JPH0458203B2 - - Google Patents
Info
- Publication number
- JPH0458203B2 JPH0458203B2 JP30832588A JP30832588A JPH0458203B2 JP H0458203 B2 JPH0458203 B2 JP H0458203B2 JP 30832588 A JP30832588 A JP 30832588A JP 30832588 A JP30832588 A JP 30832588A JP H0458203 B2 JPH0458203 B2 JP H0458203B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- converter
- controlled variable
- variable element
- movable part
- 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
Links
Landscapes
- Control Of Position Or Direction (AREA)
- Transmitters (AREA)
Description
【発明の詳細な説明】
（発明の属する技術分野）
本発明は、短波送信機等の同調・整合回路ある
いは空中線整合器の同調・整合回路等において、
例えば同調用の可変インダクタンスコイルを制御
対象（被制御可変素子）として所定の目標値に制
御量を保持するフイードバツク制御を行うＡ／Ｄ
変換器を用いた検知検出制御回路に関するもので
ある。Detailed Description of the Invention (Technical field to which the invention pertains) The present invention relates to a tuning/matching circuit for a short wave transmitter or the like or a tuning/matching circuit for an antenna matching device.
For example, an A/D that performs feedback control to maintain the control amount at a predetermined target value using a variable inductance coil for tuning as the controlled object (controlled variable element).
This invention relates to a detection control circuit using a converter.
（従来技術とその問題点）
従来のＡ／Ｄ変換器を用いた位置検出制御回路
は、第２図に示すように、有限の可変領域をもつ
被制御可変素子１と、点線で示したようにその可
動部の全可変領域に対して１対１で連動する可動
接点端子（しゆう動端子）を有し、その両端に
5Vの直流電圧を印加した連続可変抵抗器２と、
可変抵抗器２のしゆう動端子から得られる位置検
出電圧信号をデイジタル符号化するＡ／Ｄ変換器
３と、希望位置データ発生器４と、誤差判別器５
及び駆動回路６とを備え、Ａ／Ｄ変換器３の出力
として得られる被制御可変素子１の可動部の現在
位置データと希望位置データとを誤差判別器５で
比較し、その差が無くなるように駆動回路６によ
つて被制御可変素子１の可動部の位置を制御して
いる。(Prior art and its problems) As shown in Fig. 2, a position detection control circuit using a conventional A/D converter has a controlled variable element 1 having a finite variable area and a control circuit as shown by a dotted line. It has movable contact terminals (swivel terminals) that interlock one-to-one with respect to the entire variable range of the movable part, and there are movable contact terminals at both ends.
Continuous variable resistor 2 to which 5V DC voltage was applied,
An A/D converter 3 that digitally encodes a position detection voltage signal obtained from a sliding terminal of a variable resistor 2, a desired position data generator 4, and an error discriminator 5.
and a drive circuit 6, the error discriminator 5 compares the current position data of the movable part of the controlled variable element 1 obtained as the output of the A/D converter 3 with the desired position data, and makes sure that the difference is eliminated. The position of the movable portion of the controlled variable element 1 is controlled by the drive circuit 6.
例えば、周波数が２〜30MHzの範囲の短波の整
合回路において、被制御可変素子１として１個の
可変インダクタンスコイルを用いる場合、送信周
波数が2MHz付近のときはインダクタンスの大き
い部分で調整をして整合をとるのに対して、送信
周波数20MHz付近のときはインダクタンスの小さ
い部分で調整をして整合をとつている。このよう
な場合に、送信周波数が2MHzのときよりも20M
Hzのときの方がコイルの調整精度を高くする必要
がある。 For example, in a shortwave matching circuit with a frequency range of 2 to 30 MHz, when one variable inductance coil is used as the controlled variable element 1, when the transmission frequency is around 2 MHz, the part with large inductance is adjusted for matching. In contrast, when the transmission frequency is around 20MHz, matching is achieved by adjusting the part with small inductance. In such a case, the transmission frequency is 20M than when the transmission frequency is 2MHz.
