小波函数是具有时域和频域良好局部化特性的函数,理论上可以用于非整次谐波的检测。
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.
采用含有丰富谐波分量的窄脉冲电流作为励磁信号对非晶丝直接励磁,使传感器具有灵敏度高、响应快的优点。
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.
这表明了小波变换对于非整次谐波的检测和分析是可行的,从而为谐波的精确检测提供了有效的手段。
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.
这种方法首先对非语言声音信号进行谐波分析,然后对所得到的时变振幅与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.
与经典的最小二乘法相比,共优点是能有效地抑制非整次谐波误差对模型参数估计的影响。
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.
利用FFT变换进行谐波分析,非整周期采样会带来较大的误差。
Non integer period Sampling leads to large error in harmonic analysis by FFT.
本文研究了高次谐波产生及非谐振子模型两种非线性光学系统中存在光场振幅立方压缩的条件。
The conditions for the production of amplitude-cubed squeezing in higher-order harmonic generation and an anharmonic oscillator are studied.
针对现有电力系统非整数次谐波分析法的不足,提出了一种改进的希尔伯特振动分解(HVD)方法。
An improved Hilbert vibration decomposition (HVD) method was introduced to the non-integer harmonic analysis in electrical power system.
本文研究非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.
数值计算得到了转子系统在特定参数范围内的分叉图,系统存在亚谐波、概周期和混沌等非协调运动。
The diagrams of bifurcation, sub-harmonic, quasi-periodic and chaotic motion with typical parameters are numerically created.
快速傅里叶变换在非同步采样和非整数周期截断的情况下存在较大误差,无法获得较精确的间谐波参数值。
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.
最后,对于非整数次谐波的测量用改进算法来减少频谱泄漏,仿真结果表明,改进算法能较大的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.
谐波理论分析对于非正弦交流电路的研究具有重要的理论和实际意义。
The analysis of modulation wave theory has very important theoretical and actual meaning for studying non sine alternating current.
讨论了气体介质的非均匀性对飞秒激光高次谐波产生过程的可能影响。
The possible influence of nonuniform gaseous medium on high order harmonics generated by femtosecond laser is discussed.
在一些电路教材中常把带滤波器的整流电路作为一个实例,用以讲述用傅立叶级数的谐波分析方法来求解非正弦电路。
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.
本文方法克服了以往的困难,成功地解决了对称分布非高斯噪声背景下和谐波信号中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.
本文论述了对非斜槽异步电机高次谐波杂散损耗的计算方法。
This paper describes a method for evaluating harmonic stray losses in non-skewed induction motors.
这些方法不能分析非整次谐波,不能区分一次谐波和偏心分量,并且含有较大的非线性误差。
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.
针对旋转机械非平稳信号的特点,提出采用谐波小波滤波对现场采集的振动信号进行故障诊断的新方法。
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.
即使在三相正弦激励的作用下,三相线电流也将发生非正弦畸变,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.
采用非模方法,得到了扰动量的剪切傅里叶谐波分量随时间演化的方程组,并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.
与FFT和幅值检测法相比,该方法能消除fft算法的频谱泄露,提高了谐波检测的精度,且适用于含有非整数次谐波的信号。
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.
随着越来越多的非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.
以开关电源驱动的超声电机为了避免激发出电机的非工作模态振动,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.
将智能化激光超短脉冲宽度测量仪与非共线二次谐波相关仪相结合,可获得0.1微微秒或更优的时间分辨率。
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.
理论分析和实验结果初步表明了注入高次谐波电流非接触供电方法的可行性。
Finally, experiment results are given. The results show the feasibility of the harmonic injection method.
在分析与探讨脉动轴向力作用下梁的参数共振问题时,本文取四种边界条件来分析第二阶次谐波参数共振的稳定区域,确定了零解与非零解的稳定性。
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.
在分析与探讨脉动轴向力作用下梁的参数共振问题时,本文取四种边界条件来分析第二阶次谐波参数共振的稳定区域,确定了零解与非零解的稳定性。
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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