JPS61167384A - Dc motor control circuit - Google Patents

Dc motor control circuit

Info

Publication number
JPS61167384A
JPS61167384A JP60008138A JP813885A JPS61167384A JP S61167384 A JPS61167384 A JP S61167384A JP 60008138 A JP60008138 A JP 60008138A JP 813885 A JP813885 A JP 813885A JP S61167384 A JPS61167384 A JP S61167384A
Authority
JP
Japan
Prior art keywords
terminal
voltage
motor
input
integrated circuit
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
JP60008138A
Other languages
Japanese (ja)
Inventor
Takeshi Jinno
神野　毅
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP60008138A priority Critical patent/JPS61167384A/en
Publication of JPS61167384A publication Critical patent/JPS61167384A/en
Pending legal-status Critical Current

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

PURPOSE:To stabilize the operation of the first and second control circuits by connecting the power source input terminals of the first and second circuits with a power source terminal and connecting the earth terminal of the both circuits with a common earth terminal. CONSTITUTION:A governor integrated circuit 1 and a power source input terminal (8'), (7') of a rotation switching integrated circuit 5 are connected with a power source input terminal 7, the earth terminals (2), (1') of the both circuits 1, 5 are connected with a common earth terminal 6. The output voltage of the generating terminal (3) of the circuit 1 and a reference voltage are compared by a differential amplifier 17, and the output of the amplifier 17 is supplied to a constant-voltage terminal (4'). Thus, the voltage applied to the motor 4 becomes constant to cause the motor 4 to rotate constantly by a governor- control.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、テープレコーダなどに用いられる直流モー
タの回転速度を制御する直流モータ制御回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a DC motor control circuit that controls the rotational speed of a DC motor used in a tape recorder or the like.

〔従来の技術〕[Conventional technology]

従来、電子的手法により動作をフルロシックコントロー
ルするたとえば車載用テープレコーダは、直流モータを
有するとともに、該モータの回転速度を制御するために
、いわゆるモータガバナ用集積回路を内蔵している。Conventionally, for example, a car-mounted tape recorder whose operation is fully controlled electronically has a DC motor and a built-in so-called motor governor integrated circuit to control the rotational speed of the motor.

そして前記集積回路の１例である東京三洋電機株式会社
製の型番ＬＡ５５１２の集積回路を用いるとと能を備え
たこの種車載用のテープレコーダの直流モータ制御回路
は、第２図に示すように構成されている。Using an integrated circuit with the model number LA5512 manufactured by Tokyo Sanyo Electric Co., Ltd., which is an example of the integrated circuit, a DC motor control circuit of this type of automotive tape recorder is constructed as shown in FIG. It is configured.

ところで第２図において、（１）は前記型番ＬＡ５５１
２の集積回路であシ、電源入力端子■、アース端子■、
基準電圧発生端子■、制御端子■を有する。By the way, in Fig. 2, (1) is the model number LA551.
2 integrated circuit, power input terminal ■, ground terminal ■,
It has a reference voltage generation terminal (■) and a control terminal (■).

Ｔ２）　、　（３）は電源入力端子■と基準端子■との
間に直列に設けられた基準電圧設定用の抵抗、可変抵抗
であシ、可変抵抗（３）の摺動片が制御端子■に接続さ
れている。T2) and (3) are the reference voltage setting resistors and variable resistors installed in series between the power input terminal ■ and the reference terminal ■, and the sliding piece of the variable resistor (3) is the control terminal ■. It is connected to the.

（４）は一端が電源入力端子■に接続された直流モータ
であシ、他端が発生端子■に接続されている。(4) is a DC motor whose one end is connected to the power supply input terminal (2), and the other end is connected to the generation terminal (2).

（５）は型番ＢＡ６２０９の集積回路であシ、共通アー
ス端子（６）に接続されたアース端子づと、集積回路（
１）の電源入力端子■、アース端子■にそれぞれ接続さ
れた電源側、アース側の出力端子ご、ｄと、１対の出カ
ドライブ端子■′、ｏ′、定電圧端子０４’、１対の制
御入力端子■′、■′、電源端子（７）に接続された電
源入力端子コ、限流用の抵抗（８）を介して電源入力端
子ごに接続された供給電源端子ｌを備えている。(5) is an integrated circuit with model number BA6209, and the integrated circuit (
1) Power supply side and ground side output terminals connected to the power input terminal ■ and earth terminal ■, respectively, d, one pair of output drive terminals ■', o', and one pair of constant voltage terminals 04'. control input terminals ■', ■', a power input terminal connected to the power supply terminal (7), and a supply power terminal l connected to each power input terminal via a current-limiting resistor (8). .

