JP2596521Y2 - Motor start compensation device - Google Patents
Motor start compensation deviceInfo
- Publication number
- JP2596521Y2 JP2596521Y2 JP1992073313U JP7331392U JP2596521Y2 JP 2596521 Y2 JP2596521 Y2 JP 2596521Y2 JP 1992073313 U JP1992073313 U JP 1992073313U JP 7331392 U JP7331392 U JP 7331392U JP 2596521 Y2 JP2596521 Y2 JP 2596521Y2
- Authority
- JP
- Japan
- Prior art keywords
- output
- voltage
- speed
- motor
- priority 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.)
- Expired - Fee Related
Links
Landscapes
- Motor And Converter Starters (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、電動機の速度制御装置
のうち、緩やかな加速特性を持つ装置、特にＳ字形の加
速特性を持つ装置において、電動機の起動を円滑にする
起動補償装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starter compensating device for smooth starting of a motor in a device having a gradual acceleration characteristic among motor speed control devices, particularly in a device having an S-shaped acceleration characteristic. It is.
【０００２】[0002]
【従来の技術】加速特性にＳ字形を持つ速度制御装置に
より電動機を起動する場合、電動機及び電動機に結合さ
れた負荷装置の静止摩擦の影響により、円滑に起動しな
いという不具合があった。このような不具合に対して、
図２に示すようなＣＲ微分回路11の出力を起動補償とし
て、Ｓ字形の加速減器12の速度指令出力に加えることに
より、起動時のみ速度指令電圧を増加させ、電動機15を
静止摩擦力より脱出させ、起動を円滑にしようとする起
動補償装置であった。なお、13は起動スイッチ、14は速
度制御器、16は回転数検出器、17，18は演算器である。2. Description of the Related Art When a motor is started by a speed control device having an S-shaped acceleration characteristic, the motor does not start smoothly due to the effect of static friction of the motor and a load device coupled to the motor. For such defects,
By adding the output of the CR differentiating circuit 11 as shown in FIG. 2 as a starting compensation to the speed command output of the S-shaped acceleration reducer 12, the speed command voltage is increased only at the time of starting, and the electric motor 15 is controlled by the static friction force. It was a start-up compensator that tried to escape and smooth start-up. In addition, 13 is a start switch, 14 is a speed controller, 16 is a rotation speed detector, and 17 and 18 are arithmetic units.
【０００３】[0003]
【考案が解決しようとする課題】しかしかような装置に
おいては、次のような欠点があった。ＣＲ微分回路を使
用しているだけのため補償量の調整が難しく、補償量が
小さければ起動が遅れ、補償量が大きければ起動遅れは
ないが、起動時の速度が零から滑らかに上昇するのでな
く、いきなり加速するため、いずれにしても、Ｓ字加速
による衝撃のない起動をさせるように調整することが難
しい。本考案は、これらの欠点を解決するために考案さ
れたもので、その目的とするところは、Ｓ字加速の際、
緩やかな起動が円滑に行われるようにする電動機の起動
補償装置を提供するものである。However, such an apparatus has the following disadvantages. Since only the CR differentiator is used, it is difficult to adjust the compensation amount. If the compensation amount is small, the start is delayed, and if the compensation amount is large, there is no start-up delay, but the speed at the start increases smoothly from zero. Therefore, it is difficult to make any adjustments so as to start without any shock due to the S-shaped acceleration. The present invention has been devised in order to solve these disadvantages.
An object of the present invention is to provide a starter compensating device for an electric motor so that a gentle start is performed smoothly.
【０００４】[0004]
【課題を解決するための手段】つまり、その目的を達成
するための手段は、第１の設定器からの固定電圧と帰還
回路の入力電圧とを比較し、この入力電圧が前記固定電
圧より高いときのみ電圧を出力する第１の正出力優先回
路と、この出力電圧と第２の設定器からの固定電圧とを
比較し、この固定電圧が前記第１の正出力優先回路の出
力電圧より高いときのみ電圧を出力する第２の正出力優
先回路より構成され、この出力を速度制御器などを経て
その信号を電動機に伝達するものである。Means for achieving the object is to compare a fixed voltage from the first setting device with an input voltage of a feedback circuit, and this input voltage is higher than the fixed voltage. A first positive output priority circuit that outputs a voltage only when the output voltage is compared with a fixed voltage from a second setting device, and the fixed voltage is higher than the output voltage of the first positive output priority circuit. A second positive output priority circuit that outputs a voltage only when the signal is output is transmitted to a motor via an output via a speed controller or the like.