When using Hz, it is necessary to adjust the coil with higher precision.
しかし、この回路における被制御可変素子１の
可動部の位置検出制御の分解能すなわち精度は
Ａ／Ｄ変換器３の性能によつて決定され、ビツト
数の大きい高価なＡ／Ｄ変換器に換える以外には
分解能を向上する方法がないという欠点があつ
た。 However, the resolution or accuracy of the position detection control of the movable part of the controlled variable element 1 in this circuit is determined by the performance of the A/D converter 3, and there is no solution other than replacing it with an expensive A/D converter with a large number of bits. The disadvantage was that there was no way to improve the resolution.
（発明の目的）
本発明の目的は、前述の欠点を解決するために
行つたもので、被制御可変素子の使用領域が部分
領域の場合の位置検出分解能を、全領域の場合の
位置検出分解能に比べて向上するように構成され
た位置検出制御回路を提供することにある。(Objective of the Invention) An object of the present invention is to solve the above-mentioned drawbacks, and to improve the position detection resolution when the controlled variable element is used in a partial area, and to improve the position detection resolution when the controlled variable element is used in a partial area. An object of the present invention is to provide a position detection control circuit configured to be improved compared to the above.
（発明の構成および作用）
本発明の位置検出制御回路は、可変領域を有す
る被制御可変素子の可動部に連動するしゆう動端
子を有し両端に直流電圧が印加された連続可変抵
抗器と、該しゆう動端子から得られる直流をデイ
ジタル信号に変換するＡ／Ｄ変換器とを備え、該
Ａ／Ｄ変換器の出力と前記被制御可変素子の可変
動部の所望の位置を示す位置データとを比較して
その差が零になるように前記被制御可変素子の可
動部の位置を制御する位置検出制御回路におい
て、
前記連続可変抵抗器の両端に前記Ａ／Ｄ変換器
の許容入力制限電圧範囲のｍ倍（ｍは１以上の正
の数）で、かつ、その上限値が前記Ａ／Ｄ変換器
の許容入力制限電圧範囲の最大値より高く下限値
が前記Ａ／Ｄ変換器の許容入力制限電圧範囲の最
小値より低い値の直流電圧を印加する直流電圧発
生器を設けるとともに、
前記連続可変抵抗器と前記Ａ／Ｄ変換器との間
に、前記しゆう動端子から得られる直流電圧を該
Ａ／Ｄ変換器の許容入力制限電圧範囲に制限する
リミツタを設けて、前記被制御可変素子の可変領
域内の所望の１／ｍの領域の分解能がｍ倍になる
ように構成されたことを特徴とするものである。(Structure and operation of the invention) The position detection control circuit of the present invention comprises a continuous variable resistor having a sliding terminal interlocked with a movable part of a controlled variable element having a variable region, and having a DC voltage applied to both ends. , an A/D converter that converts direct current obtained from the sliding terminal into a digital signal, and a position indicating the output of the A/D converter and a desired position of the variable part of the controlled variable element. In the position detection control circuit that controls the position of the movable part of the controlled variable element so that the difference becomes zero by comparing the data, the allowable input of the A/D converter is connected to both ends of the continuous variable resistor. m times the limited voltage range (m is a positive number of 1 or more), and whose upper limit is higher than the maximum value of the allowable input limited voltage range of the A/D converter and whose lower limit is the A/D converter. A DC voltage generator that applies a DC voltage of a value lower than the minimum value of the allowable input limit voltage range is provided between the continuous variable resistor and the A/D converter. A limiter is provided to limit the DC voltage generated within the allowable input limit voltage range of the A/D converter, so that the resolution of a desired 1/m region within the variable region of the controlled variable element is multiplied by m. It is characterized by being configured.
以下図面により本発明を詳細に説明する。 The present invention will be explained in detail below with reference to the drawings.
