RU2008121139A - METHOD FOR DETERMINING SINUSOIDAL SIGNAL PARAMETERS - Google Patents
METHOD FOR DETERMINING SINUSOIDAL SIGNAL PARAMETERS Download PDFInfo
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- RU2008121139A RU2008121139A RU2008121139/28A RU2008121139A RU2008121139A RU 2008121139 A RU2008121139 A RU 2008121139A RU 2008121139/28 A RU2008121139/28 A RU 2008121139/28A RU 2008121139 A RU2008121139 A RU 2008121139A RU 2008121139 A RU2008121139 A RU 2008121139A
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- RU
- Russia
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- amplitude
- signal
- frequency
- phase
- quadrature components
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract 3
- 238000001228 spectrum Methods 0.000 claims abstract 8
- 230000014509 gene expression Effects 0.000 claims abstract 2
- 230000009466 transformation Effects 0.000 claims 1
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Abstract
Способ определения параметров синусоидального сигнала на малых временных интервалах, включающий преобразование сигнала в цифровую входную последовательность, проведение синусного и косинусного преобразований Фурье для получения квадратурных компонент, преобразование квадратурных компонент в амплитуду и фазу сигнала, формирование амплитудно-частотного и фазочастотного спектров в заданном частотном диапазоне, нахождение максимума амплитудно-частотного спектра, определение в точке максимума амплитудно-частотного спектра частоты ω0 и амплитуды U0 синусоидального сигнала, определение в точке ω0 фазочастотного спектра начальной фазы синусоидального сигнала, отличающийся тем, что после проведения синусного и косинусного преобразований Фурье проводят коррекцию квадратурных компонент, получая новые квадратурные компоненты, после чего новые квадратурные компоненты преобразуют в амплитуду и фазу сигнала, при этом новые квадратурные компоненты А′(ω) и В′(ω) корректируют тремя функциональными зависимостями R1(ω), R2(ω), R3(ω) в соответствии с выражениями ! ! где ! ! ! ! ! черта сверху означает суммирование по индексу n, ! Еn - выборка измеряемых данных, полученная на интервале времени Т с дискретностью Δt; ! U - амплитуда сигнала; ! ω - круговая частота сигнала; ! tn - момент времени.A method for determining the parameters of a sinusoidal signal at small time intervals, including converting the signal to a digital input sequence, performing sine and cosine Fourier transforms to obtain quadrature components, converting quadrature components into the amplitude and phase of the signal, generating amplitude-frequency and phase-frequency spectra in a given frequency range, finding the maximum of the amplitude-frequency spectrum, determining at the maximum point of the amplitude-frequency spectrum of the frequency 0 and the amplitude U0 of the sinusoidal signal, determining the phase phase spectrum at the point ω0 of the initial phase of the sinusoidal signal, characterized in that after the sine and cosine Fourier transforms, the quadrature components are corrected to obtain new quadrature components, after which the new quadrature components are converted into the amplitude and phase of the signal while the new quadrature components A ′ (ω) and B ′ (ω) are corrected with three functional dependencies R1 (ω), R2 (ω), R3 (ω) in accordance with the expressions! ! where! ! ! ! ! the bar above means summation over the index n,! En is a sample of the measured data obtained on the time interval T with a resolution of Δt; ! U is the signal amplitude; ! ω is the circular frequency of the signal; ! tn is the moment in time.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2008121139/28A RU2008121139A (en) | 2008-05-26 | 2008-05-26 | METHOD FOR DETERMINING SINUSOIDAL SIGNAL PARAMETERS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2008121139/28A RU2008121139A (en) | 2008-05-26 | 2008-05-26 | METHOD FOR DETERMINING SINUSOIDAL SIGNAL PARAMETERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2008121139A true RU2008121139A (en) | 2009-12-10 |
Family
ID=41488903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2008121139/28A RU2008121139A (en) | 2008-05-26 | 2008-05-26 | METHOD FOR DETERMINING SINUSOIDAL SIGNAL PARAMETERS |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2008121139A (en) |
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2008
- 2008-05-26 RU RU2008121139/28A patent/RU2008121139A/en unknown
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