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METHOD FOR SPECTRAL ANALYSIS OF PERIODIC MULTI-FREQUENCY SIGNALS REPRESENTED BY DIGITAL READINGS
METHOD FOR SPECTRAL ANALYSIS OF PERIODIC MULTI-FREQUENCY SIGNALS REPRESENTED BY DIGITAL READINGS
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机译:数字读数表示的周期多频信号的频谱分析方法
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FIELD: physics.;SUBSTANCE: analysed a(tj) and reference sine bsin0(ti) and cosine bcos0(ti) signals are given by readings of instantaneous values for the same time moments tj=t1, t2,…, tN, and the sine bsin0(ti) and cosine bcos0(ti) reference signals for the given frequency ω0k are simultaneously determined. The sine Qsink and cosine Qcosk area under the current versus voltage curve is determined for common solution points of a(bsin0) and a(bcos0). Values of amplitude Amk, phase φk and frequency ωk=ω0k are also simultaneously recorded. The signal for setting the next frequency ω0k+Δω is then transmitted. All operations for determining Amk and φk are repeated until achieving ω0k=ωn.;EFFECT: cutting on time required for determining amplitude, frequency and phase of separate signal components.;2 dwg, 3 tbl
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机译:领域:物理学。;实体:分析a(t j Sub>)和参考正弦b sin0 Sub>(t i Sub>)和余弦b cos0 Sub>(t i Sub>)信号通过读取相同时刻t j Sub> = t 1 Sub>,t < Sub> 2 Sub>,…,t N Sub>和正弦b sin0 Sub>(t i Sub>)和余弦b cos0同时确定给定频率ω 0k Sub>的 Sub>(t i Sub>)参考信号。对于a(b sin0 Sub>)和a(b sin0 Sub>)的公共解点,确定电流-电压曲线下的正弦Q sink Sub>和余弦Q cosk Sub>面积。 (b cos0 Sub>)。同时记录振幅A mk Sub>,相位φ k Sub>和频率ω k Sub> =ω 0k Sub>的值。然后发送用于设置下一个频率ω 0k Sub> +Δω的信号。重复所有确定A mk Sub>和φk的操作,直到达到ω 0k Sub> =ω n Sub> 。;效果:缩短确定幅度所需的时间,分开的信号分量的频率和相位。; 2 dwg,3 tbl
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