【０００５】[0005]
【作用】図１において、第１の設定器１からの固定電圧
V1より、電動機の速度である入力電圧Viの方が小さいと
きは、第１の正出力優先回路２の出力は零となるため、
第２の設定器３の固定電圧V3相当の電圧が第２の正出力
優先回路４より出力される。また、入力電圧Viのほうが
大きいときは、第１の正出力優先回路２より電圧が出力
されるが、アンプ５の増幅度を充分大きくしておけば、
第１の正出力優先回路２の出力は固定電圧V3より大きく
なるため、第２の正出力優先回路４の出力は零となる。
入力電圧Viを電動機15の速度帰還電圧とし、固定電圧V1
を静止摩擦より動摩擦に移行する速度とし、固定電圧V3
を補償量とすれば、第２の正出力優先回路４の出力は電
動機15の速度が零より、静止摩擦より動摩擦に移行する
速度までの間出力される。この第２の正出力優先回路4
の出力を、従来例と同様、Ｓ字形速度指令出力に加える
ことで、起動時のみ速度指令電圧を増加させる。In FIG. 1, the fixed voltage from the first setting device 1 is shown.
When the input voltage Vi, which is the speed of the motor, is smaller than V1, the output of the first positive output priority circuit 2 becomes zero.
A voltage corresponding to the fixed voltage V3 of the second setting unit 3 is output from the second positive output priority circuit 4. When the input voltage Vi is higher, a voltage is output from the first positive output priority circuit 2. However, if the amplification degree of the amplifier 5 is sufficiently increased,
Since the output of the first positive output priority circuit 2 becomes larger than the fixed voltage V3, the output of the second positive output priority circuit 4 becomes zero.
The input voltage Vi is the speed feedback voltage of the motor 15, and the fixed voltage V1
Is the speed of transition from static friction to dynamic friction, and fixed voltage V3
Is the compensation amount, the output of the second positive output priority circuit 4 is output from when the speed of the electric motor 15 is zero until the speed at which the static friction shifts to dynamic friction. This second positive output priority circuit 4
Is added to the S-shaped speed command output as in the conventional example, so that the speed command voltage is increased only at the time of startup.
【０００６】[0006]
【実施例】図１は本考案の一実施例を示す構成図であ
り、図中、図２と同符号のものは同じ構成，機能を有
す。図１において、第１の設定器１からの固定電圧V1と
電動機15からの帰還電圧Viとを比較する第１の演算器６
と、この演算器６の出力電圧を入力し正出力のみを出力
する第１の正出力優先回路２と、この第１の正出力優先
回路２の出力電圧V2と第２の設定器３からの固定電圧V3
とを比較する第２の演算器７と、この第２の演算器７の
出力電圧を入力し正出力のみを出力する第２の正出力優
先回路４とを備え、この第２の正出力優先回路４の出力
信号を演算器８や速度制御器９などを介して電動機15に
伝達するよう構成したものである。なお10はアンプ（反
転増幅器）である。なお、本考案を使用する場合は、前
述したように入力電圧Viとして、電動機の速度帰還電圧
を入力し、固定電圧V1を電動機15の負荷の摩擦が静止摩
擦より動摩擦に移行する速度とし、固定電圧V3を起動補
償電圧とする。FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, components having the same reference numerals as those in FIG. 2 have the same configuration and function. In FIG. 1, a first computing unit 6 for comparing a fixed voltage V1 from the first setting unit 1 with a feedback voltage Vi from the electric motor 15 is shown.
A first positive output priority circuit 2 for inputting an output voltage of the arithmetic unit 6 and outputting only a positive output, and an output voltage V2 of the first positive output priority circuit 2 and a signal from the second setting unit 3. Fixed voltage V3
And a second positive output priority circuit 4 which receives the output voltage of the second arithmetic unit 7 and outputs only the positive output, and the second positive output priority circuit 4. The configuration is such that the output signal of the circuit 4 is transmitted to the electric motor 15 via the arithmetic unit 8 and the speed controller 9. Reference numeral 10 denotes an amplifier (inverting amplifier). When the present invention is used, as described above, the speed feedback voltage of the motor is input as the input voltage Vi, and the fixed voltage V1 is a speed at which the friction of the load of the motor 15 shifts from static friction to dynamic friction, and fixed. The voltage V3 is used as a startup compensation voltage.
【０００７】次に、かようなごとく構成された装置の動
作について詳細に述べる。入力電圧Viと固定電圧V1の比
較出力を、第１の正出力優先回路２に通せば、電動機15
の速度が、電動機15の負荷の摩擦が静止摩擦より動摩擦
に移行する速度より低いときは、正出力優先回路２の出
力は零となるため、第２の正出力優先回路４は、固定電
圧V3に相当する電圧を出力する。また、電動機15の速度
が、電動機15の負荷の摩擦が静止摩擦より動摩擦に移行
する速度より高いときは、アンプ（反転増幅器）５の増
幅度を充分大きくしておけば、第１の正出力優先回路２
の出力は、固定電圧V3より大きくなるため、第２の正出
力優先回路４の出力は零となる。以上のような第２の正
出力優先回路４の出力を、加速特性にＳ字形を持つ速度
制御装置のＳ字形速度指令出力に加えれば、電動機15の
速度が電動機15の負荷の摩擦が静止摩擦より動摩擦に移
行する速度より低いときのみ、速度制御装置の速度設定
入力に起動補償を加えることができる。また、電動機負
荷装置の摩擦が動摩擦になれば、摩擦力は小さくなるの
で、起動補償は不要であるため、第２の正出力優先回路
の出力も零となるようになっている。Next, the operation of the thus configured device will be described in detail. If the comparison output of the input voltage Vi and the fixed voltage V1 is passed through the first positive output priority circuit 2, the motor 15
Is lower than the speed at which the load friction of the motor 15 shifts from the static friction to the dynamic friction, the output of the positive output priority circuit 2 becomes zero, and the second positive output priority circuit 4 outputs the fixed voltage V3 Is output. When the speed of the electric motor 15 is higher than the speed at which the friction of the load of the electric motor 15 shifts from the static friction to the dynamic friction, if the amplification degree of the amplifier (inverting amplifier) 5 is sufficiently increased, the first positive output can be obtained. Priority circuit 2
Is higher than the fixed voltage V3, the output of the second positive output priority circuit 4 becomes zero. When the output of the second positive output priority circuit 4 as described above is added to the S-shaped speed command output of the speed control device having the S-shaped acceleration characteristic, the speed of the motor 15 is reduced by the friction of the load of the motor 15 to the static friction. Only when the speed is lower than the speed at which the dynamic friction shifts, start compensation can be added to the speed setting input of the speed control device. Further, if the friction of the motor load device becomes dynamic friction, the frictional force becomes small, so that the start-up compensation is not required, so that the output of the second positive output priority circuit becomes zero.
【０００８】[0008]
【考案の効果】以上説明したように本考案によれば、固
定電圧V1を調整することにより、速度補償をすべき速度
を、また、固定電圧V3を調整することにより、速度補償
量をそれぞれ別々に調整できるため調整が簡単となる。
また。ＣＲ微分回路とは違い、補償量が時間的に一定な
ため、緩やかな加速特性を持つ場合、特に、Ｓ字形の加
速特性を持つ場合において、衝撃のない滑らかな起動を
させるように調整することが容易となる。[Effects of the Invention] As described above, according to the present invention, the speed to be speed-compensated is adjusted by adjusting the fixed voltage V1, and the speed compensation amount is adjusted separately by adjusting the fixed voltage V3. Can be adjusted easily.
