JPS60162491A - Braking device of motor - Google Patents
Braking device of motorInfo
- Publication number
- JPS60162491A JPS60162491A JP1860484A JP1860484A JPS60162491A JP S60162491 A JPS60162491 A JP S60162491A JP 1860484 A JP1860484 A JP 1860484A JP 1860484 A JP1860484 A JP 1860484A JP S60162491 A JPS60162491 A JP S60162491A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- rotation speed
- rotating speed
- torque
- prescribed
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/22—Brakes other than speed-regulating brakes
-
- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はレコードプレーヤやコンパクトディスクプレー
ヤ等のモータのブレーキ装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a brake device for a motor of a record player, a compact disc player, or the like.
従来例の構成とその問題点
従来、レコードプレーヤやコンパクトディスクプレーヤ
等の負荷損失の小さなモータのブレーキ装置として、モ
ータ停止指令と同時に動作するプランジャ等の機械的接
触を用いたものや、所定の回転数を設定して、モータ停
止指令からその回転数寸では、そのモータに最大の減速
トルクを与えて減速l〜、その所定の回転数に達した時
点を電子回路で検出し、その時点で減速をやめてブレー
キ動作を終了するもの等が一般的であった。Conventional configurations and their problems Conventionally, brake devices for motors with small load loss such as record players and compact disc players have used mechanical contacts such as plungers that operate at the same time as the motor stop command, or brake devices that operate at the same time as a motor stop command, or brake devices that operate at the same time as a motor stop command. After setting the motor stop command, at that rotation speed, the maximum deceleration torque is applied to the motor to decelerate the motor, and the electronic circuit detects when the predetermined rotation speed is reached, and decelerates at that point. It was common for brakes to stop and stop braking.
しかし、前者については、機械部品の価格、信頼性1発
生ずる雑音等の点で問題があり、後者については、ブレ
ーキトルクの供給を停止する回転数の検出に誤差が発生
した場合、例えば所望の回転数より高い回転数でブレー
キトルクの供給が停止された場合はモータはなかなか停
止せず、また、モータの回転数が0になったにかかわら
ず、ブレーキトルクの供給が停止しない場合はモータが
逆転する等の重大な問題点があった。この従来の方式で
は、ブレーキトルクの供給を停止する時点のモータの回
転数がOであることが理想的であるが、通常、モータの
回転数を検出するだめの周波数発電機は磁石とコイル等
の発電機で構成されているため、低い周波数はど出力電
圧が低下して検出の精度が落ち(回転数0では出力は出
ない)適確にその状態を検出できず、さらには、カウン
タ回路等によって、周波数発電機の周期を検出してプレ
ーギトルク供給の停止タイミングを検出する場合発明の
目的
本発明の目的は、安定に動作するモータのブレーキ装置
、すなわち、再現性よく短時間に停止し、しかも逆転し
たりしない電子回路によるモータのブレーキ装置を提供
することである。However, regarding the former, there are problems in terms of the price of mechanical parts, reliability1, and noise generated, and regarding the latter, if an error occurs in detecting the rotation speed at which brake torque supply is stopped, for example, the desired If the brake torque supply is stopped at a rotation speed higher than the rotation speed, the motor will not stop easily, and if the brake torque supply does not stop even if the motor rotation speed has reached 0, the motor will not stop. There were serious problems such as reversal. In this conventional method, it is ideal that the motor rotation speed is O when the brake torque supply is stopped, but the frequency generator used to detect the motor rotation speed is usually a magnet, coil, etc. Since the generator consists of several generators, at low frequencies, the output voltage decreases and the detection accuracy decreases (no output is output when the rotation speed is 0), making it impossible to accurately detect the condition, and furthermore, the counter circuit Object of the Invention The object of the present invention is to provide a brake device for a motor that operates stably, that is, to stop the motor in a short time with good reproducibility. Moreover, it is an object of the present invention to provide a brake device for a motor using an electronic circuit that does not cause reverse rotation.
発明の構成
本発明のモータのブレーキ装置は、回転しているモータ
に、現在の回転と逆方向のトルクを発生する電力を供給
して減速し、所定の回転数Nを検出した時点で前記モー
タに対する電力の供給を停止するモータのブレーキ装置
であって、前記モータに与える逆方向のトルクを、前記
モータの回転数に応じ−C町変する様に構成したもので
あり、これにより、短時間に、しかも逆転したりしない
安定な動作を確保できるものである。Composition of the Invention The motor braking device of the present invention decelerates a rotating motor by supplying electric power that generates a torque in the opposite direction to the current rotation, and stops the motor when a predetermined rotation speed N is detected. This is a brake device for a motor that stops the supply of electric power to the motor, and is configured to change the torque in the opposite direction applied to the motor by −C depending on the rotational speed of the motor, thereby reducing the power supply for a short time. Furthermore, stable operation without reversing can be ensured.
実施例の説明
以下、本発明の実施例について、図面を参照しながら説
明する。第1図は本発明の実施例の要部ブロック図を示
すものである。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of essential parts of an embodiment of the present invention.
第1図において、1はモータ2の回転数に比例した周波
数信号を発生する周波数発電機で、その出力周波数は、
周波数−電圧変換回路3によってモータ2の回転数に比
例した電圧に変換される。In Fig. 1, 1 is a frequency generator that generates a frequency signal proportional to the number of rotations of a motor 2, and its output frequency is:
The frequency-voltage conversion circuit 3 converts the voltage into a voltage proportional to the rotation speed of the motor 2.
周波数−電圧変換回路3の出力電圧はスイッチ4を経て
、同転基準である基準電圧源6の基準電圧Esと比較さ
えし、その誤差電圧はモータ駆動回路6によって増幅さ
れ、モータ2を駆動する。7は周波数発電機1の出力信
号によって定幅のノ<ルスを発生ずる単安定マルチバイ
ブレータで、スイッチ4がb側で、その出力が°゛H″
H″レベルモータ駆動回路6に対して強制減速指令を出
し、その出力が” L ”レベルの時はモータ駆動回路
6にいかなる指令も出さずに、モータ2へ電力を供給し
ないように動作する。スイッチ4は通常の回転制御時は
a側に接続され、周波数発電機1、周波数−電圧変換回
路3、モータ駆動回路6、モータ2で速度制御ループを
構成して基準電圧ESに対応した回転数に制御される。The output voltage of the frequency-voltage conversion circuit 3 passes through a switch 4 and is even compared with a reference voltage Es of a reference voltage source 6 which is a rotation reference, and the error voltage is amplified by a motor drive circuit 6 to drive the motor 2. . 7 is a monostable multivibrator that generates a constant width noise according to the output signal of the frequency generator 1, and when the switch 4 is on the b side, its output is °゛H''
A forced deceleration command is issued to the motor drive circuit 6 at the H'' level, and when the output is at the "L" level, no command is issued to the motor drive circuit 6, and no power is supplied to the motor 2. The switch 4 is connected to the a side during normal rotation control, and the frequency generator 1, frequency-voltage conversion circuit 3, motor drive circuit 6, and motor 2 form a speed control loop to control the rotation speed corresponding to the reference voltage ES. controlled by.
