幅器の第２の入力端子に接続したことを特徴とす
る直流モータの速度制御回路。A power source is connected to the DC motor via a control element whose conductivity changes according to a control signal and a first resistor, and a reference voltage is connected to one first terminal of the differential amplifier via a second resistor. At the same time, the voltage from the midpoint of the first resistor is connected to the first terminal of the differential amplifier, and the connection point between the control element and the first resistor is connected through a third resistor. connected to a second input terminal of the differential amplifier;
A speed control circuit for a DC motor, characterized in that a connection point between the resistor and the DC motor is connected via a switch 7 to a second input terminal of the differential amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56120317A JPS5822596A (en) | 1981-07-30 | 1981-07-30 | Speed controlling circuit for dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56120317A JPS5822596A (en) | 1981-07-30 | 1981-07-30 | Speed controlling circuit for dc motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5822596A true JPS5822596A (en) | 1983-02-09 |
| JPH0121712B2 JPH0121712B2 (en) | 1989-04-21 |
Family
ID=14783244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56120317A Granted JPS5822596A (en) | 1981-07-30 | 1981-07-30 | Speed controlling circuit for dc motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5822596A (en) |
-
1981
- 1981-07-30 JP JP56120317A patent/JPS5822596A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0121712B2 (en) | 1989-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4710684A (en) | Drive circuit for brushless DC motors | |
| JPS5822596A (en) | Speed controlling circuit for dc motor | |
| JP2594040B2 (en) | Motor control circuit | |
| JPH0717280Y2 (en) | Hall motor drive circuit | |
| JP2629199B2 (en) | Forward and reverse rotation device for DC motor | |
| JPS60255083A (en) | Drive device for motor | |
| JPS634286Y2 (en) | ||
| JP2946526B2 (en) | Drive device for DC motor | |
| JPS6116795Y2 (en) | ||
| JPH06205596A (en) | Motor controller | |
| JPS6017956Y2 (en) | switching circuit | |
| SU699645A1 (en) | Ac motor control device | |
| JPS61135391A (en) | Rotation controller of dc motor | |
| JPS6242476B2 (en) | ||
| JPH0191687A (en) | Controlling circuit for dc motor | |
| JPS6025397U (en) | Step motor rotation control device | |
| JPS60163433U (en) | Motor control circuit in camera | |
| JPS6141397U (en) | Motor drive control device | |
| JPH0217993U (en) | ||
| JPS59119795U (en) | DC motor speed control circuit | |
| JPS59189491U (en) | Motor drive circuit | |
| JPS6149587U (en) | ||
| JPS6440296U (en) | ||
| JPS5851791A (en) | Dc brushless motor | |
| JPS63314190A (en) | Driving device for dc motor |