第１図は、本発明による位置検出制御回路の一
実施例を示すブロツク図である。図において、７
は連続可変抵抗器２の両端に直流電圧VRを印加
すための直流電圧発生器であり、８は可変抵抗器
２とＡ／Ｄ変換器３との間に設けられたリミツタ
である。その他の構成部分は第２図と同じであ
る。 FIG. 1 is a block diagram showing one embodiment of a position detection control circuit according to the present invention. In the figure, 7
is a DC voltage generator for applying a DC voltage V R to both ends of the continuous variable resistor 2, and 8 is a limiter provided between the variable resistor 2 and the A/D converter 3. Other components are the same as in FIG. 2.
リミツタ８の最大出力電圧VAはＡ／Ｄ変換器
３の変換可能入力電圧の最大値に等しく、また、
リミツタ８はＡ／Ｄ変換器３の許容入力制限電圧
である０〜VAの範囲を超える電圧を制限する。 The maximum output voltage V A of the limiter 8 is equal to the maximum convertible input voltage of the A/D converter 3, and
The limiter 8 limits the voltage exceeding the range of 0 to V A , which is the allowable input limit voltage of the A/D converter 3.
Ａ／Ｄ変換器３は2Nの分解能をもつＮビツトの
Ａ／Ｄ変換器である。 The A/D converter 3 is an N-bit A/D converter with a resolution of 2N .
ここで、直流電圧発生器７によつて連続可変抵
抗器２の両端に印加する直流電圧VRを、VR＝
ｍ・A（但しｍは１以上の正の数）とし、その最
低値すなわち可変抵抗器２のＡで示す点の対接地
電圧が０〜−ｌ・VA（但しｌｍ−１）の間の所
望の値となるようにｍ及びｌを設定すれば、可変
抵抗器２のＢで示す点（しゆう動端子）の対接地
電圧は、被制御可変素子１の可動部と連動して−
lVA〜（ｍ−１）VAの範囲で変化してリミツタ８
に入力され、０〜VAの範囲を超える電圧がリミ
ツタ８で制限されてＡ／Ｄ変換器３に入力され
る。Ａ／Ｄ変換器３は入力が０〜VAの範囲すな
わち連続可変抵抗器２のしゆう動端子の全変化領
域の１／ｍの範囲について2Nの分解能で誤差判別
器５へデイジタルデータを供給して制御すること
ができることが明らかである。 Here, the DC voltage V R applied to both ends of the continuous variable resistor 2 by the DC voltage generator 7 is expressed as V R =
m・A (where m is a positive number of 1 or more), and the lowest value, that is, the voltage to ground at the point indicated by A of variable resistor 2, is between 0 and -l・V A (however, lm-1). If m and l are set to the desired values, the voltage to ground at the point B (swivel terminal) of the variable resistor 2 will be - in conjunction with the movable part of the controlled variable element 1.
The limiter 8 changes in the range of lV A to (m-1)V A.
The voltage exceeding the range of 0 to V A is limited by the limiter 8 and input to the A/D converter 3 . The A/D converter 3 sends digital data to the error discriminator 5 with a resolution of 2 N for the input range of 0 to V A , that is, the range of 1/m of the total change range of the sliding terminal of the continuous variable resistor 2. It is clear that it can be supplied and controlled.
（発明の効果）
以上詳細に説明したように、本発明の位置検出
制御回路を用いることにより、被制御可変素子の
可動部の位置を制御する場合において、Ｎビツト
のＡ／Ｄ変換器を使用して被制御可変素子の全可
変領域の任意の１／ｍの領域についてｍ倍の分解
能を得ることができるので、Ａ／Ｄ変換器を変換
ビツト数の大きき高価なものに換えることなくｍ
倍の分解能を有するＡ／Ｄ変換器を用いた場合と
同等の位置検出制御回路を構成することができ、
コストを上げることなく精度を上げることがで
き、大きな効果がある。(Effects of the Invention) As explained in detail above, when the position detection control circuit of the present invention is used to control the position of the movable part of the controlled variable element, an N-bit A/D converter is used. Since it is possible to obtain m times the resolution for any 1/m region of the total variable region of the controlled variable element, it is possible to obtain m times the resolution without replacing the A/D converter with an expensive one with a large number of conversion bits.
