JPH0215124B2 - - Google Patents
Info
- Publication number
- JPH0215124B2 JPH0215124B2 JP2772184A JP2772184A JPH0215124B2 JP H0215124 B2 JPH0215124 B2 JP H0215124B2 JP 2772184 A JP2772184 A JP 2772184A JP 2772184 A JP2772184 A JP 2772184A JP H0215124 B2 JPH0215124 B2 JP H0215124B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- output
- sine wave
- amplitude
- signal
- 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
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 230000010356 wave oscillation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B27/00—Generation of oscillations providing a plurality of outputs of the same frequency but differing in phase, other than merely two anti-phase outputs
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Networks Using Active Elements (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
【発明の詳細な説明】
この発明は２相正弦波発振器に係り、発振器出
力の正弦波の位相、振幅を帰還し基準値と比較、
偏差を求め、この偏差に応じて移相器、増幅器を
調整し、常に指令の位相差を保ちかつ同一振幅値
となる２相の正弦波を生成するもので、負荷によ
る位相誤差を生じず、また構成部品の温度特性、
経年変化の影響を左程受けない新規の２相正弦波
発振器の提供を目的とする。[Detailed Description of the Invention] The present invention relates to a two-phase sine wave oscillator, in which the phase and amplitude of the sine wave output from the oscillator are fed back and compared with a reference value.
This method calculates the deviation and adjusts the phase shifter and amplifier according to this deviation to generate a two-phase sine wave that always maintains the command phase difference and has the same amplitude value, so there is no phase error due to load. Also, the temperature characteristics of the component parts,
The purpose of the present invention is to provide a new two-phase sine wave oscillator that is not affected by aging.
以下図示する実施例により具体的に説明する。
実施例は90゜位相差の２相正弦波発振器であり、
第１図に全体のブロツク図を、第２図にタイムチ
ヤートを示す。第１図において、１は基準発振
器、２は正弦波発振器、３はフイルタ、４，５は
第１、第２の移相器、６は振幅調節器、７，８は
正弦波出力の位相ずれを検知する第１、第２の検
出器、９，１０は検出器出力の位相誤差を増幅、
先の第１、第２の検出器７，８へ補正指令を与え
る第１、第２の誤差増幅器、１１は出力の２相正
弦波の振幅を比較、大小関係を求める振幅比較
器、１２はこの比較結果を基準値である基準発振
器１のデコーダ出力に突き合せ振幅の基準値より
のずれの程度を検出する振幅検出器、１３は振幅
検出器１２出力の振幅誤差を増幅、先の振幅調節
器６へ振幅補正指令を与える振幅用の誤差増幅
器、である。第２図のタイムチヤートは、基準発
振器１のデコーダ出力ａ（20、21、22）、正弦波発
振器２の正弦波信号ｂ、２相の正弦波出力であ
る、振幅調節器６を介した第１の移相器４出力ｃ
及び第２の移相器５出力ｄ、をそれぞれ表わし、
また２相正弦波出力ｃ、ｄは90゜の位相差を有す
る。 This will be explained in detail below using the illustrated embodiments.
The example is a two-phase sine wave oscillator with a 90° phase difference,
Fig. 1 shows the overall block diagram, and Fig. 2 shows a time chart. In Figure 1, 1 is a reference oscillator, 2 is a sine wave oscillator, 3 is a filter, 4 and 5 are first and second phase shifters, 6 is an amplitude adjuster, and 7 and 8 are phase shifts of the sine wave output. The first and second detectors 9 and 10 amplify the phase error of the detector output,
First and second error amplifiers give correction commands to the first and second detectors 7 and 8; 11 is an amplitude comparator that compares the amplitudes of the output two-phase sine waves to determine the magnitude relationship; An amplitude detector 13 amplifies the amplitude error of the output of the amplitude detector 12 by matching this comparison result with the decoder output of the reference oscillator 1, which is a reference value, and detects the degree of deviation of the amplitude from the reference value. This is an amplitude error amplifier that gives an amplitude correction command to the amplifier 6. The time chart in FIG. 2 shows the decoder output a (2 0 , 2 1 , 2 2 ) of the reference oscillator 1, the sine wave signal b of the sine wave oscillator 2, and the amplitude adjuster 6 which is a two-phase sine wave output. The first phase shifter 4 output c
and second phase shifter 5 output d, respectively,
Further, the two-phase sine wave outputs c and d have a phase difference of 90°.