（９）は集積回路（５）の面出カドライブ端子コイ間に
設けられた充放電用のコンデンサ、αＯは７ノードが共
通アース端子（６）に接続された定電圧用のツェナダイ
オードであり、カソードが集積回路（５）の定電圧端子
了に接続されている。(9) is a charging/discharging capacitor installed between the surface drive terminals of the integrated circuit (5), and αO is a constant voltage Zener diode whose 7 nodes are connected to the common ground terminal (6). , the cathode is connected to the constant voltage terminal of the integrated circuit (5).

αυ、ａ２は両制御入力端子■′、■′にそれぞれ接続
された１対の制御出力端子であり、ハイレベルの回転方
向制御信号を択一的に出力する。α場は集積回路（５）
の面出力端子ｄ、ｄ間に設けられたフィルタ用のコンデ
ンサ、α→はアノードが集積回路（５）の出力端子［相
］′に接続されたバイパス用のダイオードであシ、カソ
ードが限流用の抵抗αＱを介してモータ（４）の他端に
接続されている。αυ and a2 are a pair of control output terminals connected to both control input terminals ■' and ■', respectively, and selectively output a high-level rotational direction control signal. α field is an integrated circuit (5)
A filter capacitor is installed between the plane output terminals d and d, and α→ is a bypass diode whose anode is connected to the output terminal [phase]' of the integrated circuit (5), and whose cathode is for current limiting. is connected to the other end of the motor (4) via a resistor αQ.

そして集積回路（１）は第３図に示すように構成され、
入力端子■とアース端子■との間の分割電圧が電圧比較
用の演算増幅器（ＯＰ）の一方の入力端子に入力される
とともに、増幅器（ＯＰ）の他方の入力端子に制御端子
■の電圧が入力される。The integrated circuit (1) is configured as shown in FIG.
The divided voltage between the input terminal ■ and the ground terminal ■ is input to one input terminal of an operational amplifier (OP) for voltage comparison, and the voltage of the control terminal ■ is input to the other input terminal of the amplifier (OP). is input.

そして増幅器（ＯＰ）は両入力端子の電圧差にもとづい
て出力端子にベースが接続されたトランジスタ（Ｑｌ）
、（Ｑ２）のコレクタ、エミッタ間のインピーダンスを
可変する。The amplifier (OP) uses a transistor (Ql) whose base is connected to the output terminal based on the voltage difference between both input terminals.
, (Q2), the impedance between the collector and emitter is varied.

なお、トランジスタ（Ｑｌ）のコレクタは電源入力端子
■に接続され、トランジスタ（Ｑ２）のコレクタは基準
端子■に接続され、さらに、両トランジスタ（Ｑｌ）、
（Ｑ２）のモミツタは抵抗（Ｒ１）、（Ｒ２）をそれぞ
れ介してアース端子■に接続されている。Note that the collector of the transistor (Ql) is connected to the power input terminal ■, the collector of the transistor (Q2) is connected to the reference terminal ■, and both transistors (Ql),
The fir tree (Q2) is connected to the ground terminal (2) via resistors (R1) and (R2), respectively.

また、図中の−（ｖ）、（ｉ）は等価電圧、電流源を示
す。Further, -(v) and (i) in the figure indicate equivalent voltage and current sources.

さらに、集積回路（５）は第４図に示すように構成され
、制御入力端子ダにハイレベルの回転方向制御信号が入
力されたときは、バッファ（Ｂ１）の出力がハイレベル
になるとともにバッファ（Ｂ２）の出力がローレベルに
なシ、逆に、制御入力端子でにハイレベルの回転方向制
御信号が入力されたときは、バッファ（Ｂ２）の出力が
ハイレベルになるとともにバッファ（Ｂｌ　）の出力が
ローレベルになる。Furthermore, the integrated circuit (5) is configured as shown in FIG. When the output of the buffer (B2) is at a low level, and conversely, when a high level rotational direction control signal is input to the control input terminal, the output of the buffer (B2) becomes a high level and the buffer (Bl) output becomes low level.

そこで両制御入力端子■′、■′に回転方向制御信号が
入力されるときに、常にナンドゲ−１−（Ｇｌ）の出力
がハイレベルになってインバータ（Ｉ）の出力がローレ
ベルになる。Therefore, when the rotational direction control signal is input to both control input terminals ``2'' and ``2'', the output of the NAND game 1-(Gl) always becomes high level and the output of the inverter (I) becomes low level.

さらに、アントゲ−）　（Ｇ２）の出力は制御入力端子
■′に回転方向制御信号が入力されたときにハイレベル
になり、アントゲ−）　（Ｇ８）の出力は制御入力端子
イに回転方向制御信号が択一的に入力されたときにハイ
レベルになる。Furthermore, the output of the game (G2) becomes high level when the rotation direction control signal is input to the control input terminal A, and the output of the game (G8) becomes a high level when the rotation direction control signal is input to the control input terminal A. becomes high level when is input alternatively.

そして制御入力端子づに回転方向制御信号が入力された
ときは、トランジスタ（Ｑ３）がオン、トランジスタ（
Ｑ４）がオフに制御され、トランジスタ（Ｑ８）のオン
によりトランジスタ（Ｑ５）、（Ｑ６）がオンするトド
もに、トランジスタ（Ｑ４）のオフによりトランジスタ
（Ｑ７）、（Ｑ８）がオフし、出力端子ぞに、電源入力
端子ごの電圧と定電圧端子での電圧とで決まるハイレベ
ルの電圧が発生し、出力端子−はトランジスタ（Ｑ５）
を介してアース端子■′に接続される。When the rotation direction control signal is input to each control input terminal, the transistor (Q3) is turned on and the transistor (Q3) is turned on.
Q4) is controlled to be off, and when transistor (Q8) is turned on, transistors (Q5) and (Q6) are turned on, and when transistor (Q4) is turned off, transistors (Q7) and (Q8) are turned off, and the output is A high level voltage determined by the voltage at each power input terminal and the voltage at the constant voltage terminal is generated at each terminal, and the output terminal - is a transistor (Q5).
Connected to ground terminal ■' via.

一方、制御入力端子イに回転方向制御信号が入力された
ときは、トランジスタ（Ｑ４）がオン、トランジスタ（
Ｑｌ）がオフに制御され、トランジスタ（Ｑ４）のオン
によりトランジスタ（Ｑ７）、（Ｑ８）がオンするとと
もに、トランジスタ（Ｑ３）のオフによりトランジスタ
（Ｑ５）、（Ｑ６）がオフし、出力端子びに、電源端子
ゲの電圧と定電圧端子びの電圧とで決まるハイレベルの
電圧が発生し、出力端子ゲはトランジスタ（Ｑ７）を介
してアース端子■′に接続される。On the other hand, when the rotation direction control signal is input to the control input terminal A, the transistor (Q4) is turned on and the transistor (
Ql) is controlled to be off, transistors (Q7) and (Q8) are turned on by turning on transistor (Q4), and transistors (Q5) and (Q6) are turned off by turning off transistor (Q3), and each output terminal is turned off. A high level voltage determined by the voltage at the power supply terminal G and the voltage at the constant voltage terminal is generated, and the output terminal G is connected to the ground terminal 2' via the transistor (Q7).

なお、第４図の（Ｒ３）、（Ｒ４）は集積回路（５）の
内部抵抗であシ、（ＤＩ）、（Ｄ２）は集積回路（５）
の内部ダイオードである。Note that (R3) and (R4) in FIG. 4 are internal resistances of the integrated circuit (5), and (DI) and (D2) are the internal resistances of the integrated circuit (5).
is an internal diode.

また、（１）′、（ケは集積回路（５）の内部の等側型
流源をそれぞれ示す。Further, (1)' and (ke) respectively indicate equilateral type flow sources inside the integrated circuit (5).

そしてモータ（４）は、入力端子■′に回転方向制御信
号が入力されて入力端子■′が／％イレベル、入力端子
■′がローレベルになったときに正回転し、入力端子■
′に回転方向制御信号が入力されて入力端子■′がロー
レベル、入力端子■′がハイレベ〜になったときに逆回
転するように設定され、入力端子■′に回転方向制御信
号が入力されると、出力端子■′の電流がモータ（４）
１発生端子■、アース端子■を介して出力端子［相］′
、トランジスタ（Ｑ５）、アース端子■′に流れ、モー
タ（４）が正回転し、このときモータ（４）の回転変動
による逆起電力は制御端子■に帰還され、集積回路（１
）の動作により発生端子■の基準電圧が変化し、モータ
（４）に供給されるモータ電流が制御されてモータ（４
）の回転速度が一定にガバナ制御される。The motor (4) rotates forward when the rotation direction control signal is input to the input terminal ■' and the input terminal ■' becomes /% high level and the input terminal ■' becomes low level, and the motor (4) rotates forward when the input terminal ■' becomes /% high level and the input terminal ■' becomes low level.
When a rotation direction control signal is input to input terminal ■' and input terminal ■' becomes low level and input terminal ■' becomes high level ~, the rotation direction control signal is input to input terminal ■'. Then, the current at the output terminal ■' is applied to the motor (4)
Output terminal [phase]' via 1 generation terminal ■ and ground terminal ■
, the transistor (Q5), and the ground terminal ■', causing the motor (4) to rotate forward. At this time, the back electromotive force due to rotation fluctuations of the motor (4) is fed back to the control terminal ■, and the integrated circuit (1
), the reference voltage at the generation terminal ■ changes, and the motor current supplied to the motor (4) is controlled.
) is controlled by a governor to keep it constant.

一方、入力端子■′に回転方向制御信号が入力されると
、出力端子［相］′の電流がダイオードα荀、抵抗αう
、モータ（４）を介して出力端子■′、トランジスタ（
Ｑ７）、アース端子■′に流れ、モータ（４）が逆回転
する。On the other hand, when the rotation direction control signal is input to the input terminal ■', the current at the output terminal [phase]' passes through the diode α, the resistor α, the motor (4), the output terminal ■', and the transistor (
Q7), flows to the ground terminal ■', and the motor (4) rotates in the reverse direction.

しかし、モータ（４）が逆回転するときは、電源入力端
子■がアース電圧に、アース端子■が電源電圧になるた
め、集積回路（１）の動作することがなく、モータ（４
）の回転変動は制御されず、モータ（４）がいわゆるガ
バナレスで動作して電源変動などによりモータ（４）の
回転速度が変化し、たとえばモータ（４）の逆回転によ
りテープを巻き戻し再生して自動選曲を行なう場合は、
動作が不安定になって誤動作する欠点があり、とくに前
記車載用テープレコーダなどのポータプル機器の場合は
、電源電圧の変動によりモータの回転速度が著しく変化
するため、ガバナレスでモータを回転することは不可能
であシ、第２図の直流モータ制御回路を採用した場合に
は、誤動作が生じる。However, when the motor (4) rotates in reverse, the power input terminal ■ becomes the ground voltage and the ground terminal ■ becomes the power supply voltage, so the integrated circuit (1) does not operate and the motor (4)
) is not controlled, and the motor (4) operates in a so-called governor-less manner, and the rotation speed of the motor (4) changes due to fluctuations in the power supply, for example, when the tape is rewound and played back by rotating the motor (4) in the opposite direction. If you want to select songs automatically,
There is a drawback that operation becomes unstable and malfunctions, and especially in the case of portable devices such as the above-mentioned car tape recorder, the rotation speed of the motor changes significantly due to fluctuations in the power supply voltage, so it is not possible to rotate the motor without a governor. If this is not possible, and if the DC motor control circuit shown in FIG. 2 is adopted, malfunctions will occur.

そして特願昭５８−１１２４７０号の出願には、第５図
に示すように構成し、ロジックコントロール方式により
モータの回転方向を切シ換えるとともに、モータの正回
転時だけでなく逆回転時にもモータの回転速度の変動を
防止し、電源変動などに対してモータを安定に動作させ
ることが記載されている。The application for Japanese Patent Application No. 58-112470 describes a configuration as shown in Fig. 5, in which the direction of rotation of the motor can be switched by a logic control method, and the motor can be operated not only when the motor rotates forwardly but also when it rotates backwards. It is described that the motor can be prevented from changing its rotational speed and operate stably even in the face of power supply fluctuations.

ところで第５図において、第２図ないし第４図と同一記
号は同一もしくは相当するものを示し、異なる点はつぎ
の点である。By the way, in FIG. 5, the same symbols as those in FIGS. 2 to 4 indicate the same or equivalent parts, and the differences are as follows.

すなわち、集積回路（１）の電源入力端子■を電源端子
（７）に接続するとともにアース端子■をアース端子（
６）を介してアースし、また、集積回路（５）の供給電
源端子子を抵抗（２）に接続するとともに、アース端子
■′を集積回路（１）の発生端子■に接続し、さらに、
面出力端子ケ、σ間にモータ（４）を設けるとともに、
電源入力端子■、アース端子■と面出力端子ご、ガとの
間および、電源端子■、アース端子■とモータ（４）の
両端との間をそれぞれ切断開放し、かつ、第２図のツェ
ナダイオードＧＯ，ダイオードα４）、抵抗０５を省い
た点である。That is, the power input terminal ■ of the integrated circuit (1) is connected to the power supply terminal (7), and the ground terminal ■ is connected to the ground terminal (
6), and also connect the power supply terminal of the integrated circuit (5) to the resistor (2), and connect the ground terminal ■' to the generation terminal ■ of the integrated circuit (1), and further,
In addition to installing a motor (4) between the surface output terminal and σ,
Cut and open the connections between the power input terminal ■, earth terminal ■ and the surface output terminal, and between the power supply terminal ■, earth terminal ■ and both ends of the motor (4), and connect the zener shown in Figure 2. This is because the diode GO, diode α4), and resistor 05 are omitted.

そして集積回路（１）は電源入力端子■に電源電圧が印
加されて発生端子■に基準電圧が発生する。In the integrated circuit (1), a power supply voltage is applied to the power supply input terminal (2), and a reference voltage is generated at the generation terminal (2).

一方、集積回路（５）はアース端子づが集積回路（１）
の発生端子■に接続されているため、集積回路（５）の
アース電圧がモータ（４）の回転方向に無関係に前記基
準電圧により設定される。On the other hand, the integrated circuit (5) has a ground terminal.
The ground voltage of the integrated circuit (5) is set by the reference voltage regardless of the rotational direction of the motor (4).

そして制御入力端子■′に回転方向制御信号が入力され
ると、第２図の場合と同様に集積回路（５）のトランジ
スタ（Ｑ５）、（Ｑ６）がオンし、供給電源端子■′か
ら一方の出力端子■′、モータ（４）、他方の出力端子
［相］′を介してアース端子■′への一方の電路が形成
され、該一方の電路の電流によりモータ（４）が正回転
し、このとき、アース端子■′の電圧すなわちアース電
圧が発生端子■の基準電圧により可変制御される。When the rotation direction control signal is input to the control input terminal ■', the transistors (Q5) and (Q6) of the integrated circuit (5) are turned on, as in the case of Fig. 2, and one side is connected to the power supply terminal ■'. One electric path to the ground terminal ■' is formed through the output terminal ■', the motor (4), and the other output terminal [phase]', and the current in this one electric path causes the motor (4) to rotate forward. , At this time, the voltage at the ground terminal (2), that is, the ground voltage, is variably controlled by the reference voltage at the generation terminal (2).

また、集積回路（１）の制御端子■には集積回路（５）
の供＃ｔ＊端子■′を介してモータ（４）の逆起電力が
帰還され、前記制御端子■の電圧変動にもとづく集積回
路（１）の動作により、モータ（４）の回転速度が低下
したときには前記基準電圧が低下し、逆にモ−タ（４）
の回転速度が上昇すると前記基準電圧が上昇し、電源電
圧などが変動してもモータ（４）の回転速度が一定にガ
バナ制御される。In addition, the integrated circuit (5) is connected to the control terminal (■) of the integrated circuit (1).
The back electromotive force of the motor (4) is fed back through the supply #t* terminal ■', and the rotational speed of the motor (4) is reduced by the operation of the integrated circuit (1) based on the voltage fluctuation of the control terminal ■. When this occurs, the reference voltage decreases, and conversely, the motor (4)
When the rotational speed of the motor (4) increases, the reference voltage increases, and the rotational speed of the motor (4) is controlled by the governor to be constant even if the power supply voltage fluctuates.

つぎに、制御入力端子びに回転制御信号が入力されると
、集積回路（５）のトランジスタ（Ｑ７）、（Ｑ８）が
オンし、供給電源端子びから他方の出力端子［相］′。Next, when the rotation control signal is input to each control input terminal, the transistors (Q7) and (Q8) of the integrated circuit (5) are turned on, and the output terminal from the power supply terminal to the other output terminal [phase]' is turned on.

モータ（４）、一方の出力端子ごを介してアース端子づ
への他方の電路が形成され、該他方の電路の電流により
モータ（４）が逆回転し、このとき、前述の正回転時と
同様にアース端子づのアース電圧が集積回路（１）の発
生端子■の基準電圧により可変制御される。The other electric path is formed through one output terminal of the motor (4) to the ground terminal, and the current in the other electric path causes the motor (4) to rotate in the reverse direction. Similarly, the ground voltage at the ground terminal 2 is variably controlled by the reference voltage at the generation terminal 2 of the integrated circuit (1).

そして集積回路（１）が正回転時と同様に動作するため
、モータ（４）の逆回転時にもモータ（４）の回転速度
が一定にガバナ制御される。Since the integrated circuit (1) operates in the same manner as when the motor (4) rotates in the forward direction, the rotational speed of the motor (4) is controlled by the governor to be constant even when the motor (4) rotates in the reverse direction.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、第５図の場合はアース端子づがアース端子（６
）から浮き、かつ、集積回路（５）の電源端子づとアー
ス端子ごとの間の印加電圧が集積回路（１）の発生端子
■の基準電圧により設定されるため、集積回路（５）の
印加電圧が、電源端子（７）とアース端子（６）の間の
電源電圧より低くなるとともに、基準電圧の変動に応じ
て変化し、集積回路（５）の動作が不安定になる問題点
があるとともに、回転方向制御信号が入力されないとき
の制御入力端子コ、■′のローレベルの設定が困難にな
る問題点がある。However, in the case of Figure 5, the ground terminal is the ground terminal (6
), and since the applied voltage between each power supply terminal and ground terminal of the integrated circuit (5) is set by the reference voltage of the generation terminal (■) of the integrated circuit (1), the applied voltage of the integrated circuit (5) There is a problem in that the voltage becomes lower than the power supply voltage between the power supply terminal (7) and the earth terminal (6) and changes according to fluctuations in the reference voltage, making the operation of the integrated circuit (5) unstable. Additionally, there is a problem in that it is difficult to set the control input terminal (1) to a low level when no rotational direction control signal is input.

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

この発明は、電源入力端子、アース端子が電源端子、共
通アース端子にそれぞれ接続され、制御端子の電圧に比
例して基準電圧発生端子の電圧を可変する第１制御回路
部と、電源入力端子、アース端子が前記電源端子、前記
共通アース端子に接続されると′ともに直流モータに接
続された１対の出力端子の間の電圧極性が１対の制御入
力端子への回転方向制御信号の択一的な入力により可変
設定され、かつ定電圧端子の電圧に比例して供給電源端
子の電圧および前記面出力端子の間の電圧が変化すると
ともに前記供給電源端子の電圧を前記制御端子に印加す
る第２制御回路部と、前記基ｉ準電圧発生端子の電圧が
反転入力端子に印加されるとともに設定電圧が非反転入
力端子に印加され。The present invention includes a first control circuit section having a power input terminal and a ground terminal connected to a power supply terminal and a common ground terminal, respectively, and varying the voltage of a reference voltage generation terminal in proportion to the voltage of the control terminal; When the ground terminal is connected to the power supply terminal and the common ground terminal, the polarity of the voltage between the pair of output terminals connected to the DC motor selects the rotation direction control signal to the pair of control input terminals. The voltage of the supply power terminal and the voltage between the surface output terminal are varied in proportion to the voltage of the constant voltage terminal, and the voltage of the supply power terminal is applied to the control terminal. 2 control circuit section, the voltage of the reference i reference voltage generation terminal is applied to the inverting input terminal, and the set voltage is applied to the non-inverting input terminal.

前記基準電圧発生端子の電圧に反比例して変化する出力
電圧を前記定電圧端子に印加する差動増幅部とを備えた
ことを特徴とする直流モータ制御回路である。The DC motor control circuit is characterized in that it includes a differential amplifier section that applies an output voltage that changes in inverse proportion to the voltage of the reference voltage generation terminal to the constant voltage terminal.

〔作　用〕[For production]

そして第１．第２制御回路部の電源入力端子が電源端子
に接続されるとともに、面制御回路部のアース端子が共
通アース端子に接続されるため、面制御回路部に印加さ
れる電源電圧は、電源端子と共通アース端子間の電源電
圧に固定される。And the first. Since the power input terminal of the second control circuit section is connected to the power supply terminal, and the ground terminal of the surface control circuit section is connected to the common ground terminal, the power supply voltage applied to the surface control circuit section is connected to the power supply terminal. Fixed to the supply voltage across the common ground terminal.

さらに、直流モータの印加電圧の変動は差動増幅部の出
力電圧により安定化される。Furthermore, fluctuations in the voltage applied to the DC motor are stabilized by the output voltage of the differential amplifier.

〔実施例〕〔Example〕

つぎに、この発明を、その１実施例を示した第１図とと
もに詳細に説明する。Next, this invention will be explained in detail with reference to FIG. 1 showing one embodiment thereof.

第１図において、第５図と同一記号は同一もしくは相当
するものを示し、異なる点は集積回路（５）のアース端
子びが共通アース端子に接続されるとともに、集積回路
（１）の発生端子■に抵抗αＱを介して反転入力端子←
）が接続された差動増幅アンプαηを設け、アンプα力
の非反転入力端子（＋）に、抵抗（至）を介して、電源
端子（７）と共通アース端子（６）との間の電圧を抵抗
０す、翰により分割して形成した設定電圧を印加し、か
つ、アンプαηの出力端子を定電圧端子びに接続した点
である。In Fig. 1, the same symbols as in Fig. 5 indicate the same or equivalent parts, and the difference is that the ground terminal of the integrated circuit (5) is connected to the common ground terminal, and the generating terminal of the integrated circuit (1) is connected to the common ground terminal. ■Inverting input terminal via resistor αQ←
) is connected, and the non-inverting input terminal (+) of the amplifier α is connected to the power supply terminal (7) and the common ground terminal (6) via a resistor (to). A set voltage formed by dividing the voltage by a wire with a resistance of zero is applied, and the output terminal of the amplifier αη is connected to each constant voltage terminal.

なお、図中のｃ！Ｄはアンプαηの出力端子と反転入力
端子←）との間に設けられた増幅率設定用の抵抗を示す
。In addition, c! in the figure! D represents an amplification factor setting resistor provided between the output terminal of the amplifier αη and the inverting input terminal ←).

そして集積回路（１）　、　（５）　Ｋよシ第１．第２
制御回路部が形成されるとともに、アンプαηにより差
動増幅部が形成される。And integrated circuits (1), (5) K, 1st. Second
A control circuit section is formed, and a differential amplification section is formed by the amplifier αη.

ところで発生端子■の電圧は制御端子■の電圧に比例し
て変化する。By the way, the voltage at the generation terminal (2) changes in proportion to the voltage at the control terminal (2).

また、供給電源端子■′の電圧および出力端子■１σ間
の電圧は定電圧端子■′の電圧に比例して変化する。Further, the voltage at the supply power terminal ■' and the voltage between the output terminal ■1σ change in proportion to the voltage at the constant voltage terminal ■'.

そして画集積回路（１）　、　（５）の電源入力端子■
、■′が電源端子（７）に接続されるとともに、画集積
回路（１）　、　（５）のアース端子■、■′が共通ア
ース端子（６）に接続されているため、両集積回路（１
）　、　（５＞に印加される電源電圧は、電源端子（７
）と共通アース端子（６）との間の電源電圧に固定され
、この場合、第５図のように発生端子■の基準電圧の変
動によって両集積回路（１）　、　（５）　Ｋ印加され
る電源電圧が変化することはない。And the power input terminals of the image integrated circuits (1) and (5)■
, ■' are connected to the power supply terminal (7), and the ground terminals ■, ■' of the integrated circuits (1) and (5) are connected to the common ground terminal (6). 1
), (5> is the power supply voltage applied to the power supply terminal (7
) and the common ground terminal (6), and in this case, K is applied to both integrated circuits (1) and (5) by fluctuations in the reference voltage at the generating terminal (2) as shown in Figure 5. The power supply voltage never changes.

一方、定電圧端子ダにアンプα力の出力電圧が印加され
、アンプα力の出力電圧が発生端子■の基準電圧の変化
にしたがって変化するため、たとえばモータ（４）の回
転数が低くなって出力端子１．ｄ間の電圧および供給電
源端子ごの電圧が低下したときは、制御端子■に印加さ
れる電圧が低下して発生端子■の基準電圧が低くなると
、アンプαηの出力電圧が基準電圧の低下分だけ高くな
って出力端子■′、ｄ間の電圧および供給室一端子ダの
電圧が上昇制御され、これにより、モータ（４）の印加
電圧が定電圧化されてモータ（４）の回転が一定にガバ
ナ制御される。On the other hand, the output voltage of the amplifier α force is applied to the constant voltage terminal DA, and the output voltage of the amplifier α force changes according to the change in the reference voltage of the generation terminal ■, so for example, the rotation speed of the motor (4) becomes low. Output terminal 1. When the voltage across d and the voltage at each supply power terminal decrease, the voltage applied to the control terminal ■ decreases and the reference voltage at the source terminal ■ decreases, and the output voltage of the amplifier αη decreases by the amount of the decrease in the reference voltage. As a result, the voltage between the output terminals ■' and d and the voltage at the supply chamber terminal DA are controlled to increase, and as a result, the voltage applied to the motor (4) is made constant, and the rotation of the motor (4) is constant. is controlled by the governor.

また、モータ（４）の回転数が高くなって出力端子（１
，（ｍ間の電圧および供給電源端子ダの電圧が上昇した
ときは、前述と逆の動作によりモータ（４）の印加電圧
が定電圧化されてモータ（４）の回転が一定にガバナ制
御される。Also, the rotation speed of the motor (4) increases and the output terminal (1
. Ru.

したがって、第１図の場合は集積回路（１）　、　（５
）に印加される電源電圧が発生端子■の基準電圧の変動
によって変化せず、このため、集積回路（１）　、　（
５）の動作が安定する。Therefore, in the case of Figure 1, the integrated circuits (1), (5
The power supply voltage applied to the integrated circuit (1), (
5) The operation becomes stable.

また、集積回路（１）　、　（５）に印加される電源電
圧が、電源端子（７）と共通アース端子（６）との間の
電源電圧になって十分高くなるため、制御入力端子コ、
イのローレベルの設定も容易に行なえる。In addition, since the power supply voltage applied to the integrated circuits (1) and (5) becomes the power supply voltage between the power supply terminal (7) and the common ground terminal (6) and becomes sufficiently high, the control input terminal
You can also easily set the low level.

さらに、正回転時および逆回転時にモータ（４）の回転
速度が一定にガバナ制御されるため、自動選曲などを安
定かつ確実に行なえる。Furthermore, since the rotational speed of the motor (4) is controlled by a governor to be constant during forward rotation and reverse rotation, automatic music selection and the like can be performed stably and reliably.

