JPS61273191A - Electronic governor - Google Patents
Electronic governorInfo
- Publication number
- JPS61273191A JPS61273191A JP60111884A JP11188485A JPS61273191A JP S61273191 A JPS61273191 A JP S61273191A JP 60111884 A JP60111884 A JP 60111884A JP 11188485 A JP11188485 A JP 11188485A JP S61273191 A JPS61273191 A JP S61273191A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- voltage
- reference voltage
- resistor
- electronic governor
- 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
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
- H02P7/2885—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 whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、モータの速度調整を電子的に行う電子ガバ
ナに係り、特に、モータの回転速度の可変に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic governor that electronically adjusts the speed of a motor, and particularly relates to varying the rotational speed of a motor.
電子ガバナは、第２図に示すように構成されており、こ
の場合、その主制御部２はＩＣ化されている。この主制
御部２は、トランジスタ４．６、誤差増幅器８、電圧源
１０および抵抗１２．１４からなっており、トランジス
タ４のコレクタにはモータ端子１６、トランジスタ６の
コレクタには制御端子１８、誤差増幅器８には電源端子
２０、接地端子２２がそれぞれ設けられている。The electronic governor is constructed as shown in FIG. 2, and in this case, its main control section 2 is implemented as an IC. This main control section 2 consists of a transistor 4.6, an error amplifier 8, a voltage source 10, and a resistor 12.14. The collector of the transistor 4 has a motor terminal 16, the collector of the transistor 6 has a control terminal 18, an error The amplifier 8 is provided with a power terminal 20 and a ground terminal 22, respectively.
そして、電源とモータ端子１６との間には制御対象とし
てのモータ２４、電源と制御端子１８との間には、モー
タ２４の内部インピーダンスに対応するトルク制御抵抗
２６、モータ端子１６と制御端子１８との間には速度制
御抵抗２８が外付けされ、電源端子２０と接地端子２２
との間には電源が供給され、ＶＣＣはその電圧を示す。A motor 24 as a controlled object is connected between the power source and the motor terminal 16, a torque control resistor 26 corresponding to the internal impedance of the motor 24 is connected between the power source and the control terminal 18, and a torque control resistor 26 is connected between the power source and the control terminal 18. A speed control resistor 28 is externally connected between the power supply terminal 20 and the ground terminal 22.
Power is supplied between the two, and VCC indicates the voltage.
このような電子ガバナにおいて、トランジスタ４はモー
タ２４に駆動電流を流す駆動回路、トランジスタ６は抵
抗２６に基準電流を流すための基準電流回路を構成し、
トランジスタ６のエミッタにおける電流密度を１とする
と、トランジスタ４のエミッタにおける電流密度はに倍
に設定されている。In such an electronic governor, the transistor 4 constitutes a drive circuit that causes a drive current to flow through the motor 24, and the transistor 6 constitutes a reference current circuit that causes a reference current to flow through the resistor 26.
If the current density at the emitter of transistor 6 is 1, then the current density at the emitter of transistor 4 is set to double.
したがって、このような電子ガバナでは、モータ２４の
内部インピーダンスに対応して設けた抵抗２６にモータ
２４の駆動電流に対応する基準電流が流れ、この基準電
流によって抵抗２６に発生した電圧降下と電圧−６ＪＡ
１０の基準電圧Ｖ ｒｏｔとを加算して得られる電圧が
誤差増幅器８の反転入力端子（−）に加えられるととも
に、その非反転入力端子（＋）には、トランジスタ４の
コレクタ側からモータ２４の端子電圧が加えられており
、両者の偏差が誤差増幅器８で検出される。この誤差増
幅器８の出力は、トランジスタ４．６のペース入力とな
っており、偏差に応じてトランジスタ６に流れる基準電
流が制御されるとともに、トランジスタ４に流れる駆動
電流が制御され、トランジスタ４．６に流れる電流の平
衡が採られ、モータ２４の回転数が調整される。Therefore, in such an electronic governor, a reference current corresponding to the drive current of the motor 24 flows through the resistor 26 provided corresponding to the internal impedance of the motor 24, and the voltage drop generated across the resistor 26 due to this reference current and the voltage - 6JA
A voltage obtained by adding the reference voltage V rot of 10 is applied to the inverting input terminal (-) of the error amplifier 8, and a voltage of the motor 24 from the collector side of the transistor 4 is applied to the non-inverting input terminal (+) of the error amplifier 8. A terminal voltage is applied, and the deviation between the two is detected by an error amplifier 8. The output of this error amplifier 8 serves as a pace input for the transistor 4.6, and the reference current flowing through the transistor 6 is controlled according to the deviation, and the drive current flowing through the transistor 4 is controlled. The current flowing through the motor 24 is balanced, and the rotational speed of the motor 24 is adjusted.
ところで、モータ２４の内部インピーダンスをＲ１、ト
ルク制御抵抗２６の抵抗値をＲｔとすると、Ｒ，、ＲＴ
およびＫは、
ＲＩＩ＝ＲＴ／Ｋ ・・・（１）の関係に
設定されている。By the way, if the internal impedance of the motor 24 is R1 and the resistance value of the torque control resistor 26 is Rt, then R,, RT
and K are set to the relationship RII=RT/K (1).
そこで、モータ２４の回転数をＮ、速度制御抵抗２８の
抵抗値をＲ３、制御端子１８から電圧源１０側に流れる
電流をｉｇとすると、モータ２４の回転数Ｎは、
Ｎｃｒ：ｖ、、、 （１＋ （Ｒｔ ／Ｒ３）（１十
１／Ｋ））＋ＲＴ 、 ｉ、 ・・・（２）の関係
がある。Therefore, if the rotation speed of the motor 24 is N, the resistance value of the speed control resistor 28 is R3, and the current flowing from the control terminal 18 to the voltage source 10 side is ig, then the rotation speed N of the motor 24 is Ncr:v. (1+(Rt/R3)(111/K))+RT, i, ...(2) relationship exists.
したがって、モータ２４の回転数Ｎを変えるには、主制
御部２のモータ端子１６と制御端子１８との間に接続さ
れた速度制御抵抗２８の抵抗値を変化させればよく、抵
抗２８を可変抵抗や、異なる抵抗値を持つ複数の抵抗器
をスイッチで選択的に切り換えることにより実現される
。Therefore, in order to change the rotation speed N of the motor 24, it is only necessary to change the resistance value of the speed control resistor 28 connected between the motor terminal 16 and the control terminal 18 of the main control section 2, and the resistance value of the speed control resistor 28 can be changed. This is achieved by selectively switching a resistor or multiple resistors with different resistance values using a switch.
このような電子ガバナは、たとえば、２個の磁気テープ
を取付けて再生、録音が可能ないわゆるダブルカセット
テープレコーダなどに用いられている。このようなテー
プレコーダにおいて、倍速度によって一方の磁気テープ
の再生音を他方の磁気テープに録音する場合、その録音
速度を抵抗器の切換えによって実現しようとすると、Ｉ
Ｃに外付けされる複数の抵抗器とともに、それを切り換
えるためのスイッチも必要となるので、外付は部品が多
くなり、回路構成が複雑化する欠点がある。Such an electronic governor is used, for example, in a so-called double cassette tape recorder, which is capable of playing back and recording data by attaching two magnetic tapes. In such a tape recorder, when the playback sound of one magnetic tape is recorded onto the other magnetic tape at double speed, if the recording speed is to be achieved by switching the resistor, the I.
In addition to the plurality of resistors externally attached to C, a switch for switching them is also required, so external attachment has the disadvantage of increasing the number of parts and complicating the circuit configuration.
そこで、この発明は、このような外部回路により与えら
れる切換信号に応じてＩＣ内部で速度切換えを実現した
電子ガバナを提供することを目的とする。Therefore, an object of the present invention is to provide an electronic governor that realizes speed switching within an IC in response to a switching signal provided by such an external circuit.