It is possible to configure a position detection control circuit equivalent to that using an A/D converter with twice the resolution,
Accuracy can be increased without increasing cost, which has a significant effect.
第１図は本発明による位置検出制御回路の一実
施例の構成を示すブロツク図、第２図は従来の位
置検出制御回路の構成を示すブロツク図である。
１……被制御可変素子、２……連続可変抵抗
器、３……Ａ／Ｄ変換器、４……希望位置データ
発生器、５……誤差判別器、６……駆動回路、７
……直流電圧発生器、８……リミツタ。
FIG. 1 is a block diagram showing the configuration of an embodiment of a position detection control circuit according to the present invention, and FIG. 2 is a block diagram showing the configuration of a conventional position detection control circuit. DESCRIPTION OF SYMBOLS 1... Controlled variable element, 2... Continuous variable resistor, 3... A/D converter, 4... Desired position data generator, 5... Error discriminator, 6... Drive circuit, 7
...DC voltage generator, 8...Limiter.
Claims (1)
連動するしゆう動端子を有し両端に直流電圧が印
加された連続可変抵抗器と、該しゆう動端子から
得られる直流電圧をデイジタル信号に変換する
Ａ／Ｄ変換器とを備え、該Ａ／Ｄ変換器の出力と
前記被制御可変素子の可動部の所望の位置を示す
位置データとを比較してその差が零になるように
前記被制御可変素子の可動部の位置を制御する位
置検出制御回路において、 前記連続可変抵抗器の両端に前記Ａ／Ｄ変換器
の許容入力制限電圧範囲のｍ倍（ｍは１以上の正
の数）で、かつ、その上限値が前記Ａ／Ｄ変換器
の許容入力制限電圧範囲の最大値より高く下限値
が前記Ａ／Ｄ変換器の許容入力制限電圧範囲の最
小値より低い値の直流電圧を印加する直流電圧発
生器を設けるとともに、 前記連続可変抵抗器と前記Ａ／Ｄ変換器との間
に、前記しゆう動端子から得られる直流電圧を該
Ａ／Ｄ変換器の許容入力制限電圧範囲に制限する
リミツタを設けて、前記被制御可変素子の可変領
域内の所望の１／ｍの領域の分解能がｍ倍になる
ように構成されたことを特徴とする位置検出制御
回路。[Claims] 1. A continuous variable resistor having a sliding terminal interlocked with a movable part of a controlled variable element having a variable region and having a DC voltage applied to both ends, and a continuous variable resistor obtained from the sliding terminal. and an A/D converter that converts a DC voltage into a digital signal, and compares the output of the A/D converter with position data indicating a desired position of the movable part of the controlled variable element to determine the difference. In the position detection control circuit that controls the position of the movable part of the controlled variable element so that the controlled variable element becomes zero, a voltage of m times (m is (a positive number of 1 or more), and its upper limit is higher than the maximum value of the allowable input limit voltage range of the A/D converter and the lower limit is the minimum value of the allowable input limit voltage range of the A/D converter. A DC voltage generator that applies a DC voltage of a lower value is provided, and the DC voltage obtained from the sliding terminal is connected between the continuous variable resistor and the A/D converter. A position characterized in that a limiter is provided to limit the allowable input voltage range of the device, so that the resolution of a desired 1/m region within the variable region of the controlled variable element is multiplied by m. Detection control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30832588A JPH02154513A (en) | 1988-12-06 | 1988-12-06 | Position detection control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30832588A JPH02154513A (en) | 1988-12-06 | 1988-12-06 | Position detection control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02154513A JPH02154513A (en) | 1990-06-13 |
| JPH0458203B2 true JPH0458203B2 (en) | 1992-09-16 |
Family
ID=17979697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30832588A Granted JPH02154513A (en) | 1988-12-06 | 1988-12-06 | Position detection control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02154513A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0480142U (en) * | 1990-11-26 | 1992-07-13 |
-
1988
- 1988-12-06 JP JP30832588A patent/JPH02154513A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02154513A (en) | 1990-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |