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    • 95. 发明申请
    • PHASE ESTIMATING METHOD FOR A DIGITAL SIGNAL SINUSOIDAL SIMULATION
    • 数字信号正弦模拟的相位估计方法
    • WO2007068861A2
    • 2007-06-21
    • PCT/FR2006051361
    • 2006-12-14
    • FRANCE TELECOMCOLLEN PATRICERAULT JEAN-BERNARDBETSER MICHAEL
    • COLLEN PATRICERAULT JEAN-BERNARDBETSER MICHAEL
    • G06F17/14G10L19/02
    • G06F17/141
    • The invention relates to a method for estimating the sinusoidal component of a non-stationary digital signal (x(n)) comprising stages consisting in segmenting (a1) said signal into time frames, in estimating the frequency (a3) of said sinusoidal component, in spectrally analysing (a2) the time frame weighted by an analysis window (w(n)) in such a way that it makes it possible to obtain the spectrum frequency peak value of said signal corresponding to said sinusoidal component and in carrying out a first phase estimation (a3) of formula (I) with respect to the sample (n) of the analysis window (w(n)) by using the argument of the thus obtained value, wherein said first phase estimation (a3) of formula (I) is corrected (a4) by a term corresponding to a polynomial of at least one degree in the estimated variable frequency, formula (II), between the beginning and the end of said analysis window (w(n)), wherein the coefficients of said polynomial depend thereon.
    • 本发明涉及一种用于估计非平稳数字信号(x(n))的正弦分量的方法,该方法包括以下步骤:在估计所述正弦分量的频率(a3)中将(a1)所述信号分段为时间帧, 在对由分析窗(w(n))加权的时间帧进行频谱分析(a2)中,使得有可能获得对应于所述正弦分量的所述信号的频谱峰值,并且执行第一 (I)的所述第一相位估计(a3)相对于所述分析窗口(w(n))的样本(n)的相位估计(a3) )在所述分析窗口(w(n))的开始和结束之间由与估计的可变频率公式(II)中的至少一度的多项式相对应的项来校正(a4),其中系数 所述多项式取决于此。
    • 99. 发明申请
    • CONTROL DEVICE OPTIMIZING COMPUTING INPUT SAMPLE OF DATA WITH DISCRETE FOURIER TRANSFORM ALGORITHM
    • 控制设备优化计算输入样本数据与离散傅立叶变换算法
    • WO2005071503A1
    • 2005-08-04
    • PCT/FI2005/000046
    • 2005-01-21
    • ABB OYLÖNN, Markus
    • LÖNN, Markus
    • G05B13/02
    • G06F17/141
    • An automatic control device (1) that comprises input means (21, 24) for inputting measured values (7) of cyclic voltage and/or current; computing means (21) for computing a parameter based on said values of voltage and/or current, and for comparing the computed parameter against a predefined condition; and initiating means (21, 23) for initiating a control function in response to the parameter meeting the predefined condition. The input means (21, 24) of the control device are arranged to input a predefined number of samples per one cycle; and said computing means (21) are arranged to compute the parameter with a discrete Fourier transform algorithm optimized based on fixed coefficients related to said predefined number of samples per cycle. The control device and the corresponding control method provide a significantly faster response time than the earlier general programmed solutions without increasing the related costs as much as the conventional digital signal processors.
    • 一种自动控制装置(1),包括用于输入循环电压和/或电流的测量值(7)的输入装置(21,24) 计算装置(21),用于基于所述电压和/或电流值来计算参数,并用于将所计算的参数与预定条件进行比较; 以及启动装置(21,23),用于响应于满足预定条件的参数来启动控制功能。 控制装置的输入装置(21,24)被布置成每一个周期输入预定数量的样本; 并且所述计算装置(21)被布置为使用基于与每个周期的所述预定数量的采样相关的固定系数优化的离散傅里叶变换算法来计算参数。 控制装置和相应的控制方法提供比早期通用编程解决方案更快的响应时间,而不会增加与常规数字信号处理器一样多的相关成本。