JPS5872395A - Controller for motor - Google Patents

Controller for motor

Info

Publication number
JPS5872395A
JPS5872395A JP56170020A JP17002081A JPS5872395A JP S5872395 A JPS5872395 A JP S5872395A JP 56170020 A JP56170020 A JP 56170020A JP 17002081 A JP17002081 A JP 17002081A JP S5872395 A JPS5872395 A JP S5872395A
Authority
JP
Japan
Prior art keywords
motor
smoothing capacitor
output
voltage
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.)
Granted
Application number
JP56170020A
Other languages
Japanese (ja)
Other versions
JPS6238955B2 (en
Inventor
Koji Kanbara
神原　孝次
Taiji Tamuro
田室　泰治
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56170020A priority Critical patent/JPS5872395A/en
Publication of JPS5872395A publication Critical patent/JPS5872395A/en
Publication of JPS6238955B2 publication Critical patent/JPS6238955B2/ja
Granted 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
    • 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
    • H02P3/18—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 for stopping or slowing an ac motor
    • H02P3/24—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 for stopping or slowing an ac motor by applying dc to the motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
    • B66B1/308—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor with AC powered elevator drive

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

PURPOSE:To effectively utilize energy stored in a smoothing capacitor by utilizing the energy as that for performing dynamic braking at a motor. CONSTITUTION:When a motor 5 is decelerated with speed setting means 9 in case the motor 5 is rotated, the output frequency of a power inverter 4 varies smoothly since a softening circuit 10 is provided. Thus, regenerative brake is applied, and the terminal voltage of a smoothing capacitor 3 will rise. When the voltage of the capacitor 3 becomes the prescribed value, overvoltage detecting means 16 produces a signal. In this manner, a base signal from a base signal amplifier 14 to a specific element forming a power inverter 4 is stopped. At this time the motor 5 is dynamically braked by the energy from the capacitor 3.

Description

【発明の詳細な説明】 本発明は、特に三相逆変換器の出力で三相交流電動機を
付勢する・、を動機制ｗＪ装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to a motorized WJ device for energizing a three-phase AC motor with the output of a three-phase inverter.

屯動砿運転中に・七勅砿の速度指令をＮ、からＮ２ （但しＮ、＞Ｎ、）に落すと Ａ＝領肘シ」幻止ジ凹（、ｒ）・・・・・・（１）の運
動エネルギーが逆変換器のフライホイールダイオードを
通して順変換器の出力側に設けた平滑用コンデンサに蓄
積される。When the speed command of the seven-wheel drive is lowered from N to N2 (however, N, > N) while driving the turret, the result is A=Ryoji (, r)... ( The kinetic energy of 1) passes through the flywheel diode of the inverse converter and is stored in the smoothing capacitor provided on the output side of the forward converter.

このため平滑用コンデンサの電圧は だけ上昇する。Therefore, the voltage of the smoothing capacitor is only rises.

但し　Ｇｍは三相交流虻動機のＧＤ’ Ｇｚは電動機の負荷のＧＤ’ Ｖｏは減速指令を与える前の平滑用コンデンサの電圧 Ｃは平滑用コンデンサの容量である。However, Gm is GD' of a three-phase AC mill Gz is the motor load GD’ Vo is the voltage of the smoothing capacitor before giving the deceleration command C is the capacitance of the smoothing capacitor.

従って電動機及び（動機の負荷のＧＤ’が大きｂ場合は
大量の運動エネルギが平滑用コンデンサに蓄積され、平
滑用コンデンサの端子受圧はＶ。Therefore, when the load GD' of the motor and motor is large, a large amount of kinetic energy is stored in the smoothing capacitor, and the voltage received at the terminals of the smoothing capacitor is V.

＋ｖＸ１となる。その結果逆変換器順変換器を構成する
素子は耐圧破壊を招くことがあった。+vX1. As a result, the elements constituting the inverse converter and forward converter may suffer breakdown in voltage resistance.