Also. Unlike the CR differentiator circuit, the compensation amount is constant over time, so if it has a gradual acceleration characteristic, especially if it has an S-shaped acceleration characteristic, adjust it so that it can start smoothly without impact. Becomes easier.
【０００９】[0009]
【図１】図１は本考案の一実施例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of the present invention.
【図２】図２は従来の一例を示す構成図である。FIG. 2 is a configuration diagram showing an example of the related art.
【００１０】[0010]
１ 第１の設定器 ２ 第１の正出力優先回路 ３ 第２の設定器 ４ 第２の正出力優先回路 ５ アンプ（反転増幅器） ６ 第１の演算器 ７ 第２の演算器 ８ 演算器 ９ 速度制御器 10 アンプ（反転増幅器） DESCRIPTION OF SYMBOLS 1 1st setting device 2 1st positive output priority circuit 3 2nd setting device 4 2nd positive output priority circuit 5 Amplifier (inverting amplifier) 6 1st computing unit 7 2nd computing unit 8 Computing unit 9 Speed controller 10 Amplifier (inverting amplifier)
Claims (1)
当する第１の設定器からの固定電圧と電動機の速度に相
当する電動機からの帰還電圧とを比較し第１の設定器か
らの固定電圧より電動機の速度に相当する電動機からの
帰還電圧が大きい時出力が正となる第１の演算器と、こ
の第１の演算器の出力電圧を入力し正出力のみを出力す
る第１の正出力優先回路と、この第１の正出力優先回路
の出力電圧と起動補償電圧に相当する第２の設定器から
の固定電圧とを比較し第２の設定器からの固定電圧より
第１の正出力優先回路の出力電圧が小さい時出力が正と
なる第２の演算器と、この第２の演算器の出力電圧を入
力し正出力のみを出力する第２の正出力優先回路とを備
え、この第２の正出力優先回路の出力信号を速度指令出
力に加える演算器や速度制御器などを介して電動機に伝
達するよう構成したことを特徴とする電動機の起動補償
装置。A fixed voltage from a first setter is compared with a fixed voltage from a first setter corresponding to a speed at which static friction is changed to dynamic friction and a feedback voltage from the motor corresponding to a speed of the motor. A first computing unit whose output is positive when the feedback voltage from the motor corresponding to the speed of the motor is greater, and a first positive output which receives the output voltage of the first computing unit and outputs only the positive output The priority circuit compares an output voltage of the first positive output priority circuit with a fixed voltage from a second setting device corresponding to a start-up compensation voltage, and outputs a first positive output from the fixed voltage from the second setting device. A second arithmetic unit whose output is positive when the output voltage of the priority circuit is small; and a second positive output priority circuit which receives the output voltage of the second arithmetic unit and outputs only the positive output. An arithmetic unit for adding the output signal of the second positive output priority circuit to the speed command output, A motor start-up compensating device characterized in that the device is transmitted to a motor via a speed controller or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992073313U JP2596521Y2 (en) | 1992-09-28 | 1992-09-28 | Motor start compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992073313U JP2596521Y2 (en) | 1992-09-28 | 1992-09-28 | Motor start compensation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0631394U JPH0631394U (en) | 1994-04-22 |
| JP2596521Y2 true JP2596521Y2 (en) | 1999-06-14 |
Family
ID=13514565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992073313U Expired - Fee Related JP2596521Y2 (en) | 1992-09-28 | 1992-09-28 | Motor start compensation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2596521Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180101837A (en) * | 2017-03-06 | 2018-09-14 | 엘에스산전 주식회사 | Apparatus for controlling inverter |
-
1992
- 1992-09-28 JP JP1992073313U patent/JP2596521Y2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180101837A (en) * | 2017-03-06 | 2018-09-14 | 엘에스산전 주식회사 | Apparatus for controlling inverter |
| US10411630B2 (en) | 2017-03-06 | 2019-09-10 | Lsis Co., Ltd. | Inverter control apparatus |
| KR102036031B1 (en) * | 2017-03-06 | 2019-10-25 | 엘에스산전 주식회사 | Apparatus for controlling inverter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0631394U (en) | 1994-04-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |