• 函数具有时域和频域良好局部化特性的函数,理论上可以用于谐波检测

    The wavelet function is such a function which possesses good localization characteristics, so theoretically it can be applied to the detection of non-integer harmonics.

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  • 采用含有丰富谐波分量脉冲电流作为励磁信号晶丝直接励磁,使传感器具有灵敏度响应优点。

    The magnetic sensor has characteristics of high sensitivity and quick response due to the amorphous wires excited directly by sharp pulse train current containing amount of harmonic signals.

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  • 表明小波变换对于整次谐波检测和分析可行从而谐波的精确检测提供了有效手段

    It proves that it is feasible to apply the wavelet transformation to the detection of non-integer harmonics, thus, an effective means is provided for accurate detection of harmonics.

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  • 这种方法首先对语言声音信号进行谐波分析然后所得到的时变振幅频率等声音信号参数进行分段线性化

    This technique performs harmonic analysis of the nonspeech audio signals and then the resulted attributes including time-varying amplitude and frequency functions are piecewisely linearized.

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  • 经典最小二乘法相比,共优点有效地抑制整次谐波误差模型参数估计影响

    Comparing with the least squares method, the advantage of this approach in that the influence of non-integer harmonic errors on the estimate of model parameters has been effectively restricted.

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  • 利用FFT变换进行谐波分析周期采样会带来较大误差

    Non integer period Sampling leads to large error in harmonic analysis by FFT.

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  • 本文研究了高次谐波产生谐振子模型两种线性光学系统存在光场振幅立方压缩条件

    The conditions for the production of amplitude-cubed squeezing in higher-order harmonic generation and an anharmonic oscillator are studied.

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  • 针对现有电力系统整数次谐波分析法的不足,提出改进希尔伯特振动分解(HVD)方法

    An improved Hilbert vibration decomposition (HVD) method was introduced to the non-integer harmonic analysis in electrical power system.

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  • 本文研究高斯有色噪声中的谐波恢复问题

    The problem of concern here is the harmonic retrieval in colored non Gaussian noise.

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  • 数值计算得到了转子系统特定参数范围内的分叉,系统存在亚谐波概周期混沌协调运动

    The diagrams of bifurcation, sub-harmonic, quasi-periodic and chaotic motion with typical parameters are numerically created.

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  • 快速傅里叶变换同步采样整数周期截断的情况存在较大误差无法获得精确谐波参数

    The fast Fourier transform (FFT) will bring on higher error under nonsynchronous sampling and truncated non-integral period, thus more accurate interharmonic parameter values cannot be obtained.

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  • 最后对于整数谐波测量改进算法减少频谱泄漏,仿真结果表明,改进算法较大提高参数测量的精度

    Finally, an improved algorithm for fractional harmonic analysis is used to reduce the leakage, the result of the simulation shows it can heighten the precision of the measure of the parameter.

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  • 谐波理论分析对于正弦交流电路研究具有重要理论实际意义

    The analysis of modulation wave theory has very important theoretical and actual meaning for studying non sine alternating current.

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  • 讨论了气体介质均匀性飞秒激光谐波产生过程可能影响

    The possible influence of nonuniform gaseous medium on high order harmonics generated by femtosecond laser is discussed.

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  • 一些电路教材中常把滤波器整流电路作为一个实例,用以讲述用傅立叶级数谐波分析方法来求解正弦电路。

    In some circuit textbooks the rectifier circuit with the filter has been used as an example to illustrate the harmonic analysis of nonsinusoidal circuit adopted Fourier series.

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  • 本文方法克服了以往的困难,成功地解决对称分布高斯噪声背景下谐波信号存在二次相位耦合时的谐波恢复问题。

    This method succeeds in harmonic retrieval in colored non Gaussian noise, especially when the noise is symmetrically distributed or there exist quadratic phase coupled cosinusoids.

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  • 本文论述了对斜槽异步电机谐波杂散损耗计算方法

    This paper describes a method for evaluating harmonic stray losses in non-skewed induction motors.

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  • 这些方法不能分析谐波不能区分谐波偏心分量,并且含有较大线性误差

    These methods can't be used not only to analyze the non integral order harmonics, but to distinguish the eccentricity and the first harmonic, and contain the lager nonlinear error.

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  • 针对旋转机械平稳信号特点,提出采用谐波小波滤波现场采集振动信号进行故障诊断方法

    A new method of fault diagnosis of in-situ sampled vibration signals is introduced for the non-stationery signals of rotating machines by using the harmonic wavelet filtering.

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  • 即使三相正弦激励的作用下,三相线电流发生正弦畸变产生谐波电流

    Even if it worked with three-phase sine, three-phase line current would have non-sine aberrance and produce harmonic wave-electricity.

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  • 采用方法得到扰动的剪切里叶谐波分量随时间演化方程组对方程组进行了数值分析。

    Using the Nonmodal approach, the temporal evolution equations with Spatial Fourier Harmonics for the disturbed quantities are obtained, and have been studied numerically.

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  • FFT值检测法相比方法消除fft算法频谱泄露提高谐波检测精度,且适用含有整数次谐波的信号。

    Comparing with the FFT and the amplitude measure arithmetic, the novel method can avoid the spectrum leakage and fence effect in ideal extent and improve the precision of harmonics measurement.

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  • 随着越来越多的线形电力负荷投入使用,使城市电网中的谐波分量猛增。

    The harmonic component in city power grids has considerably increased since more and more nonlinear power loads turn up in the grids.

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  • 以开关电源驱动超声电机为了避免激发出电机的工作振动需要串联电感滤除高次谐波

    To avoid the vibration under non-working modes, inductors should be connected in series to the USM, which is driven by switched-supply power.

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  • 智能化激光脉冲宽度测量共线二次谐波相关仪相结合,获得0.1微微秒时间分辨率

    An intelligent instrument used for measuring the width of ultrashort laser pulse is presented. Combining with a noricollinear SHG correlator, time resolution of 0.1 psec or better can be obtained.

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  • 理论分析实验结果初步表明注入高次谐波电流接触供电方法可行性

    Finally, experiment results are given. The results show the feasibility of the harmonic injection method.

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  • 分析探讨脉动轴力作用下参数共振问题时,本文取四种边界条件来分析第二阶次谐波参数共振稳定区域,确定了零解与零解的稳定性。

    This paper investigates the subharmonic parametric resonance problems of a symmetric orthotropic laminated rectangular plate with simply supported edges by the use of the singularity theory.

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  • 分析探讨脉动轴力作用下参数共振问题时,本文取四种边界条件来分析第二阶次谐波参数共振稳定区域,确定了零解与零解的稳定性。

    This paper investigates the subharmonic parametric resonance problems of a symmetric orthotropic laminated rectangular plate with simply supported edges by the use of the singularity theory.

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