SU463919A1 - A method for measuring the amplitude ratio of two harmonic voltages - Google Patents
A method for measuring the amplitude ratio of two harmonic voltagesInfo
- Publication number
- SU463919A1 SU463919A1 SU1672991A SU1672991A SU463919A1 SU 463919 A1 SU463919 A1 SU 463919A1 SU 1672991 A SU1672991 A SU 1672991A SU 1672991 A SU1672991 A SU 1672991A SU 463919 A1 SU463919 A1 SU 463919A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- measuring
- amplitude ratio
- harmonic voltages
- voltages
- ratio
- Prior art date
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
(электронный или электромеханический). Сигнал в виде последовательности разнопол рных пр моугольных импульсов поступает на синхронный детектор 4 и после усреднени с помощью интегрирующей цепочки 5 регистрируетс прибором 6, реагирующим на среднее значение выходного электрического тока. Управление коммутацией синхронного детектора осуществл етс сигналом, возникающим в датчике 7 коммутирующего напр жени . Последний работает синхронно с источником 1 рабочего сигнала. Необходимую частоту эталонного сигнала можно получить, например, путем умножени частоты рабочего сигнала в целое число раз. В случае низкой частоты рабочего сигнала дл -получени дробного отнощени частот сигналов синхронизирующую св зь между источником 1, датчиком 7 и источником 2 можно осуществл ть известными электромеханическими устройствами.(electronic or electromechanical). The signal as a sequence of opposite-polarized rectangular pulses is fed to the synchronous detector 4 and, after averaging with the help of an integrating chain 5, is detected by the device 6, which reacts to the average value of the output electric current. The switching of the synchronous detector is controlled by a signal arising in the sensor 7 of the switching voltage. The latter operates synchronously with the source 1 of the working signal. The desired frequency of the reference signal can be obtained, for example, by multiplying the frequency of the working signal by an integer number. In the case of a low frequency of the working signal, in order to obtain a fractional frequency ratio of the signals, the synchronization connection between source 1, sensor 7 and source 2 can be accomplished with known electromechanical devices.
Применение предложенного способа позволит по крайней мере в два раза уменьщить погрешность, вызванную нелинейностью градуировочной характеристики. Резко уменьЩаетс также вли ние колебаний частоты и температуры окружающей среды (в начале диапазона измерени эти погрешности практически равны нулю).The application of the proposed method will allow at least two times to reduce the error caused by the nonlinearity of the calibration characteristics. The effect of fluctuations in the frequency and temperature of the environment is also sharply reduced (at the beginning of the measurement range, these errors are practically zero).
Предмет изобретени Subject invention
Способ измерени отношени амплитуд двух гармонических напр жений, основанный на измерении алгебраической суммы сравниваемых напр жений путем преобразовани ее во временную последовательность импульсовA method of measuring the amplitude ratio of two harmonic voltages based on measuring the algebraic sum of the voltages being compared by converting it into a time sequence of pulses
одинаковой высоты, синхронного детектировани этой последовательности импульсов и последующего измерени среднего значени выходного тока, отличающийс тем, что, с целью уменьщени погрешности измерени ,the same height, synchronous detection of this pulse sequence and subsequent measurement of the average value of the output current, characterized in that, in order to reduce the measurement error,
устанавливают начальные частоты сравниваемых напр жений так, чтобы их отношение было равно отнощению неодинаковых целых чисел , например 2/3, 3/4, 4/5, 7/6 и т. д.the initial frequencies of the compared voltages are set so that their ratio is equal to the ratio of different integers, for example 2/3, 3/4, 4/5, 7/6, etc.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1672991A SU463919A1 (en) | 1971-06-28 | 1971-06-28 | A method for measuring the amplitude ratio of two harmonic voltages |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1672991A SU463919A1 (en) | 1971-06-28 | 1971-06-28 | A method for measuring the amplitude ratio of two harmonic voltages |
Publications (1)
Publication Number | Publication Date |
---|---|
SU463919A1 true SU463919A1 (en) | 1975-03-15 |
Family
ID=20480190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1672991A SU463919A1 (en) | 1971-06-28 | 1971-06-28 | A method for measuring the amplitude ratio of two harmonic voltages |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU463919A1 (en) |
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1971
- 1971-06-28 SU SU1672991A patent/SU463919A1/en active
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