この発明を実施例に対応する第１図を参照して説明する
と、この発明の電子ガバナは、モータ２４の内部インピ
ーダンスに対応して設けた抵抗２６にモータ２４の駆動
電流に対応する基準電流を流して電圧降下を生じさせ、
この電圧降下と基準電圧Ｖ ｒａｆとの合成電圧値と、
モータ２４の端子電圧との偏差に応じて前記駆動電流を
制御してモータ２４の回転数Ｎを調整する電子ガバナに
おいて、基準電圧■１．．を複数の異なる値に設定する
基準電圧源３０１．３０２ ・・・３０．と、この基準
電圧源３０．．３０□ ・・・３０．で発生させた基準
電圧Ｖ ｒ、ｆ１％ Ｖｒｅｆ２・・’ＶｒａｆＮを切
り換えるスイッチ回路３４とから構成し、スイッチ回路
３４の基準電圧Ｖ、、、ｆいＶ ｒｅｆｔ・・・Ｖ ｒ
ｍｆＨの切換えによってモータ２４の回転数Ｎが切り換
えられるようにしたものである。The present invention will be described with reference to FIG. 1 corresponding to an embodiment. The electronic governor of the present invention applies a reference current corresponding to the drive current of the motor 24 to a resistor 26 provided corresponding to the internal impedance of the motor 24. to cause a voltage drop,
A composite voltage value of this voltage drop and the reference voltage V raf,
In the electronic governor that adjusts the rotational speed N of the motor 24 by controlling the drive current according to the deviation from the terminal voltage of the motor 24, the reference voltage (1). ．． Reference voltage sources 301,302...30. and this reference voltage source 30. ．． 30□ ...30. It consists of a switch circuit 34 that switches the reference voltages Vr, f1% Vref2...'VrafN generated in
The rotation speed N of the motor 24 can be changed by changing mfH.
式（２）から明らかなように、モータ２４の回転数Ｎは
、基準電圧Ｖ ｒａｆＯ値に比例しているから、Ｎ Ｃ
ｃＶ ｒｏｔ ” ’ （３１その値を
変化させると、その電圧値Ｖ ｒａｆに応じた回転数Ｎ
が得られる。As is clear from equation (2), the rotation speed N of the motor 24 is proportional to the reference voltage V rafO value, so N C
cV rot "' (31 When the value is changed, the rotation speed N according to the voltage value V raf
is obtained.
したがって、基準電圧Ｖ ｒａｔを複数の電圧源３０、
．３０２ ・・・３０．によって基準電圧Ｖ ｒａｆｔ
ｓ Ｖｒａｆ□・・・ＶｒｌｌｆＮ（たとえば、Ｖ ｒ
ａｆｌ＜Ｖｒａｒｚ〈・・・〈■、。ｆＮに設定）を設
定し、これを外部の切換信号でスイッチ回路３４を切り
換え、基準電圧Ｖ ｒ＠Ｌｌｚ ＶｒａＬ２・” Ｖｃ
＊ｔＮを選択することにより、回転数Ｎ （＝Ｎ＋ 、
Ｎｔ ・・・Ｎｓ （Ｎ＋ ＜Ｎｔ 〈・・・＜ＮＮ
））が得られる。Therefore, the reference voltage V rat is set to a plurality of voltage sources 30,
．． 302...30. by the reference voltage V raft
s Vraf□...VrllfN (for example, V r
afl<Vrarz〈...〈■,. fN), switch the switch circuit 34 using an external switching signal, and set the reference voltage V r@Llz VraL2・”Vc
*By selecting tN, the rotation speed N (=N+,
Nt...Ns (N+ <Nt <...<NN
)) is obtained.
そして、スイッチ回路３４および基準電圧源３０、．３
０□ ・・・３０．は、ＩＣからなる主制御部２に設置
されるから、ＩＣ内部で回転数の切換えが実現され、速
度制御抵抗２８は単一の固定抵抗を用いることができ、
複数の抵抗器やスイッチを伴う外部切換回路が不要にな
る。A switch circuit 34 and a reference voltage source 30, . 3
0□ ...30. is installed in the main control unit 2 consisting of an IC, so switching of the rotation speed is realized inside the IC, and a single fixed resistance can be used as the speed control resistor 28.
Eliminates the need for external switching circuits with multiple resistors and switches.
以下、この発明の実施例を図面を参照して詳細に説明す
る。Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図はこの発明の電子ガバナの実施例を示している。FIG. 1 shows an embodiment of the electronic governor of the present invention.
