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JPH0265677A - Motor driving method - Google Patents

Motor driving method

Info

Publication number
JPH0265677A
JPH0265677A JP21557688A JP21557688A JPH0265677A JP H0265677 A JPH0265677 A JP H0265677A JP 21557688 A JP21557688 A JP 21557688A JP 21557688 A JP21557688 A JP 21557688A JP H0265677 A JPH0265677 A JP H0265677A
Authority
JP
Japan
Prior art keywords
rotation
value
motor
reverse rotation
less
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
JP21557688A
Other languages
Japanese (ja)
Inventor
Migaku Sawatani
沢谷 琢
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP21557688A priority Critical patent/JPH0265677A/en
Publication of JPH0265677A publication Critical patent/JPH0265677A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To smoothly inverse driving of a motor to its fixed speed normal rotation by setting a rotary speed of the motor when it is in reverse rotation to a predetermined value of less. CONSTITUTION:A reference value is supplied to a comparator block 12 in a microcomputer 1, preparing two kinds of a value omegaREF0, corresponding to a normal rotation, and a value omegaREF1, for instance, corresponding to a rotation 1/3 or less the value omegaREF0, and these values are supplied being switched by a switch block 13. That is, in action in the time of loading, first a direction control signal is reversed while supplying the reference value as the lower value omegaREF1, next when completion of loading is identified, the direction control signal is set to the normal rotation, and the reference value is switched to the normal value omegaREF0. Thus by setting a rotary speed in the time of reverse rotation to a predetermined value or less, a motor is prevented from being locked in reversing, enabling always smooth inverse driving.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えば小型VTRのドラムモータに適用され
るモータ駆動方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a motor driving method applied to, for example, a drum motor of a small VTR.

〔発明の概要〕[Summary of the invention]

本発明はモータ駆動方法に関し、モード遷移中の逆回転
から反転駆動を行う場合に、逆回転時の回転速度を所定
値以下とすることによって、円滑な反転駆動が行われる
ようにしたものである。
The present invention relates to a motor driving method, and when performing reverse rotation from reverse rotation during mode transition, smooth reverse drive is performed by setting the rotational speed during reverse rotation to a predetermined value or less. .

〔従来の技術〕[Conventional technology]

例えばカセット式のVTRで、カセット挿入時のテープ
ローディング中に回転ヘッドドラムを逆回転させて、テ
ープの巻付き事故等を防止する、−とが行われている。
For example, in a cassette-type VTR, a rotary head drum is rotated in reverse during tape loading when a cassette is inserted to prevent tape wrapping accidents.

一方小型のVTRにおいて、ドラムモータにはプランレ
スモータが採用されると共に、さるにホール素子等の回
転位置のセンサも削除(センサレス)し、駆動コイルの
逆起電力によって検出を行うことが考えられた。
On the other hand, in small VTRs, a planless motor is used for the drum motor, and it is also possible to eliminate the rotational position sensor such as a Hall element (sensorless) and perform detection using the back electromotive force of the drive coil. Ta.

〔発明が解決しようとする課題〕゛ ところがこのようなブラシレス、センサレスのモータに
対して、上述のようなテープローディング中の逆回転か
ら定速正回転への反転を行うと、時としてモータが逆回
転のままでロックされてしまい、円滑な反転駆動が行え
ない場合が生じた。
[Problem to be solved by the invention] [However, when such a brushless, sensorless motor is reversed from reverse rotation to constant speed forward rotation during tape loading as described above, the motor may sometimes rotate in reverse. There were cases where the rotation was locked and smooth reversal driving could not be performed.

この出願はこのような点に鑑みてなされたものである。This application was filed in view of these points.

〔課題を解決するための手段] 本発明は、ブラシレス、センサレスのモータ(4)に対
して、モード遷移中に逆回転から定速正回転への反転を
行う(マイクロコンピュータ(1))場合に、上記逆回
転時の回転速度を所定値以下にする(プロy 7(13
) )ことにより、上記定速正回転への反転を円滑に行
えるようにしたモータ駆動方法である。
[Means for Solving the Problems] The present invention provides a method for reversing a brushless, sensorless motor (4) from reverse rotation to constant speed forward rotation during mode transition (microcomputer (1)). , reduce the rotation speed during the above-mentioned reverse rotation to a predetermined value or less (Pro y 7 (13)
)) This is a motor driving method that allows smooth reversal to constant speed forward rotation.

こ作用; これjごよれば、逆回転時の回転速度が所定値以下とさ
れることによって、モータが逆回転のままでロックされ
ることがなくなり、常に円滑な反転駆動を行うことがで
きる。
According to this feature, since the rotational speed during reverse rotation is set to a predetermined value or less, the motor is not locked in reverse rotation, and smooth reverse drive can always be performed.

〔実施例〕〔Example〕

第1図はこの出願の適用される回転ヘントドラム制御/
ステムのブロック図を示す。図において(1)はサーボ
処理等を行うマイクロコンピュータであって、このコン
ピュータ(1)からの速度制御信号がエラー/パワーア
ンプ(2)を通じてドライブ回路(3)に供給されると
共に、コンピュータ(1)からの方向制御信号がドライ
ブ回路(3)に供給され、このドライブ回路(3)から
の制御信号がモータ(4)に供給される。またモータ(
4)に関連して周波数発電機(5)が設けられ、この発
電機(5)からの信号がFGアンプ(6)を通じてコン
ピュータ(1)に供給される。そしてこのコンピュータ
(1)にてFGアンプ(6)の出力信号からモータ(4
)の回転数が検出(ブロック(11))され、この検出
値が任意の基準値(ω、6.)と比較(ブロック(12
> )されて、比較出力が上述の速度制御信号として取
出される。
FIG. 1 shows the rotary hent drum control/control to which this application is applied.
A block diagram of the stem is shown. In the figure, (1) is a microcomputer that performs servo processing, etc., and a speed control signal from this computer (1) is supplied to a drive circuit (3) through an error/power amplifier (2). ) is supplied to a drive circuit (3), and the control signal from this drive circuit (3) is supplied to a motor (4). Also, the motor (
A frequency generator (5) is provided in connection with 4), and a signal from this generator (5) is supplied to the computer (1) through an FG amplifier (6). Then, this computer (1) outputs the output signal of the FG amplifier (6) to the motor (4).
) is detected (block (11)), and this detected value is compared with an arbitrary reference value (ω, 6.) (block (12)).
), and the comparison output is taken out as the speed control signal described above.

これによってモータ(4)の回転数が任意の基準値(ω
、5F)に等しくなるようにサーボが行われる。
As a result, the rotation speed of the motor (4) is set to an arbitrary reference value (ω
, 5F).

さらに第2図は上述のドライブ回路(3)の具体回路を
示し、例えば3相のブラシレス・センサレスのモータ(
4)の各コイルのリード端子a、b、cにドライブ回路
(3)からの3相の駆動信号Δ。u L r B O8
,。
Furthermore, FIG. 2 shows a concrete circuit of the above-mentioned drive circuit (3), for example, a three-phase brushless sensorless motor (
4) A three-phase drive signal Δ is sent from the drive circuit (3) to the lead terminals a, b, and c of each coil. u L r B O8
,.

Co u Lが供給される。一方これらのリード端子a
Cou L is supplied. On the other hand, these lead terminals a
.

b、cの電位がコンパレータ(31A) (31B) 
(31C)  に供給すれ、モータ(4)のコイルの接
続中点の電位と比較されて、逆起電力の発生しているコ
イルが判別される。この判別信号EA、 EB、 Ec
 が制御ロジック回路(32)に供給されて所定の制御
信号CA、CB。
The potentials of b and c are comparators (31A) (31B)
(31C) and is compared with the potential at the midpoint of connection of the coils of the motor (4) to determine which coil is generating the back electromotive force. These discrimination signals EA, EB, Ec
are supplied to the control logic circuit (32) to generate predetermined control signals CA, CB.

C6が形成される。そしてこの制御信号CA、 C,。C6 is formed. And these control signals CA, C,.

C6がそれぞれパワースイッチ(33八) (33B)
 (33C)に供給され、それぞれコンピュータ(1)
からの速度制御信号または接地電位が選択されて、駆動
信号A G u L + B Ou t r COu 
t が形成される。
C6 is a power switch (338) (33B)
(33C) and each computer (1)
The speed control signal from or ground potential is selected to generate the drive signal A G u L + B Out r
t is formed.

なおコンビ;−タ(1)から・の方向制御信号は制御ロ
ジック(32)に供給されて、制御信号CA、 CB、
 CCの形成の順番等が制御される。
Note that the direction control signal from the combination controller (1) is supplied to the control logic (32), and the control signals CA, CB,
The order of CC formation, etc. is controlled.

従ってこの装置において、正常の逆回転時の各部の波形
は第3図に示すようになり、同図下端に示すように駆動
電流が流されて逆回転の駆動が行われる。
Therefore, in this device, the waveforms of each part during normal reverse rotation are as shown in FIG. 3, and a drive current is applied to perform reverse rotation as shown at the bottom of the figure.

ところがこの状態から正回転への反転が行われた場合に
、反転は3相の内の2相を逆にすることで行われるが、
その状態で各部の波形が例えば第4図に示すようになる
と、動作がロックされ逆回転が続けられることになって
しまう。
However, when reversing from this state to forward rotation, the reversal is performed by reversing two of the three phases.
In this state, if the waveforms of each part become as shown in FIG. 4, for example, the operation will be locked and reverse rotation will continue.

すなわち上述の正常の逆回転時には、第5図Aに示すよ
うに各コイルに駆動電流が流され逆回転が行われるのに
対して、反転に失敗したときには同図已に示すように駆
動電流が流されて逆回転が続けられてしまう。
That is, during normal reverse rotation as described above, a drive current is passed through each coil to perform reverse rotation as shown in Figure 5A, whereas when reversal fails, the drive current is turned off as shown in Figure 5A. It gets swept away and continues to rotate in the opposite direction.

そこでこの反転の失敗によるロックを防止する必要があ
る。
Therefore, it is necessary to prevent locking due to this failure of reversal.

ところで上述の反転の失敗による逆回転の回転速度は、
システムや電源電圧の差によって異なるが、正規の動作
ではないためモーフ効率が著しく悪く、定常速度よりも
かなり低い例えば定常の173程度になっている。従っ
て例えば正常な逆回転時の速度を正回転時と等しくする
と、第6図へに示すように通常の速度(ω。)から方向
が反転して速度が低下して行く途中で上述の反転失敗の
領域(ハツチング図示)に入ってしまい、動作がロック
してしまうおそれがある。これに対して同図Bに示すよ
うに、逆回転時の速度を反転失敗の領域より低くしてお
けば、動作は速度低下→停止→反転−速度上昇m一定回
転と円滑に行われるようにすることができる。
By the way, the rotation speed of reverse rotation due to the above-mentioned failure of reversal is
Although it varies depending on the system and the difference in power supply voltage, the morph efficiency is extremely poor because it is not a normal operation, and is much lower than the steady speed, for example, about 173 in the steady state. Therefore, for example, if the speed during normal reverse rotation is equal to the speed during normal rotation, the above-mentioned reversal failure will occur as the direction is reversed from the normal speed (ω) and the speed is decreasing, as shown in Figure 6. There is a risk that the operation will enter the region (shown by hatching) and the operation will become locked. On the other hand, as shown in Figure B, if the speed during reverse rotation is set lower than the region where reversal failure occurs, the operation will be performed smoothly as speed decrease → stop → reversal - speed increase m constant rotation. can do.

そこで上述のシステムブロック図において、マイクロコ
ンピュータ(1)の比較のブロック(12)に供給され
る基準値を正常な回転に相当する値ω1.。
Therefore, in the above system block diagram, the reference value supplied to the comparison block (12) of the microcomputer (1) is set to the value ω1.corresponding to normal rotation. .

と例えばその173以下の回転に相当するω8.F、の
2種類用意し、これらがスイッチのブロック(13)で
切換えられて供給されるように構成する。
For example, ω8. which corresponds to a rotation of 173 or less. Two types, F and F, are prepared, and these are configured to be switched and supplied by a switch block (13).

すなわちローディング時の動作を例えば第7図Aのフロ
ーチャートに示すように、まずステップ〔l〕で方向制
御信号を逆回転とすると共に基準値を低いωREF l
とし、ステップ〔2〕でローディングの完了が判別され
ると、ステップ〔3〕で方向制御信号を正回転とすると
共に基準値を正常のωIEFOに切換える。これlによ
って円滑な反転を行うことができる。
That is, as shown in the flowchart of FIG. 7A, for example, the loading operation is performed by first setting the direction control signal to reverse rotation in step [l] and setting the reference value to a low ωREF l.
When the completion of loading is determined in step [2], the direction control signal is set to normal rotation and the reference value is switched to normal ωIEFO in step [3]. This l allows for smooth reversal.

あるいは同図已に示すように、ステップ〔11〕の逆回
転は正常の値ω11:FOで行い、ステップ〔12〕で
ローディングの完了が判別され、ステップ〔13〕で正
回転とされた後、ステップ〔14〕で反転失敗が判別さ
れ、失敗のときのみステップ〔I5〕で基準値をωRE
FIとし、ステップ〔16〕でサーボのロックを検出し
てステップ〔13〕に戻すようにしてもよい。
Alternatively, as shown in the same figure, the reverse rotation in step [11] is performed at the normal value ω11:FO, the completion of loading is determined in step [12], and the forward rotation is performed in step [13]. In step [14], inversion failure is determined, and only in case of failure, the reference value is set to ωRE in step [I5].
FI may be used, and the lock of the servo may be detected in step [16] and the process may be returned to step [13].

こうして上述の方法によれば、逆回転時の回転速度が所
定値以下とされることによって、モータが逆回転のまま
でロックされることがなくなり、常に円滑な反転駆動を
行うことができる。
In this way, according to the above-described method, since the rotational speed during reverse rotation is set to a predetermined value or less, the motor is not locked while rotating in reverse, and smooth reverse drive can always be performed.

なお上述の反転失敗の領域はシステムの差等によって変
化するが、システム等が決定されれば略一定に決まるも
のである。
Note that the above-mentioned area of inversion failure varies depending on differences in systems, etc., but it is determined to be approximately constant once the system etc. are determined.

また本発明は上述の実施例に限らず、本発明の精神を逸
脱することなく種々の構成が取り得るものである。
Further, the present invention is not limited to the above-described embodiments, but can take various configurations without departing from the spirit of the present invention.

〔発明の効果〕〔Effect of the invention〕

この発明によれば、逆回転時の回転速度が所定値以下と
されることによって、モータが逆回転のままでロックさ
れることがなくなり、常に円滑な反転駆動を行うことが
できるようになった。
According to this invention, by setting the rotation speed during reverse rotation to a predetermined value or less, the motor is no longer locked in reverse rotation, and smooth reverse drive can be performed at all times. .

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

第1図は本発明の適用されるシステムの一例のブロック
図、第2図〜第7図はその説明のための図である。 (1)はマイクロコンピュータ、(3)はドライブ回路
、(4)はモータ、(5)は周波数発電機である。 代  理  人 伊  藤 貞 同 松  隈  秀  盛 第2図 正常/l逆囮転時が波並図 味je月 四う 第6図 止回転峙1゜正回転へ/+5転1=失敗詠場令1孟影図
フ0−ナヤート 第1図
FIG. 1 is a block diagram of an example of a system to which the present invention is applied, and FIGS. 2 to 7 are diagrams for explaining the system. (1) is a microcomputer, (3) is a drive circuit, (4) is a motor, and (5) is a frequency generator. Deputy Director Hitoshi Fujisada Domatsu Hidetaka Kuma Figure 2 normal / l Reverse decoy roll is a wave pattern taste je month Figure 6 Stop rotation facing 1° forward rotation / +5 roll 1 = failure Eiba Rei 1 Meng's Shadow Map F0-Nayat Figure 1

Claims (1)

【特許請求の範囲】 ブラシレス、センサレスのモータに対して、モード遷移
中に逆回転から定速正回転への反転を行う場合に、 上記逆回転時の回転速度を所定値以下にすることにより
、 上記定速正回転への反転を円滑に行えるようにしたモー
タ駆動方法。
[Claims] When reversing a brushless or sensorless motor from reverse rotation to constant speed forward rotation during mode transition, by reducing the rotation speed during the reverse rotation to a predetermined value or less, A motor drive method that allows smooth reversal to constant speed forward rotation.
JP21557688A 1988-08-30 1988-08-30 Motor driving method Pending JPH0265677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21557688A JPH0265677A (en) 1988-08-30 1988-08-30 Motor driving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21557688A JPH0265677A (en) 1988-08-30 1988-08-30 Motor driving method

Publications (1)

Publication Number Publication Date
JPH0265677A true JPH0265677A (en) 1990-03-06

Family

ID=16674724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21557688A Pending JPH0265677A (en) 1988-08-30 1988-08-30 Motor driving method

Country Status (1)

Country Link
JP (1) JPH0265677A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008195520A (en) * 2007-02-15 2008-08-28 Komatsu Utility Co Ltd Hydraulic hose support device for fork lift
US8661366B2 (en) 1998-12-18 2014-02-25 Thomson Licensing Building macro elements for production automation control
US9711180B2 (en) 1998-12-18 2017-07-18 Gvbb Holdings S.A.R.L. Systems, methods, and computer program products for automated real-time execution of live inserts of repurposed stored content distribution

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363512A (en) * 1976-11-17 1978-06-07 Matsushita Electric Ind Co Ltd Motor controller
JPS5992235A (en) * 1982-11-16 1984-05-28 Nippon Denso Co Ltd Wiper device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363512A (en) * 1976-11-17 1978-06-07 Matsushita Electric Ind Co Ltd Motor controller
JPS5992235A (en) * 1982-11-16 1984-05-28 Nippon Denso Co Ltd Wiper device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8661366B2 (en) 1998-12-18 2014-02-25 Thomson Licensing Building macro elements for production automation control
US8726187B2 (en) 1998-12-18 2014-05-13 Thomson Licensing Building macro elements for production automation control
US9711180B2 (en) 1998-12-18 2017-07-18 Gvbb Holdings S.A.R.L. Systems, methods, and computer program products for automated real-time execution of live inserts of repurposed stored content distribution
US10056111B2 (en) 1998-12-18 2018-08-21 Gvbb Holdings S.A.R.L. Systems, methods, and computer program products for multiple aspect ratio automated simulcast production
US10360944B2 (en) 2002-05-09 2019-07-23 Gvbb Holdings S.A.R.L. Systems, methods, and computer program products for multiple aspect ratio automated simulcast production
US10546612B2 (en) 2002-05-09 2020-01-28 Gvbb Holdings S.A.R.L. Systems, methods, and computer program products for automated real-time execution of live inserts of repurposed stored content distribution
JP2008195520A (en) * 2007-02-15 2008-08-28 Komatsu Utility Co Ltd Hydraulic hose support device for fork lift

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