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    • 61. 发明申请
    • SYSTEM AND METHOD FOR MONITORING AN OPERATING CONDITION OF AN ELECTRICAL DEVICE WHEN IN OPERATION
    • WO2019158751A4
    • 2019-08-22
    • PCT/EP2019/053964
    • 2019-02-18
    • FARADAY PREDICTIVE LIMITED
    • BATES, ANDREWBOULTON, WilliamBANNISTER, MylesALFEIRAN, BranWALKER, Geoffrey
    • G01R23/20G01R23/16G01R31/34H02H3/52H02H7/08
    • Disclosed is an electrical condition monitoring system that is connectable to an electrical device for monitoring the electrical device when in operation, wherein: (i) the electrical condition monitoring system includes (a) a sensing arrangement for temporally sensing an electrical supply to and/or from the electrical device and generating corresponding sensed data; (b) a data processing arrangement that is configured to process the sensed data to generate a corresponding temporally-changing Fourier spectrum including signal harmonic components and to process temporal changes in magnitudes and frequencies of the signal harmonic components to generate analysis data; and (ii) a user interface is configured for user entry of input for analyzing the analysis data and the data processing arrangement is configured to analyze the analysis data based on the input to obtain information indicative of operating condition of the electrical device; characterized in that: (iii) the data processing arrangement is operable to: identify at least one local maximum corresponding to a phenomenon on the temporally-changing Fourier spectrum; calculate locations on the temporally-changing Fourier spectrum where the same phenomenon appears to create a family of possible local maxima; identify a significant local maximum from the family of possible local maxima corresponding to the phenomenon and generate the analysis data from a magnitude of the significant local maximum; generate a real-time model of the electrical device based on the analysis data; and compare the real-time model with one or more stored models to generate information indicative of operating condition of the electrical device.
    • 63. 发明申请
    • SYSTEM AND METHOD FOR REPRESENTING A MULTI-TONE SIGNAL
    • 用于表示多音信号的系统和方法
    • WO2010142811A3
    • 2011-04-14
    • PCT/EP2010058310
    • 2010-06-14
    • NMDG NVVANDEN BOSSCHE MARC
    • VANDEN BOSSCHE MARC
    • G01R23/20G01R27/28G01R31/28
    • G01R13/0272G01R27/28
    • The present invention is related to a system (1) for determining a representation of a multi-tone signal (2) comprising a plurality of phase coherent tones, at least two of said phase coherent tones being modulated by a modulating signal, said system comprising an input (3) for applying the multi-tone signal (2), phase coherent mixing means (5) for demodulation in connection with data acquisition means (6) for digitization, said mixing means and data acquisition means arranged for being fed with the multi-tone signal and with a reference signal (8) comprising said phase coherent tones, each pair of phase coherent tones having a fixed phase difference, whereby the data acquisition means is arranged for being triggered by a trigger signal (4) for yielding a representation of said modulation signals with fixed delay, processing means (7) arranged for receiving digital signals output from the data acquisition means and for comparing phase information of a downconverted tone of the multi-tone signal after demodulation with phase information derived from the corresponding tone of the demodulated reference signal and further arranged for controlling the phase coherent mixing means for sequential downconversion, such that a representation of said multi-tone signal can be determined.
    • 本发明涉及一种用于确定包括多个相位相位色调的多音调信号(2)的表示的系统(1),所述相位相干色调中的至少两个被调制信号调制,所述系统包括 用于应用多音调信号(2)的输入(3),用于与用于数字化的数据获取装置(6)进行解调的相位相干混合装置(5),所述混合装置和数据获取装置被配置为馈送 多音调信号和具有包括所述相位相位色调的参考信号(8),每对相位相位色调具有固定的相位差,由此数据采集装置被布置成由触发信号(4)触发,以产生 表示具有固定延迟的所述调制信号,处理装置(7)被布置成用于接收从数据获取装置输出的数字信号,并用于比较多转到 在从解调参考信号的相应色调导出的相位信息进行解调之后,进一步被布置为控制用于顺序下变频的相位相位混合装置,使得可以确定所述多音调信号的表示。
    • 67. 发明申请
    • METHOD OF DETERMINING THE HARMONIC AND ANHARMONIC PORTIONS OF A RESPONSE SIGNAL OF A DEVICE
    • 确定器件响应信号的谐波和非线性部分的方法
    • WO2008056285A1
    • 2008-05-15
    • PCT/IB2007/054206
    • 2007-10-16
    • NXP B.V.LUTZ, Josef
    • LUTZ, Josef
    • H04R29/00G01R23/173G01R23/20
    • G01R23/20H04R29/001
    • A method of determining the harmonic and anharmonic portions of a response signal (RS) of a device (2), e.g. an electro-acoustic or electric device, comprises the steps of supplying an input signal (IS) to the device (2) causing the device (2) to respond with a response signal (RS), wherein the input signal (IS) is a sinusoidal signal having a continuously increasing or decreasing frequency (f), capturing the response signal (RS), transforming the captured response signal (RS) from the time space into the phase space and analyzing the phase space transformed response signal (TRS) in respect of its harmonic and/or anharmonic portions or establishing reference functions when defining the input signal (IS) and analyzing the response signal (RS) by Fourier transformations carried out by numerical integrations of the reference functions.
    • 确定装置(2)的响应信号(RS)的谐波和非调谐部分的方法,例如, 电声或电子装置包括以下步骤:向设备(2)提供输入信号(IS),使设备(2)响应于响应信号(RS),其中输入信号(IS)为 具有连续增加或减小的频率(f)的正弦信号,捕获响应信号(RS),将捕获的响应信号(RS)从时间空间变换到相位空间中,并且相对于相位空间变换的响应信号(TRS)分析 的谐波和/或非调谐部分,或者在定义输入信号(IS)时建立参考功能,并通过参考功能的数字积分进行的傅里叶变换来分析响应信号(RS)。
    • 68. 发明申请
    • METHOD FOR INSTANTANEOUSLY DETERMINING RATES OF DISTORTION OF SIGNALS ON AN AC ELECTRICAL NETWORK, AND ASSOCIATED DEVICE
    • 用于瞬时确定交流电网上信号失真速率的方法及相关设备
    • WO2008000990A2
    • 2008-01-03
    • PCT/FR2007051427
    • 2007-06-12
    • AIRBUS FRANCEWEBER MARCPLO AYMERICBLACHE DENIS
    • WEBER MARCPLO AYMERICBLACHE DENIS
    • G01R23/20
    • G01R23/20
    • Method for instantaneously determining rates of distortion of signals on an ac electrical network, and associated device. The present invention addresses the need for real-time calculation of an instantaneous value of discrete harmonic rate, adapted in particular for an electrical network producing a variable-frequency signal. In a general manner, the invention proposes a method for instantaneously determining rates of distortion on variable-frequency signals, and an associated device, in which a rate of harmonic distortion is calculated over a time window that is as short as possible, corresponding to the duration of a period of the fundamental of a relevant signal. Advantageously, one seeks to precisely determine the value of the frequency of the signal whose DHT is to be calculated, and an iteration is carried out for certain measurements made during a given calculation for the calculation of the DHT on subsequent signals.
    • 用于瞬时确定交流电网络和相关设备上的信号失真率的方法。 本发明解决了实时计算离散谐波速率的瞬时值的需要,特别适用于产生可变频率信号的电网。 通常,本发明提出了一种用于瞬时确定可变频率信号的失真率的方法,以及相关联的设备,其中在尽可能短的时间窗口上计算谐波失真的速率,该时间窗口对应于 相关信号基础的持续时间。 有利的是,寻求精确地确定要计算其DHT的信号的频率的值,并且对于在给定计算期间进行的某些测量进行迭代,以用于计算后续信号上的DHT。