この対策として従来は第１図に示すように平滑用逮コン
デンサ３に対して並列に抵抗７とスイッチング素子８の
直列接続を接続し、減速するときにはスイッチング素子
８を導通状態にしてコンデンサのセ荷を、抵抗７で消費
し、平滑用コンデンサ３の電圧のはねあがりをおさえて
ｈな。Conventionally, as a countermeasure against this problem, a series connection of a resistor 7 and a switching element 8 is connected in parallel to the smoothing capacitor 3, as shown in FIG. is consumed by the resistor 7 and suppresses the voltage jump of the smoothing capacitor 3.

しかしこのような構造のものでは減速に依って平滑用
コンデンサに蓄積されなエネにギーは、抵抗７で熱エネ
ルギーに変換して消責するだけである。また抵抗７やス
イッチング手段８等の回路素子も追加しなはればならな
かつ冷。However, with such a structure, the energy that is not stored in the smoothing capacitor due to deceleration is simply converted into thermal energy by the resistor 7 and dissipated. Also, circuit elements such as the resistor 7 and switching means 8 must be added and cooled.

なお１は三相交流史源、２は順変換器、３は平滑用コン
デンサ、４は三相逆変換器、５は三相交流（動機、６は
電動機５の負荷である、 本発明は以上のような点に捏み成された屯のであって、
その目的とするところは減速指令を与えられることに依
って平滑用コンデンサに蓄積されたエネルギーは（動機
にダイナミックブレーキをかける為のエネルギーにして
有効に使用することのできる電動機制御装置を構成する
ことにある０本発明の他の目的は、電動機の速度が指令
値１で低下しなときには、自動的にダイナミックブレー
キ機能が解ける電動機制御装置を構成することにある。Note that 1 is a three-phase AC source, 2 is a forward converter, 3 is a smoothing capacitor, 4 is a three-phase inverse converter, 5 is a three-phase AC (motor), and 6 is a load of the motor 5. It is a ton made up of points like this,
The purpose of this is to construct a motor control device that can effectively use the energy accumulated in the smoothing capacitor upon receiving a deceleration command (to apply dynamic braking to the motor). Another object of the present invention is to configure an electric motor control device that can automatically release the dynamic brake function when the speed of the electric motor does not decrease by a command value of 1.

すなわち本発明では平滑用コンデンサの両端子間のむ圧
が一定値以上になつなことを検出する過吃圧検出手段を
設け、この過艷圧検出手段が信号を出してｈるときに三
相逆変換器を構成する、特定の１アームを構成する片側
のスイッチング素子を非導通状態だ保ち、電動機に交流
と直流を流すブレーキ制御手段を設ける。That is, in the present invention, an overpressure detecting means is provided to detect when the pressure between both terminals of the smoothing capacitor exceeds a certain value, and when the overpressure detecting means outputs a signal, the three-phase Brake control means is provided to keep a switching element on one side of a specific arm of the inverter in a non-conductive state and to allow alternating current and direct current to flow through the motor.

本発明ではこのように構成するので減速指令を与えられ
ることに依って平滑用コンデンサに蓄積されなエネルギ
ーは電動機にダイナミックブレーキをかける為のエネル
ギとして有効に使用することができる。Since the present invention is constructed in this way, the energy that is not stored in the smoothing capacitor upon receiving a deceleration command can be effectively used as energy for applying dynamic braking to the electric motor.

そのうえ、電動機の速度が設定値まで減速されると平滑
用コンデンサの電圧は通常の値に戻るから過（圧検出手
段は信号を出さなくなる。従って自動的にダイナミック
ブレーキ機能が解け、所期の目的を達成できるのである
。Furthermore, when the speed of the motor is reduced to the set value, the voltage of the smoothing capacitor returns to its normal value, so the overpressure detection means no longer outputs a signal. Therefore, the dynamic braking function is automatically released and the desired purpose is achieved. can be achieved.