第１図に示すように、ＩＣで構成された主制御部２の内
部に異なる基準電圧Ｖ ｒａｆｌｓ Ｖｒａｆ！・・・
ＶｒｌｌｆＮを個別に発生する複数の基準電圧源３０、
．３０！ ・・・３０．とともに、制御入力端子３２に
加えられる切換制御信号Ｓｃに応じて各基準電圧Ｖ、、
ｏｆｌ、Ｖ ｒｅｆｇ・・’ＶｒｅｆＮを選択的に切り
換えるスイッチ回路３４が設置されている。As shown in FIG. 1, different reference voltages V rafls Vraf! ...
a plurality of reference voltage sources 30 that individually generate VrllfN;
．． 30! ...30. At the same time, each reference voltage V, , depending on the switching control signal Sc applied to the control input terminal 32
A switch circuit 34 is installed to selectively switch ofl, V refg . . . 'VrefN.
スイッチ回路３４は、たとえば基準電圧源３０Ｉ、３０
□ ・・・３ＯＮごとにＩＣ上のスイッチング素子とし
てのトランジスタを設置したものであり、そのトランジ
スタの動作を擬似接点３６で示すように基準電圧源３０
．．３０□ ・・・３０８を選択的に切り換えるように
構成されている。The switch circuit 34 includes, for example, reference voltage sources 30I, 30
□ ...A transistor is installed as a switching element on the IC every 3 ONs, and the operation of the transistor is shown by the pseudo contact 36, which is connected to the reference voltage source 30.
．． ．． 30□...308 are configured to be selectively switched.
また、各基準電圧源３０．．３０． ・・・３０、は
、ＩＣ上のバンドギャップ定電圧発生回路で構成され、
たとえば、基準電圧源３０１が発生する基準電圧■、、
、ｆｌを約１．２ｖに設定し、基準電圧源３０□、３０
．・・・３０．が発生する基準電圧をＶｒ−ｅｔｃ ＝
２ Ｖ、−ｒ＋ ＝ ２．４Ｖ ） ・・・Ｖｒ＊ｒ、
４（＝ Ｎ−Ｖｒ＊ｒ＋ ＝ １．２Ｘ Ｎ ）Ｌ設定
する。In addition, each reference voltage source 30. ．． 30. ...30 is composed of a bandgap constant voltage generation circuit on an IC,
For example, the reference voltage generated by the reference voltage source 301 is
, fl is set to about 1.2v, and the reference voltage sources 30□, 30
．． ...30. The reference voltage generated by Vr-etc =
2 V, -r+ = 2.4V) ...Vr*r,
Set 4(=N-Vr*r+=1.2XN)L.
このように構成すれば、制御入力端子３２に加えられる
切換制御信号Ｓｃのレベルに応じてスイッチ回路３４の
切換えが行われ、基準電圧源３０、．３０□ ・・・３
０．の一つが選択され、抵抗２６の電圧降下に対して基
準電圧Ｖ ｒ ｏ ｆ Ｉ、■、。ｆ２・・・■、、、
ｆＮの中の一つの基準電圧値が設定され、その合成値が
誤差増幅器８の反転入力端子（＝）に加えられる。With this configuration, switching of the switch circuit 34 is performed according to the level of the switching control signal Sc applied to the control input terminal 32, and the reference voltage sources 30, . 30□ ...3
0. One of the reference voltages V r o f I, ■, is selected for the voltage drop across the resistor 26. f2...■,,,
One reference voltage value in fN is set, and its combined value is applied to the inverting input terminal (=) of the error amplifier 8.
したがって、式（２）で示すように回転数Ｎは基準電圧
Ｖ４．に比例するから、選択された基準電圧Ｖ ｒ＊ｆ
を加減すると、その基準電圧Ｖ ｒｌｌｆｌ、ｖ、、、
、 ・ −・ｖ、、、Ｎ（ｖ、、、、＜ ｖ、、、２＜
−−・＜Ｖ−−ｒ、４） 定比例すル回転数Ｎ１、Ｎ
２ ・・・ＮＮ（Ｎ、〈Ｎｔく・・・＜ＮＨ）が得られ
る。Therefore, as shown in equation (2), the rotation speed N is the reference voltage V4. Since it is proportional to the selected reference voltage V r*f
By adjusting or subtracting the reference voltage V rllfl,v, ,
, ・−・v,,,N(v,,,<v,,,2<
--・<V--r, 4) Constant proportional wheel rotation speed N1, N
2...NN (N, <Nt...<NH) is obtained.