第３図、第４図に２相正弦波出力の一方の出力
ｃの位相を調整する、第１の検出器７、第１の誤
差増幅器９、第１の移相器４の具体的回路例、そ
の動作を説明するためのタイムチヤートを、また
第５図、第６図に同じく正弦波出力の他方出力ｄ
の位相を調整する、第２の検出器８、第２の誤差
増幅器１０、第２の移相器５の具体的回路例、タ
イムチヤートを示す。第３図において、７は第１
の検出器で同期整流の作用をなし、正弦波出力ｃ
を基準発振器１の出力ａ（x1）の同期信号により
同期整流して同期整流波形ｅを得る。この波形ｅ
は第１の誤差増幅器９を介し積分されその積分出
力が零となるよう、即ち波形ｅの平均値が零とな
るように第１の移相器４のCdSに流れる電流を制
御し抵抗値を可変して、一次遅れ時定数を調整す
る。すなわち、正弦波発振器２のフイルタ３を介
した正弦波出力信号b′は第１の移相器４により位
相調整され、またその調整信号は、第１の検出器
７、第１の誤差増幅器９の作用により、当移相器
４出力が基準発振器１出力ａ（x1）の同期信号と
の間で比較、同期整流され得られることとなる。
この結果、第１の移相器４は同期信号ａ（x1）に
同期した正弦波信号を出力する。 3 and 4 show specific circuit examples of the first detector 7, first error amplifier 9, and first phase shifter 4 that adjust the phase of one output c of the two-phase sine wave output. , the time chart for explaining its operation, and the other output d of the sine wave output as well are shown in Figs. 5 and 6.
A specific circuit example and a time chart of the second detector 8, second error amplifier 10, and second phase shifter 5 for adjusting the phase of are shown. In Figure 3, 7 is the first
The detector performs synchronous rectification, and the sine wave output c
is synchronously rectified by the synchronous signal of the output a(x 1 ) of the reference oscillator 1 to obtain a synchronous rectified waveform e. This waveform e
is integrated through the first error amplifier 9, and the current flowing through CdS of the first phase shifter 4 is controlled so that the integrated output becomes zero, that is, the average value of the waveform e becomes zero, and the resistance value is changed. Variable to adjust the first-order lag time constant. That is, the phase of the sine wave output signal b' passed through the filter 3 of the sine wave oscillator 2 is adjusted by the first phase shifter 4, and the adjusted signal is sent to the first detector 7 and the first error amplifier 9. As a result of this action, the output of this phase shifter 4 is compared with the synchronous signal of the reference oscillator 1 output a(x 1 ) and synchronously rectified.
As a result, the first phase shifter 4 outputs a sine wave signal synchronized with the synchronization signal a(x 1 ).
次に、第５図、第６図により90゜位相差の他方
出力ｄを生成する様子を示すが、第５図におい
て、８は第２の検出器で同期整流の作用をなし、
正弦波出力ｃの90゜移相波形ｄを基準発振器１の
出力ａの同期信号x1により同期整流して同期整流
波形ｆを得、これを第２の誤差増幅器１０を介し
積分してその積分出力が零となるよう、即ち波形
ｆの平均値を零とするように第２の移相器５の
CdSに流れる電流を制御し抵抗値を変えて一次遅
れ時定数を調整する。この結果、入力のフイルタ
３を介した発振器２出力信号b′より90゜位相差の
移相器５出力ｄ、即ち先の矩形波信号x1より90゜
の位相差を有する同じく基準発振器１出力の矩形
波信号x2に同期した正弦波信号ｄを得ることとな
る。 Next, FIGS. 5 and 6 show how the other output d with a 90° phase difference is generated. In FIG. 5, 8 is a second detector that acts as a synchronous rectifier.
The 90° phase-shifted waveform d of the sine wave output c is synchronously rectified by the synchronous signal x 1 of the output a of the reference oscillator 1 to obtain the synchronous rectified waveform f, which is integrated via the second error amplifier 10 to obtain its integral value. The second phase shifter 5 is adjusted so that the output is zero, that is, the average value of the waveform f is zero.
The current flowing through CdS is controlled and the resistance value is changed to adjust the first-order lag time constant. As a result, the phase shifter 5 output d has a phase difference of 90 degrees from the oscillator 2 output signal b' via the input filter 3, that is, the reference oscillator 1 output also has a phase difference of 90 degrees from the previous square wave signal x1 . A sine wave signal d synchronized with the rectangular wave signal x 2 is obtained.
第６図のタイムチヤートは上から順に、正弦波
発振器２の正弦波形ｂ、フイルタ３を介した第２
の移相器５の入力信号波形b′、出力の90゜位相差
の正弦波形ｄ同期整流用の基準発振器１からの矩
形波信号x2、同期整流波形ｆをそれぞれ表わす。 The time chart in FIG. 6 shows the sine waveform b of the sine wave oscillator 2, the second
The input signal waveform b' of the phase shifter 5, the output sinusoidal waveform d with a 90° phase difference, the rectangular wave signal x 2 from the reference oscillator 1 for synchronous rectification, and the synchronous rectification waveform f are shown, respectively.
次に第７図、第８図に出力の90゜位相差の２相
正弦波形振幅を自動調整する回路と、そのタイム
チヤートを示す。第７図において、１１は振幅比
較器で出力の２相正弦波ｃ、ｄの振幅を比較し大
小関係を求める。１２は振幅検出器で先の比較器
１１による比較結果を基準値である基準発振器１
のデコーダ出力に突き合せ振幅のずれの程度を検
出するもの、１３は誤差増幅器で得られた振幅ず
れ信号を積分、増幅するもの、６は振幅調節器で
CdSに流れる電流を調整、抵抗値を変え、振幅を
可変し、先の誤差増幅器１３の積分出力を零とす
るよう、即ち２相の正弦波出力の振幅を等しくす
るように制御するものである。第８図のタイムチ
ヤートに上記振幅自動調整回路の各ブロツク入出
力波形を示す。上から順に、基準発振器１の出力
波形ｂ、出力の90゜位相差の２相正弦波形ｃ、ｄ、
振幅調整の基準となる基準発振器１のデコーダ出
力y1，y2、振幅比較器１１出力の２相正弦波振幅
の大小関係を表わす矩形波ｈ（h1、h2）、振幅検出
器１２出力であり矩形波ｈとデコーダ出力y1，y2
とのAND演算を行い振幅のずれの程度を表わす
誤差信号波形z1，z2をそれぞれ表わす。 Next, FIGS. 7 and 8 show a circuit that automatically adjusts the amplitude of the output two-phase sine waveform with a 90° phase difference, and its time chart. In FIG. 7, reference numeral 11 denotes an amplitude comparator which compares the amplitudes of the output two-phase sine waves c and d to determine the magnitude relationship. Reference numeral 12 is an amplitude detector which uses the comparison result from the previous comparator 11 as a reference value, which is the reference oscillator 1.
13 is a device that integrates and amplifies the amplitude deviation signal obtained by the error amplifier, and 6 is an amplitude adjuster.
It adjusts the current flowing through the CdS, changes the resistance value, and varies the amplitude to control the integrated output of the error amplifier 13 to zero, that is, to equalize the amplitudes of the two-phase sine wave outputs. . The time chart in FIG. 8 shows the input and output waveforms of each block of the automatic amplitude adjustment circuit. From top to bottom, the output waveform b of the reference oscillator 1, the two-phase sine waveforms c and d with a 90° phase difference between the outputs,
The decoder outputs y 1 , y 2 of the reference oscillator 1 that serve as the reference for amplitude adjustment, the rectangular wave h (h 1 , h 2 ) representing the magnitude relationship of the two-phase sine wave amplitude of the amplitude comparator 11 output, and the amplitude detector 12 output and the rectangular wave h and decoder output y 1 , y 2
An AND operation is performed with the error signal waveforms z 1 and z 2 representing the degree of amplitude deviation, respectively.
すなわち、90゜位相差の２相出力波形ｃ、ｄを
比較器１１にて比較し、矩形波ｈを得、この波形
ｈと基準となる基準発振器１のデコーダ出力との
AND演算、即ちｃがｄより振幅が大ならば破線
図示の矩形波h1とデコーダ出力y1とが、逆に振幅
小であれば、一点鎖線で図示する矩形波h2の反転
波形2とデコーダ出力y2がAND演算され、誤差
増幅器１３の入力信号として、偏差信号波形z1ま
たはz2が得られることになる。偏差信号が正のz1
波形であれば、誤差増幅器１３の出力は負方向に
増加し、従つてCdSの電流は増し振幅調節器６出
力側の抵抗値が低下、出力ｃの振幅は引下げられ
２相出力の振幅は等しくなる。逆に、偏差信号が
負のz2波形の場合は、反対の動作をなし、誤差増
幅器１３出力は減、CdSの電流も減少し振幅増幅
器の抵抗値は上昇、波形ｃの振幅は増大する。 That is, the comparator 11 compares the two-phase output waveforms c and d with a 90° phase difference to obtain a rectangular wave h, and the difference between this waveform h and the decoder output of the reference oscillator 1, which serves as a reference.
AND operation, that is, if the amplitude of c is larger than d, the rectangular wave h 1 shown by the broken line and the decoder output y 1 will be generated, and if the amplitude is small, the inverted waveform 2 of the rectangular wave h 2 shown by the dashed-dotted line will be generated. The decoder output y 2 is ANDed, and the deviation signal waveform z 1 or z 2 is obtained as the input signal of the error amplifier 13. z 1 with positive deviation signal
If it is a waveform, the output of the error amplifier 13 increases in the negative direction, the current of CdS increases, the resistance value on the output side of the amplitude regulator 6 decreases, the amplitude of the output c decreases, and the amplitudes of the two-phase outputs become equal. Become. Conversely, when the deviation signal is a negative z2 waveform, the opposite operation occurs, the output of the error amplifier 13 decreases, the current of CdS also decreases, the resistance value of the amplitude amplifier increases, and the amplitude of waveform c increases.
このように、本発明は指令の位相差を有する２
相の正弦波信号を求めるに、それぞれの正弦波信
号を基準発振器のデコーダ出力を基準として位相
同期をかけ、負荷の大小とか、温度・経年による
位相誤差を防止したこと、また出力の２相正弦波
信号を直接に比較し両者の振幅差を得、かつこの
偏差をなくすよう一方の相の正弦波信号の振幅
を、先の位相の場合と同様、基準発振器のデコー
ダ出力を基準として調整する方式をとつており、
２相負荷のアンバランスとか、温度・経年による
影響を受けなく、常に両者の振幅は等しく制御す
ることができるという優れた特長を有する。 In this way, the present invention provides two
In order to obtain the phase sine wave signal, each sine wave signal was phase synchronized using the decoder output of the reference oscillator as a reference to prevent phase errors due to the size of the load, temperature, and age, and the two-phase sine wave signal of the output A method in which the amplitude of the sine wave signal of one phase is adjusted based on the decoder output of the reference oscillator, as in the case of the previous phase, in order to directly compare the wave signals to obtain the amplitude difference between the two, and to eliminate this deviation. I am taking
It has the excellent feature that it is not affected by unbalance of the two-phase load, temperature, or age, and can always control both amplitudes to be equal.
図面は、第１図、第２図に全体回路ブロツク
図、タイムチヤートを、第３図、第４図に２相正
弦波出力の一方の出力の位相調整回路ブロツク図
とそのタイムチヤート、第５図、第６図に他方出
力の位相調整回路ブロツク図と、タイムチヤー
ト、第７図、第８図に２相正弦波出力の振幅を等
しくする振幅調整回路とそのブロツク図、をそれ
ぞれ示す。
１……基準発振器、２……正弦波発振器、４…
…第１の移相器、５……第２の移相器、６……振
幅調節器、７……第１の検出器、８……第２の検
出器、９……第１の誤差増幅器、１０……第２の
誤差増幅器、１１……振幅比較器、１２……振幅
検出器、１３……振幅誤差増幅器。
The drawings are as follows: Fig. 1 and Fig. 2 show the overall circuit block diagram and time chart, Fig. 3 and Fig. 4 show the phase adjustment circuit block diagram of one output of the two-phase sine wave output and its time chart, and Fig. 5 6 shows a block diagram and a time chart of a phase adjustment circuit for the other output, and FIGS. 7 and 8 show an amplitude adjustment circuit and its block diagram for equalizing the amplitudes of two-phase sine wave outputs, respectively. 1...Reference oscillator, 2...Sine wave oscillator, 4...
...First phase shifter, 5...Second phase shifter, 6...Amplitude adjuster, 7...First detector, 8...Second detector, 9...First error Amplifier, 10...second error amplifier, 11...amplitude comparator, 12...amplitude detector, 13...amplitude error amplifier.
Claims (1)
コーダ出力に同期して正弦波信号を生成する正弦
波発振器、この正弦波信号を入力として制御信号
により位相調整を行い指令の位相差を有する２相
の正弦波出力をそれぞれ生成する第１、第２の移
相器、この２相の正弦波出力のそれぞれを先のデ
コーダ出力により位相同期をかけ、位相調整を行
うべく、上記正弦波出力とデコーダ出力を比較し
位相偏差を得る第１、第２の検出器と、更に増幅
を行い先の制御信号を得る第１、第２の誤差増幅
器、を備えたことを特徴とする２相正弦波発振回
路。 ２ デコーダ出力を生成する基準発振器、このデ
コーダ出力に同期して正弦波信号を生成する正弦
波発振器、この正弦波信号を入力として制御信号
により位相調整を行い指令の位相差を有する２相
の正弦波出力をそれぞれ生成する第１、第２の移
相器、この２相の正弦波出力のそれぞれを先のデ
コーダ出力により位相同期をかけ、位相調整を行
うべく、上記正弦波出力とデコーダ出力を比較し
位相偏差を得る第１、第２の検出器と、更に増幅
を行い先の制御信号を得る第１、第２の誤差増幅
器、上記２相の正弦波出力のうちの一方を振幅調
整するようにした振幅調節器、この振幅調節器の
出力と他方の正弦波出力を比較し振幅の一致点を
得る比較器、この比較器の振幅一致点出力と先の
デコーダ出力を比較し振幅偏差に応じた幅のパル
ス出力を得る振幅検出器、このパルス出力を増幅
し上記振幅調節器の制御信号として供給する振幅
誤差増幅器、を備えたことを特徴とする２相正弦
波発振回路。[Scope of Claims] 1. A reference oscillator that generates a decoder output, a sine wave oscillator that generates a sine wave signal in synchronization with this decoder output, and a phase difference of commands that uses this sine wave signal as input and performs phase adjustment using a control signal. first and second phase shifters respectively generate two-phase sine wave outputs, each of which is phase-synchronized with the previous decoder output, and in order to perform phase adjustment, 2, characterized in that it comprises first and second detectors that compare the wave output and decoder output to obtain a phase deviation, and first and second error amplifiers that further amplify and obtain a previous control signal. Phase sine wave oscillation circuit. 2. A reference oscillator that generates a decoder output, a sine wave oscillator that generates a sine wave signal in synchronization with this decoder output, and a two-phase sine wave generator that uses this sine wave signal as input and adjusts the phase using a control signal to have a commanded phase difference. The first and second phase shifters each generate a wave output, and each of these two phase sine wave outputs is phase synchronized with the previous decoder output, and the above sine wave output and decoder output are synchronized in order to perform phase adjustment. First and second detectors that compare and obtain a phase deviation, first and second error amplifiers that further amplify and obtain a control signal, and adjust the amplitude of one of the two phase sine wave outputs. A comparator that compares the output of this amplitude adjuster with the output of the other sine wave to obtain a matching point of amplitude, and a comparator that compares the output of the amplitude matching point of this comparator with the output of the previous decoder and calculates the amplitude deviation. A two-phase sine wave oscillation circuit comprising: an amplitude detector that obtains a pulse output with a corresponding width; and an amplitude error amplifier that amplifies the pulse output and supplies it as a control signal to the amplitude adjuster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2772184A JPS60171809A (en) | 1984-02-15 | 1984-02-15 | Two-phase sinusoidal wave oscillating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2772184A JPS60171809A (en) | 1984-02-15 | 1984-02-15 | Two-phase sinusoidal wave oscillating circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60171809A JPS60171809A (en) | 1985-09-05 |
| JPH0215124B2 true JPH0215124B2 (en) | 1990-04-11 |
Family
ID=12228873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2772184A Granted JPS60171809A (en) | 1984-02-15 | 1984-02-15 | Two-phase sinusoidal wave oscillating circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60171809A (en) |
-
1984
- 1984-02-15 JP JP2772184A patent/JPS60171809A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60171809A (en) | 1985-09-05 |
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