JPH0125316B2 - - Google Patents
Info
- Publication number
- JPH0125316B2 JPH0125316B2 JP57092449A JP9244982A JPH0125316B2 JP H0125316 B2 JPH0125316 B2 JP H0125316B2 JP 57092449 A JP57092449 A JP 57092449A JP 9244982 A JP9244982 A JP 9244982A JP H0125316 B2 JPH0125316 B2 JP H0125316B2
- Authority
- JP
- Japan
- Prior art keywords
- motor
- voltage
- value
- comparator
- reference voltage
- 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
Links
- 230000001133 acceleration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H02P7/2805—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 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 Electric Motors In General (AREA)
- Control Of Direct Current Motors (AREA)
Description
【発明の詳細な説明】
この発明は、モータの回転速度制御装置に関
し、デイジタルオーデイオデイスクプレーヤに好
適なものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motor rotation speed control device, and is suitable for a digital audio disc player.
一般に、デイジタルオーデイオデイスクプレー
ヤではデイスク上のピツクアツプの位置での線速
度が一定になるように制御される。このためには
デイスクに記録された基準信号を検出し、これと
モータの回転数を比較する必要がある。ところ
で、この基準信号は上記線速度が所定値近傍にな
らないと検出できず、モータの始動時には制御す
ることができない。 Generally, in a digital audio disc player, the linear velocity at the pick-up position on the disc is controlled to be constant. For this purpose, it is necessary to detect a reference signal recorded on the disk and compare it with the number of revolutions of the motor. By the way, this reference signal cannot be detected unless the linear velocity is close to a predetermined value, and cannot be controlled when the motor is started.
このため、モータの始動時には、上記所定値を
得るために、予定されたモータの最低速度より低
い第１の値とモータの最高速度より高い第２の値
とを定め、モータの速度を第１の値から第２の値
へ徐々に高め、また第２の値から第１の値へ徐々
に低めて繰返して上記線速度が得られるように、
自動的にサーチすることが考えられる。このサー
チ後は線速度が一定になるようにサーボ系を働か
せる。 Therefore, when starting the motor, in order to obtain the above-mentioned predetermined value, a first value lower than the planned minimum speed of the motor and a second value higher than the maximum speed of the motor are determined, and the speed of the motor is set to the first value. Gradually increase from the value to the second value and gradually decrease from the second value to the first value and repeat so that the above linear velocity is obtained.
It is possible to search automatically. After this search, the servo system is operated to keep the linear velocity constant.
このようにモータの回転速度を定められた第１
の値から第２の値へ、また第２の値から第１の値
へとなるように制御するものとして、モータの端
子間電圧をあるタイミングで正、逆（負）に切換
えることが考えられる。この場合には、モータの
立上り時間または立下り時間のバラツキにより反
復する回転速度を精度よく設定することができな
いという欠点がある。 In this way, the rotational speed of the motor is determined.
To control the voltage from the value to the second value and from the second value to the first value, it is possible to switch the voltage between the terminals of the motor between positive and reverse (negative) at a certain timing. . In this case, there is a drawback that the repeated rotational speed cannot be set accurately due to variations in the rise time or fall time of the motor.
この発明は上記サーチに好適なモータの速度制
御装置を提供するものであり、上記の欠点を除去
し、モータの回転速が定められた第１の値から第
２の値へ、また第２の値から第１の値へとなるよ
うに制御するものである。 The present invention provides a motor speed control device suitable for the above-mentioned search, which eliminates the above-mentioned drawbacks and changes the rotational speed of the motor from a predetermined first value to a second value. The value is controlled so that the value becomes the first value.
以下、この発明の一実施例を図について説明す
る。図において、１は直流モータ、２は電圧比較
器、RMはモータ１の巻線抵抗、EMはモータの誘
起電圧E1及びE2は第１及び第２の基準電圧であ
る。また、E1＜E2、R2＝KR1、R3＝KRM（但し、
Ｋは定数）なる関係をもたせてある。上記電圧比
較器２の出力は＋Ｅ、−Ｅの２値とする。 An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a DC motor, 2 is a voltage comparator, R M is a winding resistance of the motor 1, and E M is an induced voltage of the motor E 1 and E 2 are first and second reference voltages. Also, E 1 < E 2 , R 2 = KR 1 , R 3 = KRM (however,
K is a constant). The output of the voltage comparator 2 has two values, +E and -E.
いま、比較器２の出力が＋Ｅであると、ダイオ
ードD2がオンするので点Ａの電圧は、（E2＋VF）
〔但し、VFはダイオードD1，D2の順方向電圧〕と
なり、そのとき、モータ１の誘起電圧EMが（E2
＋VF）を越えないと、EM＞E2＋VFであるから電
圧比較器２の出力電圧は＋Ｅのままであつて、こ
の状態が接続され、モータ１は加速方向に給電さ
れるので加速される。 Now, when the output of comparator 2 is +E, diode D 2 is turned on, so the voltage at point A is (E 2 +V F )
[However, V F is the forward voltage of the diodes D 1 and D 2 ], and at that time, the induced voltage E M of the motor 1 is (E 2
+V F ) is not exceeded, since E M > E 2 +V F , the output voltage of voltage comparator 2 remains +E, and this state is connected, and motor 1 is supplied with power in the acceleration direction, so it will not accelerate. be done.
しかしある程度加速されると、誘起電圧EMが
高くなつて（E2＋VF）を越えると、比較器２の
出力電圧は反転し−Ｅとなるので、その時点でダ
イオードD2がオフ、D1がオンとなる。従つて点
Ａの電圧は（E1−VF）となり、モータ１に対す
る給電方向が反転するのでモータ１は減速をはじ
める。この減速は誘起電圧EMが（E1−VF）を下
まわるまで持続し、この下まわつた時点で再び比
較器２の出力が＋Ｅとなり、最初の状態に戻る。
このようにして、モータ１はその誘起電圧EMが
第１の基準電圧（E2＋VF）と第２の基準電圧
（E1−VF）の間を繰返すようにモータ１の回転速
度が制御される。 However, when it is accelerated to a certain extent, the induced voltage E M increases and exceeds (E 2 +V F ), and the output voltage of comparator 2 is reversed and becomes -E. At that point, diode D 2 is turned off and D 1 is turned on. Therefore, the voltage at point A becomes (E 1 -V F ), and the direction of power supply to motor 1 is reversed, so motor 1 begins to decelerate. This deceleration continues until the induced voltage EM falls below (E 1 -V F ), at which point the output of the comparator 2 becomes +E again, returning to the initial state.
In this way, the rotational speed of the motor 1 is increased such that the induced voltage E M of the motor 1 repeatedly changes between the first reference voltage (E 2 +V F ) and the second reference voltage (E 1 -V F ). controlled.
尚、上記実施例では、モータの回転速度が高い
値と低い値との間で繰返してモータを回転させる
ように制御したが、モータの正方向のある回転速
度と逆方向のある回転速度との間でモータを回転
させるように制御する場合でも本発明を適用する
ことができる。 In the above embodiment, the motor was controlled to rotate repeatedly between a high value and a low rotational speed. The present invention can also be applied to the case where the motor is controlled to rotate between the two.
図は本発明の一実施例を示す回路図である。 １……モータ、２……電圧比較器。 The figure is a circuit diagram showing one embodiment of the present invention. 1...Motor, 2...Voltage comparator.
Claims (1)
基準電圧源が夫々第１及び第２のダイオードを介
して比較器の一方の入力に接続され、該比較器の
他方の入力にはモータの誘起電圧が加えられるよ
うになつていて、上記比較器の出力が抵抗を介し
て上記モータと第１及び第２のダイオードに接続
されており、上記モータの誘起電圧が第２の基準
電圧及び第２のダイオードの順方向電圧の和電圧
より小なる時の上記比較器の出力電圧により上記
モータが加速される結果、上記誘起電圧が上記和
電圧以上となることにより、上記比較器の出力電
圧の極性が反転し上記モータが減速されると共に
第１のダイオードがオンとなつて、該モータの誘
起電圧が第１の基準電圧と第１のダイオードの順
方向電圧との差電圧以下となるまで、減速され続
けて、該モータの回転速度を定められた第１の値
から第２の値へ、また第２の値から第１の値へと
なるようにしたことを特徴とするモータの回転速
度制御装置。1 A first reference voltage source and a second reference voltage source having different voltage values are connected to one input of a comparator via first and second diodes, respectively, and the other input of the comparator is connected to a motor. The output of the comparator is connected to the motor and the first and second diodes through a resistor, and the induced voltage of the motor is applied to the second reference voltage and the second reference voltage. As a result of the motor being accelerated by the output voltage of the comparator when it is smaller than the sum voltage of the forward voltages of the second diodes, the induced voltage becomes greater than the sum voltage, and the output voltage of the comparator The polarity of is reversed, the motor is decelerated, and the first diode is turned on until the induced voltage of the motor becomes equal to or less than the differential voltage between the first reference voltage and the forward voltage of the first diode. , the rotation of the motor is continuously decelerated so that the rotational speed of the motor changes from a predetermined first value to a second value and from the second value to the first value. Speed control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57092449A JPS58212382A (en) | 1982-05-31 | 1982-05-31 | Rotating speed controller for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57092449A JPS58212382A (en) | 1982-05-31 | 1982-05-31 | Rotating speed controller for motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58212382A JPS58212382A (en) | 1983-12-10 |
| JPH0125316B2 true JPH0125316B2 (en) | 1989-05-17 |
Family
ID=14054707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57092449A Granted JPS58212382A (en) | 1982-05-31 | 1982-05-31 | Rotating speed controller for motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58212382A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123079A (en) * | 1986-03-10 | 1992-06-16 | Minolta Camera Kabushiki Kaisha | DC motor and controlling system therefor |
-
1982
- 1982-05-31 JP JP57092449A patent/JPS58212382A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58212382A (en) | 1983-12-10 |
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