以上説明したように、この発明によれば、誤差増幅器に
設定する基準電圧を切り換えるので、たとえば、ＩＣで
構成される主制御部の内部回路によって、外部スイッチ
などを用いることなく、非常に簡単な構成により回転数
の切換えを行うことができる。As explained above, according to the present invention, since the reference voltage set in the error amplifier is switched, the internal circuit of the main control section composed of an IC can be used, for example, without using an external switch or the like. The rotation speed can be changed depending on the configuration.
第１図はこの発明の電子ガバナの実施例を示す回路図、
第２図は従来の電子ガバナを示す回路図である。
２・・・主制御部、２４・・・モータ、２６・・・抵抗
、３０．．３０２ ・・・３０、・・・基準電圧源、
３４・・・スイッチ回路。
第１図
第２図FIG. 1 is a circuit diagram showing an embodiment of the electronic governor of the present invention;
FIG. 2 is a circuit diagram showing a conventional electronic governor. 2... Main control unit, 24... Motor, 26... Resistor, 30. ．． 302...30,...reference voltage source,
34...Switch circuit. Figure 1 Figure 2
Claims (1)
記モータの駆動電流に対応する基準電流を流して電圧降
下を生じさせ、この電圧降下と基準電圧との合成電圧値
と、前記モータの端子電圧との偏差に応じて前記駆動電
流を制御し、モータの回転速度を調整する電子ガバナに
おいて、前記基準電圧の異なる電圧値に設定した複数の
基準電圧源と、各基準電圧源を切り換えるスイッチ回路
とから構成し、スイッチ回路の基準電圧の切換えにより
前記モータの回転速度を切り換えることを特徴とする電
子ガバナ。A reference current corresponding to the driving current of the motor is caused to flow through a resistor provided corresponding to the internal impedance of the motor to cause a voltage drop, and a composite voltage value of this voltage drop and the reference voltage is calculated as the terminal voltage of the motor. An electronic governor that controls the drive current and adjusts the rotational speed of the motor according to the deviation of the reference voltage includes a plurality of reference voltage sources set to different voltage values of the reference voltage, and a switch circuit that switches between the reference voltage sources. An electronic governor characterized in that the rotational speed of the motor is switched by switching a reference voltage of a switch circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60111884A JPS61273191A (en) | 1985-05-24 | 1985-05-24 | Electronic governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60111884A JPS61273191A (en) | 1985-05-24 | 1985-05-24 | Electronic governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61273191A true JPS61273191A (en) | 1986-12-03 |
Family
ID=14572562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60111884A Pending JPS61273191A (en) | 1985-05-24 | 1985-05-24 | Electronic governor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61273191A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63190586A (en) * | 1987-01-29 | 1988-08-08 | Rohm Co Ltd | Electronic governor |
| JPH0595198U (en) * | 1992-05-27 | 1993-12-24 | 株式会社三協精機製作所 | DC motor speed controller |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156282A (en) * | 1976-06-23 | 1977-12-26 | Hitachi Ltd | Servo motor drive unit |
| JPS58224585A (en) * | 1982-06-24 | 1983-12-26 | Matsushita Electric Ind Co Ltd | Speed controller for dc motor |
-
1985
- 1985-05-24 JP JP60111884A patent/JPS61273191A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156282A (en) * | 1976-06-23 | 1977-12-26 | Hitachi Ltd | Servo motor drive unit |
| JPS58224585A (en) * | 1982-06-24 | 1983-12-26 | Matsushita Electric Ind Co Ltd | Speed controller for dc motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63190586A (en) * | 1987-01-29 | 1988-08-08 | Rohm Co Ltd | Electronic governor |
| JPH0595198U (en) * | 1992-05-27 | 1993-12-24 | 株式会社三協精機製作所 | DC motor speed controller |
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