モータに回転停止指令が出されると、スイッチ4Iib
側に切換えられ、モータ2は周波数発電機1の出力信号
によってトリガされて動作する単安定マルチノ(イブレ
ータ7の出力によって制御され、強制減速状態と、加速
も減速もないモータ慣性のみで回転する疑似ホールド状
態の2状態を交互にくり返し、急激に回転が低下してゆ
く。上記強制減速状態の時間は単安定マルチバイブレー
タ了のLH′ルベルに対応して一定であるため、周波数
発電機1の出力の周期が長くなるにつれ、すなわちモー
タ2の回転数が低下するにつれ、相対的に強制減速の時
間の占める割合が低fし、ブレーキトルクが減少してゆ
く。When a rotation stop command is issued to the motor, switch 4Iib
motor 2 is switched to the side, and the motor 2 is triggered by the output signal of the frequency generator 1 to operate the monostable multi-noise (controlled by the output of the ibrator 7, forced deceleration state, and the pseudo motor rotating only by motor inertia without acceleration or deceleration). The two states of the hold state are repeated alternately, and the rotation rapidly decreases.The time of the forced deceleration state is constant corresponding to the LH' level of the monostable multivibrator, so the output of the frequency generator 1 As the cycle becomes longer, that is, as the rotational speed of the motor 2 decreases, the proportion of time occupied by forced deceleration becomes relatively low, and the brake torque decreases.
第2図(a)は従来のブレーキ方式の一例で、B点でブ
レーキをかけ、回転数N1 を検出するまで、すなわち
P1点寸ではモータに可能な最大のトルクで減速し、そ
の後、モータに電力の供給を停止して、後はモータ自身
の損失(例えば軸横等)で減速し、時間t。で完全に停
止する状態を示している。Figure 2 (a) is an example of a conventional braking system, in which the brake is applied at point B, the motor is decelerated with the maximum possible torque at point P1, and then the motor is After the power supply is stopped, the motor decelerates due to its own loss (for example, from the shaft side), and reaches time t. This shows a complete stop.
この場合、Po点すなわち回転数Oの状態を検出するの
が理想であるが、その回転数の検出は例えばモータに句
属した周波数発電機の周期を開側して行なわれるため、
最低でその検出周期の1周期の誤差の発生が予想される
。そのため、0に近い回転数を検出して強制減速を停止
しようとしても今述べた1周期(回転数はOに近いため
1周期の時間は非常に長くなる。)の誤差のだめ、モー
タ回転数がOに達してもまたモータには減速トルクが供
給され、その結果、モータは逆転してしまうことになる
。In this case, it is ideal to detect the state of point Po, that is, the rotational speed O, but since the rotational speed is detected, for example, by opening the cycle of the frequency generator attached to the motor,
It is expected that an error of at least one period of the detection period will occur. Therefore, even if you try to stop the forced deceleration by detecting a rotation speed close to 0, the motor rotation speed will decrease due to the error of the one cycle (the rotation speed is close to O, so the time for one cycle is very long). Even when O is reached, deceleration torque is still supplied to the motor, and as a result, the motor rotates in reverse.
以」−に述べた問題点をなくすためには上記1周期の誤
差の時間を蝮くする必要がある。すなわち、減速トルク
の供給を停止する回転数を高くする必要があるが、その
場合は完全な停止までには長い時間がかかることになる
。In order to eliminate the problems described below, it is necessary to eliminate the error time of one cycle. That is, it is necessary to increase the rotational speed at which the supply of deceleration torque is stopped, but in that case it will take a long time to completely stop.
第2図(b)は本発明の実施例でブレーキトルクをモー
タ2の回転数に応じて可変した場合、すなわち回転数が
低下するにつれてブレーキトルクの大きさも低下させた
場合の動作を示す図で、回転数が低いほどブレーキトル
ク量も小さくなるだめ、回転の減速の勾配は回転数の低
下に応じで小さくなる。FIG. 2(b) is a diagram showing the operation when the brake torque is varied according to the rotation speed of the motor 2 in the embodiment of the present invention, that is, when the magnitude of the brake torque is also decreased as the rotation speed decreases. The lower the rotational speed, the smaller the amount of brake torque, and the gradient of rotational deceleration becomes smaller as the rotational speed decreases.
第2図(b)に示すように、検出回転数を、第2図(−
)のN1 よりはるかに低い回転数N2に設定しても、
その検出点P2での減速の勾配は十分小さくなっている
ので、多少の検出タイミング誤差が発生しても、減速し
すき゛て逆転してしまうというような事態は発生しない
。すなわち回転数の検出タイミングの誤差が大きくなる
低回転はど、減速の勾配がゆるやかになり、上記誤差の
影響を小さくする様に動作するため、結果的にはモータ
2が完全に停止するだめの時間t1はtoよりもはるか
にt、”、l(なる。As shown in Fig. 2(b), the detected rotation speed is
) Even if you set the rotation speed N2 much lower than N1 of
Since the gradient of deceleration at the detection point P2 is sufficiently small, even if some detection timing error occurs, a situation where the vehicle decelerates too far and reverses does not occur. In other words, at low rotations where the error in the detection timing of the rotation speed becomes large, the slope of deceleration becomes gentler and the effect of the error is reduced, so that the motor 2 cannot be completely stopped. The time t1 becomes much more than t,'',l(.
第3図に示ずbは、第2図(b)で述べた方式をさらに
改良した本発明の第2の実施例の動作を説明するグラフ
で、回転数N3まではモータの発生し得る最大の一定ト
ルクで急激に減速させ、N3以後の動作は、第2図(b
)の場合と同様にブレーキトルクを減少さぜながら停止
させるものである。この場合、単安定マルチバイブレー
タ7をりトリガブル構成としC1その出力パルス幅を回
転数N3に対応する周波数発電機1の出力周波数の周期
と一致させることにより、N3より高い回転数に対して
は゛H′°レベル(強制減速)υ呆n1.− N3より
低い回転数に対しては゛°Mパレベルの°L′ −レベ
ルにX=1する比率が、回転数に応じて変化する構成と
することが出来る。b, not shown in FIG. 3, is a graph explaining the operation of the second embodiment of the present invention, which is a further improvement of the method described in FIG. 2(b). The operation after N3 is as shown in Figure 2 (b).
), the brake torque is reduced to bring the vehicle to a stop. In this case, by setting the monostable multivibrator 7 in a triggerable configuration and making the output pulse width of C1 match the period of the output frequency of the frequency generator 1 corresponding to the rotation speed N3, the '° level (forced deceleration) υ呆n1. - For rotational speeds lower than N3, the ratio of the ゛°Mpa level to the °L'-level of X=1 can be configured to change in accordance with the rotational speed.
第3図のa &」:第1の実施例の動作例で、ブレーキ
指令点Bからすでにブレーキトルクをモータ回転数に夕
・J応させて減少させるため、モータ停止まで多くの時
間がかかることを示している。Fig. 3 a&'': This is an example of the operation of the first embodiment, and since the brake torque is already reduced from the brake command point B in accordance with the motor rotation speed, it takes a long time until the motor stops. It shows.
発明の効果
以上の説明から明らかなように、本発明のモータのブレ
ーキ装置は、信頼性や価格の面で問題点の多い機械ブレ
ーキを必要とせず、し、かも安定に、再現性よく短時間
に停止し、しかも逆転などの現象が発生しないというす
ぐれた効果を有するものである。Effects of the Invention As is clear from the above explanation, the motor braking device of the present invention does not require a mechanical brake, which has many problems in terms of reliability and cost, and can operate stably and reproducibly in a short time. It has the excellent effect of stopping at a certain angle and not causing phenomena such as reversal.
【図面の簡単な説明】
第1図は本発明の一実施例に係るモータのブレーキ装置
の構成を示す要部ブロック図、第2図(a)。
(b)はそれぞれ従来例および本発明の実施例の動作を
説明するだめの特性図、第3図は本発明の第2の実施例
の動作を説明するだめの特性図である。。
1 周波数発電機、2 モータ、3 周波数−電圧変換
回路、4・ −スイッチ、6− モータ駆動回路、7・
単安定マルチノくイブレータ。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図
第2図
3
1
第3図BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of main parts showing the configuration of a motor braking device according to an embodiment of the present invention, and FIG. 2(a) is a block diagram of main parts. (b) is a characteristic diagram for explaining the operation of the conventional example and the embodiment of the present invention, respectively, and FIG. 3 is a characteristic diagram for explaining the operation of the second embodiment of the present invention. . 1 Frequency generator, 2 Motor, 3 Frequency-voltage conversion circuit, 4 - switch, 6- Motor drive circuit, 7
Monostable multi-novel generator. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 1 Figure 3
Claims (1)
ルクを発生する電力を供給して減速し、所定の回転数N
を検出した時点で、前記モ〜りに対する電力の供給を停
止するモータのブレーキ装置であって、前記モータに与
える逆方向のトルクを、前記モータの回転数に応じて可
変するように構成したことを特徴とするモータのブレー
キ装置6、(2)所定の回転数M(ただし、M ) N
)を検出するまで、モータに一定の逆方向トルクを与
え、それ以後、回転数Nを検出するまでは前記モータに
、その回転数に応じた逆方向トルクを与えるようにした
ことを特徴とする特許請求の範囲第(1)項記載のモー
タのブレーキ装置。(1) The rotating motor is decelerated by supplying electric power that generates torque in the opposite direction to the current rotation, and the specified rotation speed N is reached.
A brake device for a motor that stops supplying electric power to the motor when detecting the motor, and is configured to vary the torque in the opposite direction applied to the motor in accordance with the rotation speed of the motor. Brake device 6 for a motor characterized by (2) a predetermined rotation speed M (however, M ) N
) is detected, a constant reverse torque is applied to the motor, and thereafter, until a rotation speed N is detected, a reverse torque corresponding to the rotation speed is applied to the motor. A braking device for a motor according to claim (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1860484A JPS60162491A (en) | 1984-02-03 | 1984-02-03 | Braking device of motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1860484A JPS60162491A (en) | 1984-02-03 | 1984-02-03 | Braking device of motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60162491A true JPS60162491A (en) | 1985-08-24 |
Family
ID=11976242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1860484A Pending JPS60162491A (en) | 1984-02-03 | 1984-02-03 | Braking device of motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60162491A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05211798A (en) * | 1991-02-28 | 1993-08-20 | Toyota Auto Body Co Ltd | Method for controlling brake of brushless dc linear motor |
US5992420A (en) * | 1998-06-25 | 1999-11-30 | Moriyama; Yasunobu | Cigarette-attached extinguishing device |
JP2009095212A (en) * | 2007-10-12 | 2009-04-30 | Panasonic Corp | Drive unit for blushless dc motor, and ventilating airblower equipped with the same |
WO2022064993A1 (en) * | 2020-09-24 | 2022-03-31 | パナソニックIpマネジメント株式会社 | Ceiling fan |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS558202A (en) * | 1978-06-29 | 1980-01-21 | Toshiba Corp | Method of controlling dc braking |
JPS5553195A (en) * | 1978-10-12 | 1980-04-18 | Toshiba Corp | Ac motor speed control device |
-
1984
- 1984-02-03 JP JP1860484A patent/JPS60162491A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS558202A (en) * | 1978-06-29 | 1980-01-21 | Toshiba Corp | Method of controlling dc braking |
JPS5553195A (en) * | 1978-10-12 | 1980-04-18 | Toshiba Corp | Ac motor speed control device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05211798A (en) * | 1991-02-28 | 1993-08-20 | Toyota Auto Body Co Ltd | Method for controlling brake of brushless dc linear motor |
US5992420A (en) * | 1998-06-25 | 1999-11-30 | Moriyama; Yasunobu | Cigarette-attached extinguishing device |
JP2009095212A (en) * | 2007-10-12 | 2009-04-30 | Panasonic Corp | Drive unit for blushless dc motor, and ventilating airblower equipped with the same |
WO2022064993A1 (en) * | 2020-09-24 | 2022-03-31 | パナソニックIpマネジメント株式会社 | Ceiling fan |
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