公开(公告)号：US09900195B2

公开(公告)日：2018-02-20

申请号：US15172167

申请日：2016-06-03

Applicant: ABB TECHNOLOGY AG

Inventor： Yi Qin

IPC: H03D3/00 ,  H04L27/14 ,  H04L27/156 ,  H04L27/144

CPC classification number: H04L27/1566 ,  H04L27/144

Abstract: A method to determine the magnitude MA of a signal component with frequency ωA from a set of N digital samples of an input signal acquired at a sampling rate R, said input signal having a discrete spectral representation having n bins with frequencies ω1, . . . , ωn and corresponding magnitudes M1, . . . , Mn, the spectral representation being derivable from the input signal using a transform, involving choosing an extraction bin with index kε[1, . . . , n] and frequency ωk≠ωA from the spectral representation; determining a magnitude Mk of this extraction bin; determining an allocation factor indicating a portion Mks of a sinusoidal signal with frequency ωA and unity magnitude that is allocated to the extraction bin when the transform is applied to the sinusoidal signal to generate a spectral representation out of the sinusoidal signal; and determining the magnitude MA of the signal component from the magnitude Mk of the bin in combination with the factor.

公开(公告)号：US20160359650A1

公开(公告)日：2016-12-08

申请号：US15172167

申请日：2016-06-03

Applicant: ABB TECHNOLOGY AG

Inventor： Yi Qin

IPC: H04L27/156

CPC classification number: H04L27/1566 ,  H04L27/144

Abstract: A method to determine the magnitude MA of a signal component with frequency ωA from a set of N digital samples of an input signal acquired at a sampling rate R, said input signal having a discrete spectral representation having n bins with frequencies ω1, . . . , ωn and corresponding magnitudes M1, . . . , Mn, the spectral representation being derivable from the input signal using a transform, involving choosing an extraction bin with index k∈[1, . . . , n] and frequency ωk≠ωA from the spectral representation; determining a magnitude Mk of this extraction bin determining an allocation factor indicating a portion Mks of a sinusoidal signal with frequency ωA and unity magnitude that is allocated to the extraction bin when the transform is applied to the sinusoidal signal to generate a spectral representation out of the sinusoidal signal; and determining the magnitude MA of the signal component from the magnitude Mk of the bin in combination with the factor.

Abstract translation: 一种从采样率R获取的输入信号的一组N个数字采样中确定具有频率ωA的信号分量的幅度MA的方法，所述输入信号具有具有频率为ω1的n个频带的离散频谱表示。 。 。 ，ωn和相应的幅度M1。 。 。 ，Mn，使用变换从输入信号导出的频谱表示，涉及选择索引k∈[1，...， 。 。 ，n]和频率ωk≠ωA; 确定该提取块的幅度M k，确定表示频率为ωA的正弦信号的一部分Mks的分配因子，以及当将该变换应用于正弦信号时分配给该抽取仓的单位幅度以产生频谱表示 正弦信号; 以及根据该因子从箱的幅度M k确定信号分量的幅度MA。