なお、第１．第２制御回路部が集積回路（１）　、　（
５）以外の場合に適用できるのは勿論であり、また、車
載用テープレコーダ以外のポータプル機器に適用して非
常に有効であるのも勿論である。In addition, 1. The second control circuit section is an integrated circuit (1), (
It goes without saying that the present invention can be applied to cases other than 5), and is also very effective when applied to portable equipment other than in-vehicle tape recorders.

〔発明の効果〕 したがって、この発明の直流モータ制御回路によると、
第１．第２制御回路部の動作が安定し、直流モータ（４
）のガバナ制御を安定かつ確実に行なえるものである。[Effects of the Invention] Therefore, according to the DC motor control circuit of the present invention,
1st. The operation of the second control circuit becomes stable, and the DC motor (4
) can be stably and reliably controlled.

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

第１図はこの発明の直流モータ制御回路の１実施例のブ
ロック結線図、第２図および第５図はそれぞれ従来の直
流モータ制御回路のブロック結線図、第３図および第４
図はモータガバナ用集積回路９回転切換用集積回路それ
ぞれの内部等価回路図である。 （１）・・・モータガバナ用集積回路、（４）・・・直
流モータ、（５）・・・回転切換用集積回路、（６）・
・・共通アース端子、（７）・・・電源端子、■、ホ・
・・電源入力端子、■、ヒ・・・アース端子、■・・・
基準電圧発生端子、■・・・制御端子、■′、σ・・・
出力端子、ダ・・・定電圧端子、■′、ヒ・・・制御入
力端子、■′・・・供給電源端子。FIG. 1 is a block diagram of one embodiment of the DC motor control circuit of the present invention, FIGS. 2 and 5 are block diagrams of a conventional DC motor control circuit, and FIGS.
The figure is an internal equivalent circuit diagram of each of the nine rotation switching integrated circuits of the motor governor integrated circuit. (1)... Integrated circuit for motor governor, (4)... DC motor, (5)... Integrated circuit for rotation switching, (6)...
・・Common ground terminal, (7) ・・Power terminal, ■, E・
...Power input terminal, ■, Hi... Earth terminal, ■...
Reference voltage generation terminal, ■...control terminal, ■', σ...
Output terminal, D...constant voltage terminal, ■', H...control input terminal, ■'...supply power terminal.

Claims (1)

【特許請求の範囲】[Claims] （１）電源入力端子、アース端子が電源端子、共通アー
ス端子にそれぞれ接続され、制御端子の電圧に比例して
基準電圧発生端子の電圧を可変する第１制御回路部と、
電源入力端子、アース端子が前記電源端子、前記共通ア
ース端子に接続されるとともに直流モータに接続された
１対の出力端子の間の電圧極性が１対の制御入力端子へ
の回転方向制御信号の択一的な入力により可変設定され
、かつ定電圧端子の電圧に比例して供給電源端子の電圧
および前記両出力端子の間の電圧が変化するとともに前
記供給電源端子の電圧を前記制御端子に印加する第２制
御回路部と、前記基準電圧発生端子の電圧が反転入力端
子に印加されるとともに設定電圧が非反転入力端子に印
加され、前記基準電圧発生端子の電圧に反比例して変化
する出力電圧を前記定電圧端子に印加する差動増幅部と
を備えたことを特徴とする直流モータ制御回路。(1) a first control circuit unit whose power input terminal and ground terminal are connected to the power supply terminal and the common ground terminal, respectively, and which varies the voltage of the reference voltage generation terminal in proportion to the voltage of the control terminal;
The power supply input terminal and the ground terminal are connected to the power supply terminal and the common ground terminal, and the voltage polarity between the pair of output terminals connected to the DC motor is determined by the rotation direction control signal to the pair of control input terminals. The voltage of the supply power terminal and the voltage between the two output terminals are variably set by an alternative input, and are changed in proportion to the voltage of the constant voltage terminal, and the voltage of the supply power terminal is applied to the control terminal. a second control circuit unit that applies a voltage at the reference voltage generation terminal to an inverting input terminal, a set voltage to a non-inverting input terminal, and an output voltage that changes in inverse proportion to the voltage at the reference voltage generation terminal; and a differential amplifier section that applies the voltage to the constant voltage terminal.
JP60008138A 1985-01-19 1985-01-19 Dc motor control circuit Pending JPS61167384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60008138A JPS61167384A (en) 1985-01-19 1985-01-19 Dc motor control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60008138A JPS61167384A (en) 1985-01-19 1985-01-19 Dc motor control circuit

Publications (1)

Publication Number Publication Date
JPS61167384A true JPS61167384A (en) 1986-07-29

Family

ID=11684935

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60008138A Pending JPS61167384A (en) 1985-01-19 1985-01-19 Dc motor control circuit

Country Status (1)

Country Link
JP (1) JPS61167384A (en)

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