RU94019789A - Method for detection of constant constituent in harmonic signal
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Method for detection of constant constituent in harmonic signal
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Publication number
RU94019789A
RU94019789ARU94019789/09ARU94019789ARU94019789ARU 94019789 ARU94019789 ARU 94019789ARU 94019789/09 ARU94019789/09 ARU 94019789/09ARU 94019789 ARU94019789 ARU 94019789ARU 94019789 ARU94019789 ARU 94019789A
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Application filed by Б.Г. КелехсаевfiledCriticalБ.Г. Келехсаев
Priority to RU94019789/09ApriorityCriticalpatent/RU94019789A/en
Publication of RU94019789ApublicationCriticalpatent/RU94019789A/en
Measurement Of Mechanical Vibrations Or Ultrasonic Waves
(AREA)
Abstract
FIELD: instruments. SUBSTANCE: method involves generation of additional sine signal which period equals to period of signal to be measured, shift of one signal with respect to another one by phase in order to achieve equal or opposite phases in both signals. Level of constant constituent is judged by instantaneous level of investigated harmonic signal when additional sine signal is zero. This results in possibility to measure constant constituent for time that is less than half of oscillation frequency of signal to be investigated. This is important for low-frequency signals. EFFECT: increased speed. 2 dwg
Claims (1)
Изобретение относится к области измерительной техники и предназначено для определения постоянной составляющей в гармоническом сигнале при анализе его характеристик. Цель - повышение быстродействия. Сущность изобретения: формируют дополнительный синусоидальный сигнал с периодом исследуемого сигнала, сдвигают по фазе один сигнал относительно другого так, чтобы они были синфазны или противофазны, а значение постоянной составляющей в сигнале определяют по мгновенному значению исследуемого гармонического сигнала в момент времени, когда дополнительный синусоидальный сигнал равняется нулю. Положительный эффект в повышении быстродействия. Результат определяют за время меньшее, чем полупериод колебаний исследуемого сигнала, что важно при обработке сигналов на инфранизких частотах. 2 ил.The invention relates to the field of measurement technology and is intended to determine the constant component in a harmonic signal in the analysis of its characteristics. The goal is to increase performance. The essence of the invention: generate an additional sinusoidal signal with a period of the signal under study, phase out one signal relative to another so that they are in phase or out of phase, and the value of the DC component in the signal is determined by the instantaneous value of the studied harmonic signal at a time when the additional sinusoidal signal equals to zero. Positive effect in increasing speed. The result is determined in a time shorter than the half-period of oscillations of the signal under study, which is important when processing signals at infralow frequencies. 2 ill.
RU94019789/09A1994-05-301994-05-30Method for detection of constant constituent in harmonic signal
RU94019789A
(en)