JP2000171270A5

JP2000171270A5 -

Info

Publication number: JP2000171270A5
Application number: JP1998342540A
Authority: JP
Filing date: 1998-12-02
Publication date: 2005-04-07

Description

【発明の名称】回転電機制御装置、エンコーダ装置、および制御装置Patent application title: Rotating electrical machine control device, encoder device , and control device

【０００１】
【発明の属する技術分野】
本発明はサーボモートルや、インバータに関するものである。 [0001]
Field of the Invention
The present invention and support Bomo door Lumpur, the present invention relates to the inverter.

上述の従来技術によれば、前者の（１）はエンコーダケーブル長により電圧降下を
計算するのが面倒であり、最終ユーザーに電圧を調整させるのは、使い勝手が悪
いという欠点があった。後者の（２）はフィードバック線が追加となり特殊な電源を
用意しなければならないため、価格的に高価となる。また、フィードバック線は
電圧降下を小さくしなければならないため、電流が流れないようハイインピーダ
ンスにするため、ノイズを拾いやすいという欠点があった。 According to the prior art above mentioned, the former (1) is troublesome to calculate the voltage drop by the encoder cable length, the to adjust the voltage to the final user, usability has a drawback that bad. The latter (2) is expensive in price because a feedback line is added and a special power supply must be prepared. In addition, since the feedback line must have a small voltage drop, it has a drawback that it is easy to pick up noise because it has high impedance so that current does not flow.

【０００５】
【発明が解決しようとする課題】
本発明が解決しようとする課題は、
１）エンコーダの配線長による電圧降下に合わせて、手動にて、その都度エンコーダ電源供給回路の出力電圧を調整することを低減したエンコーダ電源回路を提供する。 [0005]
[Problems to be solved by the invention]
The problem to be solved by the present invention is
1) in accordance with the voltage drop due to the wiring length of the encoder, manually, to provide a reduced encoder power supply circuit to regulate the output voltage of the respective encoder power supply circuit.

３）エンコーダ受電端子の電圧調整をアナログフィードバックによらない制御にしたエンコーダ電源回路とする。
ということである。 3) voltage regulation of the encoder receiving terminals and encoder power supply circuit to control which does not depend on an analog feedback.
That's what it means.

【０００８】
【課題を解決するための手段】
これらの課題を解決する手段として
１）エンコーダ電源供給回路側に設置されている速度、トルクまたは位置制御を含む制御回路と、離れて設置されたエンコーダ間の速度、位置情報をデジタル通信で、エンコーダから制御回路へ転送する。エンコーダには電源電圧のレベルを検出するレベル検出器を設け、その検出したレベルを速度、位置データ転送ラインを通して制御回路に転送し、制御回路はレベル検出データを読み取って、エンコーダ電源供給回路の出力電圧を増減する。 [0008]
[Means for Solving the Problems]
As a means to solve these problems, 1) Encoders with control circuits including speed, torque or position control installed on the encoder power supply circuit side, and speed, position information between encoders installed remotely, in digital communication, encoder to transfer from to the control circuit. The encoder provided the level detector for detecting the level of the supply voltage, the speed and the detected level, to transferred to the control circuit through the position data transfer line, the control circuit reads the level detection data, the encoder power supply circuit Increase or decrease the output voltage .

２）デジタル通信とすることにより、フィードバック線等の新たな通信線追加を不要とする。 2) Digital communication makes it unnecessary to add a new communication line such as a feedback line.

４）制御回路は転送された電圧レベルを読み取って、エンコーダ電源供給回路の出力電圧を増減し、その結果をデジタル通信で確認してから次の動作に移行する。 4) control circuit reads the voltage level transferred, increase or decrease the output voltage of the encoder power supply circuit, the transition from to see the results in digital communication to the next operation.

なお、電源電圧レベル検出回路９の図５、図６で示す回路は、アナログデジタ
ル変換器（Ａ／Ｄコンバータ）を使用することもできる。この場合Ａ／Ｄコンバ
ータにアナログ量である受電端電圧が入力され、デジタルデータに変換されて速
度、位置検出回路へ出力され、動作は前述と同様となる。
以上、本発明の実施例によれば、
１）エンコーダの配線長による電圧降下に合わせて、その都度エンコーダ電源供
給回路の出力電圧調整を行う必要がなくなり、使い勝手が改良できる。またサー
ボモートルとサーボアンプの距離が一般に最大２０から３０ｍと制限されていた
が、さらに離れても問題の生じないシステムが供給出来る様になる。
２）エンコーダ受電端子の電源電圧を一定にするため、従来実施していた専用の
フィードバック線１本ないし２本を追加してフィードバック制御する必要がないため、特殊なエンコーダ電源回路、信号線本数の増加がないためコストアップにならず、しかも省配線エンコーダが実現できる。 The circuits shown in FIGS. 5 and 6 of the power supply voltage level detection circuit 9 can also use an analog-to-digital converter (A / D converter). In this case, the receiving end voltage which is an analog quantity is input to the A / D converter, converted into digital data, and output to the speed and position detection circuit, and the operation is the same as that described above.
As mentioned above, according to the embodiment of the present invention,
1) It is not necessary to adjust the output voltage of the encoder power supply circuit each time according to the voltage drop due to the wiring length of the encoder, and the usability can be improved. Also, although the distance between the servomotor and the servo amplifier is generally limited to a maximum of 20 to 30m, it is possible to supply a system that causes no problem even if it is further away.
2) for stabilizing the supply voltage of the encoder power receiving terminal, there is no need to add to the feedback control of the two to one not only feedback line which has been conventionally carried out, a special encoder supply circuit, the number of signal lines Since there is no increase, the cost does not increase, and a wiring saving encoder can be realized.