ダイナミックブレーキをかけるために電動機に流す電流
の大きさは適当な大きさに制限することが望ましい。そ
のための構成として、例えば順変換器の出力が可変なも
のであれば、たとえば順変換器としてパルス幅変調機能
を有するものであれば、パルスの幅を制限して行うこと
も可能である。It is desirable to limit the magnitude of the current flowing through the motor to apply the dynamic brake to an appropriate magnitude. As a configuration for this purpose, for example, if the output of the forward converter is variable, for example, if the forward converter has a pulse width modulation function, it is possible to limit the pulse width.

過吃圧検出手段が単に過鉋圧になったことを検知するだ
けでなく、過を圧の程度も検知できるものである場合に
は、この過舒圧の程度に例えば比例させてダイナミック
ブレーキ電流を調節するようにすることも可能である。If the overpressure detection means is capable of not only detecting the occurrence of overpressure but also the degree of overpressure, the dynamic brake current may be adjusted in proportion to the degree of overpressure. It is also possible to adjust the

以下第２図第３図に示す本発明の実施例について説明す
る。Embodiments of the present invention shown in FIGS. 2 and 3 will be described below.

１は交流軸、２は交流（源１の出力を整流する順変換器
％３は順変換器２の直流出力側に接続しな平滑用コンデ
ンサ、４は入力側を順変換器の直流出力側に接続し、出
力側を三相交流性４１１Ｉ！５に接続した三相逆変換器
、６は三相宅動機５の負荷である。1 is an AC axis, 2 is a forward converter that rectifies the output of AC (source 1), 3 is a smoothing capacitor that is not connected to the DC output side of forward converter 2, and 4 is an input side that is connected to the DC output side of the forward converter. , and the output side is connected to the three-phase AC 411I!5, and 6 is the load of the three-phase residential machine 5.

９は鉋動ｌｌＡ３の速度を設定する速度設定手段。9 is a speed setting means for setting the speed of the planer IA3.

１０は速度設定手段９の設定の変化をなだらかにするソ
フト回路１０．１１はソフト回路１０の出力に応じた周
波数の信号を出す発振回路、１２は発振回路１１の出力
信号を６等分する分局回路、１３は分局回路１２の出力
を逆変換器４を構成する６つのアームのスイッチング素
子Ｒ，Ｓ、Ｔ。10 is a software circuit that smoothes the change in the settings of the speed setting means 9; 11 is an oscillation circuit that outputs a signal with a frequency corresponding to the output of the software circuit 10; and 12 is a division circuit that divides the output signal of the oscillation circuit 11 into six equal parts. 13 are switching elements R, S, and T of six arms constituting an inverter 4 for converting the output of the branch circuit 12;

Ｕ、Ｖ、Ｗに夫々与えるように分配する分配器、１７は
分配器１３の出力にきざみを入れるバＶス幅変調回路、
１４はバＶス幅変調回路１７の出力を増幅して逆変換器
４を構成する３つのアームのスイッチング素子Ｒ，Ｓ、
Ｔ、Ｕ、Ｖ、Ｗに与えるベース信号増幅器である。17 is a bus width modulation circuit that divides the output of the distributor 13 into steps,
14 are three arm switching elements R, S, which amplify the output of the bus width modulation circuit 17 and constitute the inverter 4;
This is a base signal amplifier that provides signals to T, U, V, and W.

また１５はソフト回路１０の出力を受け、逆変換ｎ４の
出力の周波数と（圧とが比例するようにパルス幅変調回
路１７の出力のパルス幅を変える電圧制御回路である。Further, 15 is a voltage control circuit which receives the output of the software circuit 10 and changes the pulse width of the output of the pulse width modulation circuit 17 so that the frequency of the output of the inverse conversion n4 is proportional to the pressure.

１６は本発明に依って設けた過愛圧検出手段であって、
平滑用コンデンサ３の両端端子Ｉ動圧が−Ｔξ 定値■をよりも大きくなったときに信号を出す。16 is overpressure detection means provided according to the present invention,
A signal is output when the dynamic pressure at both terminals I of the smoothing capacitor 3 becomes larger than -Tξ constant value ■.

一定値Ｖｘは減速指令または停止指令が与えられな偽か
ぎり、平滑用コンデンサ３のｌ［圧がそこまでは高まる
ことはなりであろう値に設定する。The constant value Vx is set to a value at which the l[pressure of the smoothing capacitor 3 will not increase to that extent unless a deceleration command or a stop command is given.

過（圧検出手段１６の出力は、ベース信号増幅器１４に
与える一方、叱正制御回路１５にも与えるようにする。The output of the pressure detection means 16 is applied to the base signal amplifier 14 and also to the reprimand control circuit 15.

そして過（圧検出手段１６が過［を検出するとペース信
号層＠器１４は６個のスイッチング素子Ｒ，Ｓ　、Ｔ、
Ｕ、Ｖ、Ｗ（Ｄ内１ｉｖＡＶへのＯＮ＠号、？ｋ を停止し、三相更動ｓ５に交流と直流化流が瞭れるよう
にする。When the pressure detection means 16 detects an excess, the pace signal layer 14 switches the six switching elements R, S, T,
Stop U, V, W (ON@, ?k to 1ivAV in D, and make AC and DC current clearly visible in three-phase alternating current s5.

一方過電圧検出手段１６が過を圧を検出すると。On the other hand, when the overvoltage detection means 16 detects an overpressure.

電圧制御回路１５を働かせて、逆変換ｎ４を構成するア
ームのスイッチング素子に与えるパルス幅を制限するよ
うにする。なお、このとき過変圧検出回路１６の出力が
大きければ大ｐＬｈはど、パルスＩＰ１！変＃ｉ１回路
１７の出力のパルス幅を広くすることが望まし−。つま
りこの実施例では制御手段は過変圧検出回路１６と、ベ
ース信号増幅＃１４１４とパルス幅間ｉ１１回路１７と
で構成しである。The voltage control circuit 15 is operated to limit the pulse width applied to the switching element of the arm constituting the inverse conversion n4. At this time, if the output of the overvoltage detection circuit 16 is large, pLh is large, and the pulse IP1! It is desirable to widen the pulse width of the output of the variable #i1 circuit 17. That is, in this embodiment, the control means is composed of an over-transformation detection circuit 16, a base signal amplification #1414, and an inter-pulse width i11 circuit 17.

以上のように構成したものの動作を第４図を参照しなが
ら説明する。纂４図の横軸は時間ｔを表わしており縦軸
は平滑用コン？ンサ３の端子間圧Ｖ、ｔ−動機５の回転
速度Ｎ１及び逆変換器４のるときに、速度設定手段９に
依ってｅｓ機５を速度Ｎ２まで減速しようとすると逆変
換器４の出力周波数はソフト回路１０が設けであるため
にＦｌからＦ２になだらかに変化する。これに依り回生
か 制御！Ｒカかかり平滑用コンデンサ５の端子間電圧は■
０から上昇する。平滑用コンデンサ３のｔ圧がＶＸにな
ると過（圧検出手段１６は信号を出す。The operation of the device constructed as above will be explained with reference to FIG. The horizontal axis of Figure 4 represents the time t, and the vertical axis represents the smoothing con? When the terminal pressure V of the sensor 3, the rotational speed N1 of the t-motor 5, and the inverter 4 are applied, when the speed setting means 9 attempts to decelerate the ES machine 5 to the speed N2, the output of the inverter 4 Since the software circuit 10 is provided, the frequency changes smoothly from Fl to F2. Regeneration or control depends on this! The voltage between the terminals of the R-forced smoothing capacitor 5 is ■
It rises from 0. When the t pressure of the smoothing capacitor 3 reaches VX, the excessive pressure detection means 16 outputs a signal.

これに依ってベース信号増幅器１４からは逆変換ｎ４を
構成する特定の素子■へのベース信号は停止される。こ
のため電動４１５には第５図に示すようＵ−Ｖ間には交
流（圧が印加される力ζＶ　−Ｗ、Ｗ−Ｕ間には直流受
圧が印加され、ダイナミックブレーキがかけられる。こ
れに依り回転数がか １、志らｔ１区間に示すように急激に低下する。As a result, the base signal from the base signal amplifier 14 to the specific element (2) constituting the inverse conversion n4 is stopped. Therefore, as shown in FIG. 5, to the electric motor 415, an alternating current (pressure applied force ζV - W is applied between U and V, and a direct current receiving pressure is applied between W and U, and a dynamic brake is applied. As a result, the rotational speed suddenly decreases as shown in the section t1.

なおこのときのエネルギーは平滑用コンデンサ３から供
給されるから平滑用コンデン＋５（Ｄ両端子間え圧は次
第に低くなる。（なお第５図中ｗＳ”ｒＵ’　ＷＷ’は
夫々のスイッチング素子の導通区間を示している。） 逆変換器４を構成するスイッチング素子に与えられるベ
ース信号は叱正制御回路１５によりノ（ルス幅が制限さ
える。Note that since the energy at this time is supplied from the smoothing capacitor 3, the pressure between the smoothing capacitor +5 (D) gradually decreases. The base signal applied to the switching elements constituting the inverter 4 has a noise width limited by the scolding control circuit 15.

回転数がソフト回路１０の出力に相当するｔｌまで低下
すると過変圧検出手段１６は信号を出さなくなる。そう
すると電動機５は回生制動される。When the rotational speed decreases to tl corresponding to the output of the software circuit 10, the over-transformation detection means 16 stops outputting a signal. Then, the electric motor 5 is regeneratively braked.

これがｔ１〜ｔ１間である。回生制動に依って平滑用コ
ンデンサ３の両端子間電圧は再び高くなる。This is between t1 and t1. Due to the regenerative braking, the voltage between both terminals of the smoothing capacitor 3 becomes high again.

そうすると過変圧検出手段１６は再び信号を出すそのた
め電動４１Ｉ５は平滑用コンデンサ５からのエネルギー
に依って再びダイナミックブレーキがかかる。Then, the over-voltage detection means 16 outputs a signal again, so that the electric motor 41I5 is dynamically braked again by the energy from the smoothing capacitor 5.

以下このような動作を繰り返す。そして電動機５の回転
速度がＮ、になると今度は通常の運ｆｈが行われる。This operation is repeated below. Then, when the rotational speed of the electric motor 5 reaches N, the normal operation fh is performed.

本発明は（動機の制動法として、単に直流鉋流ｔ−流し
、ダイナミックブレーキをかけるものに比べ次の点で優
れてｈる。つまり１部回転磁界を持つので逆変換器の位
相と、電動機の位相が同期はずれしなＬ／′ｈ、このた
めブレーキ信号が解除された時スムーズに電動運転に戻
れる。The present invention has the following advantages as a motor braking method compared to a method that simply flows a DC plane flow and applies a dynamic brake.In other words, since it has a partially rotating magnetic field, the phase of the inverter and the motor The phases of L/'h are out of synchronization, so when the brake signal is released, it is possible to smoothly return to electric operation.

するスイッチング手段はトランジスタを用りた場合につ
ｈて説明したが、サイリスタやＧＴＯに依って構成する
こともできる。Although the switching means using transistors has been described above, it can also be constructed using thyristors or GTOs.

ｄはフライホイールダイオードである。d is a flywheel diode.

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

第１図は従来の装置を示す回路図、第２図は本発明装置
の実施例を示す回路図、第３図は三相逆変換器の一例を
示す回路図、第４図は本発明の詳細な説明するために用
いるグラフ、第５図は三相逆変換器を構成するスイッチ
ング素子の導通状態と三相逆変換器の出力側線間受圧を
示すタイムチャートである。 １は交流（源、２は順変換器、６は平滑用コンデンサ、
４は三相逆変換器、５は’１ｉｊｌｌＥＩ］Ｉｉ、　１
５　。 １５は制御手段を構成する分配器と動圧、８ＩＩ御回路
、１６ｄＭ’ｔｌｆ検出手ｆｆ、Ｒ，Ｓ、Ｔ、Ｕ、Ｖ、
Ｗは三相逆変換数を構成するスイッチング素子である。 代理人　弁理士　　薄　　１）　利　　幸、゛第１図 第２図 律３図 第５図 Ｗ′−口二二り上−工二二コーーーロ＝＝ニー−」＝＝
：蕃 閣 １　　−ラ７Fig. 1 is a circuit diagram showing a conventional device, Fig. 2 is a circuit diagram showing an embodiment of the inventive device, Fig. 3 is a circuit diagram showing an example of a three-phase inverter, and Fig. 4 is a circuit diagram showing an example of the inventive device. The graph used for detailed explanation, FIG. 5, is a time chart showing the conduction state of the switching elements constituting the three-phase inverter and the pressure received between the output side lines of the three-phase inverter. 1 is an alternating current (source), 2 is a forward converter, 6 is a smoothing capacitor,
4 is a three-phase inverse converter, 5 is '1ijllEI]Ii, 1
5. 15 is a distributor and dynamic pressure constituting the control means, 8II control circuit, 16dM'tlf detection hand ff, R, S, T, U, V,
W is a switching element that constitutes a three-phase inverse conversion number. Agent Patent Attorney Susuki 1) Toshiyuki, ``Fig.
: Bankaku 1 - La 7

Claims (1)

【特許請求の範囲】[Claims] 交流！Ｐ源と一該交流゛、セ源の出力を！！ｌ７ｙｔす
るｊ頃変逆品と、該１唄戻ｖ４器の１鉦流出力麹に接続
した平滑用コンデンサと、入力１顯を前記、唄変換器の
直流出力側に接続し、出力［１をミ相交流鵠−にＭ！、
続した三＜’ＩＪ逆♂ｍｓと、前記平滑用コンデンサの
両端子−のｒｌＬｆボ一定値以上になつ九ことを検出す
る過電圧検出手段と、破過・上圧検出手段が信号倉出し
之ときに、前記三相逆変換ａを構成する特定の１アーム
を　　　　　　　　　　　　　　　　　構成する片１１
１のスイッチング素子を非導通状態に保つ制御手段とを
有するｔＥＩｉＪｈ磯補御装置。Alternating current! P source and one AC ゛, the output of the source! ! 17yt, a smoothing capacitor connected to the 1st output output of the 1st song return v4 device, the input 1st point connected to the DC output side of the song converter, and the output [1 Mi-sou exchange mouse ni M! ,
overvoltage detection means for detecting that the rlLf voltage at both terminals of the smoothing capacitor exceeds a certain value; , a piece 11 constituting one specific arm constituting the three-phase inverse conversion a.
A tEIiJh iso control device having a control means for keeping one switching element in a non-conductive state.
JP56170020A 1981-10-26 1981-10-26 Controller for motor Granted JPS5872395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56170020A JPS5872395A (en) 1981-10-26 1981-10-26 Controller for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56170020A JPS5872395A (en) 1981-10-26 1981-10-26 Controller for motor

Publications (2)

Publication Number Publication Date
JPS5872395A true JPS5872395A (en) 1983-04-30
JPS6238955B2 JPS6238955B2 (en) 1987-08-20

Family

ID=15897104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56170020A Granted JPS5872395A (en) 1981-10-26 1981-10-26 Controller for motor

Country Status (1)

Country Link
JP (1) JPS5872395A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0446590A (en) * 1990-06-13 1992-02-17 Brother Ind Ltd Machine motor driver
JP2009083852A (en) * 2008-12-19 2009-04-23 Nabtesco Corp Platform door device
EP2174411A4 (en) * 2007-07-26 2015-06-24 Kone Corp Electric motor drive

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0446590A (en) * 1990-06-13 1992-02-17 Brother Ind Ltd Machine motor driver
EP2174411A4 (en) * 2007-07-26 2015-06-24 Kone Corp Electric motor drive
JP2009083852A (en) * 2008-12-19 2009-04-23 Nabtesco Corp Platform door device

Also Published As

Publication number Publication date
JPS6238955B2 (en) 1987-08-20

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