４）サーボモートルのエンコーダ受電端子をサーボアンプのエンコーダ電源供給
回路までフィードバックするフィードバック制御では、ループゲインの設定が高
いと発振を起こすことがあるが、データ通信でチェックしながら電圧を増減する
ので、発振の問題は生じ難くなる。 4) In feedback control in which the encoder power receiving terminal of the servomotor is fed back to the encoder power supply circuit of the servo amplifier, oscillation may occur if the setting of the loop gain is high, but the voltage increases or decreases while checking by data communication . oscillation of the problem is that a less likely to occur.

また、本発明の実施例によれば下記の効果がある。 Further , according to the embodiment of the present invention , the following effects can be obtained.

１）エンコーダの配線長による電圧降下に合わせて、手動にて、その都度エンコーダ電源供給回路の出力電圧調整を行う必要がなくなり、使い勝手が改良できる。 1) It is not necessary to manually adjust the output voltage of the encoder power supply circuit each time according to the voltage drop due to the wiring length of the encoder, and the usability can be improved.

【００３７】
【発明の効果】
本発明によれば、エンコーダの配線長による電圧降下に合わせて、手動にて、その都度エンコーダ電源供給回路の出力電圧を調整することを低減したエンコーダ電源回路を提供出来ることとなる。

[0037]
【Effect of the invention】
According to the present invention, it is possible to provide an encoder power supply circuit in which manual adjustment of the output voltage of the encoder power supply circuit is reduced manually in accordance with the voltage drop due to the wiring length of the encoder.

Claims

A control device having a control circuit that controls the rotating electrical machine;
An electric rotating machine control device comprising: an encoder device having a speed position detection circuit for detecting a rotation speed or a rotation position of a rotating electric machine, comprising:
An encoder power supply circuit for supplying power to the encoder device;
Voltage control means for controlling the output voltage of the encoder power supply circuit is provided in the control device;
Further, the encoder device is provided with a level detection circuit that outputs power supply voltage level data obtained by detecting a power supply voltage supplied to the encoder device;
A rotating electrical machine control device characterized in that the voltage adjusting means of the control device is controlled based on the power supply voltage level data of a digital signal transmitted from the encoder device.

The rotating electrical machine control device according to claim 1, wherein
A rotary electric machine control apparatus characterized by converting a speed signal detected by the speed position detection circuit or a position signal and the power supply voltage level data into a digital signal and transmitting the digital signal.

The rotating electrical machine control device according to claim 1, wherein
A rotating electrical machine control device characterized in that a signal line for transmitting electricity is used for signal transmission between the encoder device and the control device.

The rotating electrical machine control device according to claim 1, wherein
A rotary electric machine control device characterized in that optical transmission is used for signal transmission between the encoder device and the control device.

The rotating electrical machine control device according to claim 1, wherein
A rotating electrical machine control apparatus comprising: means for detecting that the detection level of the level detection circuit has become a predetermined level and outputting an encoder power supply voltage abnormality notice signal.

A control circuit that controls the rotating electrical machine;
An encoder power supply circuit that supplies power to an encoder device that detects the rotational speed or rotational position of the rotating electrical machine;
Voltage control means for controlling the output voltage of the encoder power supply circuit;
A control device, wherein power supply voltage level data obtained by detecting a power supply voltage supplied to the encoder device is transmitted as a digital signal, and the voltage adjustment unit controls an output voltage of the encoder power supply circuit.

The control device according to claim 6, wherein
A control device comprising: means for detecting that the power supply voltage level data has reached a predetermined level and outputting an encoder power supply voltage abnormality notice signal.

A speed position detection circuit for detecting a rotation speed or a rotation position of a rotating electric machine controlled by the control device;
A level detection circuit that detects a power supply voltage supplied from the controller to the velocity position detection circuit and outputs power supply voltage level data;
Equipped with
An encoder apparatus for transmitting the power supply voltage level data as a digital signal.

The encoder apparatus according to claim 8, wherein
An encoder device for converting a speed signal detected by the speed position detection circuit or a position signal and the power supply voltage level data into a digital signal and transmitting the digital signal.

The encoder apparatus according to claim 8, wherein
The encoder apparatus, wherein the level detection circuit converts detected power supply voltage level data into a digital signal.