傅里叶级数

一种基于傅里叶级数的E脉冲识别波形综合方法

An E-pulse Waveform Synthesis Method for Target Identification Using Fourier Series

Matlab符号计算在傅里叶级数分析中的应用

Application of Symbolic Calculation of Matlab on Fourier Series Analysis

利用傅里叶级数理论，给出了一种级数形式的数学模型，并利用MATLAB进行了仿真验证。

By using Fourier series , one series mathematic model is given and then validated by the MATLAB program .

对动应力进行傅里叶级数逼近，取前N项傅里叶级数为动应力数值解的近似值，进而分析频域特性。

The dynamic stress is approached by Fourier series . The first N terms of Fourier series are taken as the approximate value of the dynamic stress figure solution , and furthermore , the frequency field characteristics are analyzed .

Gibbs现象最早源于分段连续周期函数的传统傅里叶级数部分和，这种现象严重制约着实际的工程应用。

The Gibbs phenomenon originated from the partial sums of Fourier series for non-periodical piecewise continuous function , which affected seriously the series in engineering applications .

利用复变函数法、多极坐标及傅里叶级数展开技术求解了二维直角平面介质边界固定半圆形夹杂对稳态入射平面SH波的散射问题。

Complex function method , multi-polar coordinate and Fourier series expansion technology are used here to study scattering of fixed half circular inclusion located at horizontal boundary of a right-angular planar space to steady incident planar SH-wave .

采用直流和交流量分离的方法，利用傅里叶级数，获得输出跨导对无杂波动态范围（SFDR）的影响的近似公式。

The approximate formula for influence of output transconductance on spurious free dynamic range ( SFDR ) is obtained using Fourier series .

在此基础之上，根据历史灾情损失的时间序列统计数据，运用spss软件对傅里叶级数一般模型进行拟合，从而得到灾情预测模型的拟合方程。

On the above basis , according to the statistic data time series of historical disaster losses and by using SPSS software to fit the Fourier series general model , this study will obtain the fitting equation of disaster prediction model .

然后针对逆变器-电动机系统，利用贝塞尔函数和傅里叶级数理论，分别对单相二阶SPWM逆变器和三相SPWM逆变器的输出电压谐波的产生、大小和分布进行了细致而具体的分析和计算。

According to Bessel function and Fourier series theory , generation , magnitude and distribution of voltage harmonic generated by single-phase two-level SPWM inverter and three-phase SPWM inverter are analyzed and calculated particularity and concretely in allusion to inverter-motor system .

因此，本文也尝试将该方法分别应用到一维和二维分数阶傅里叶级数中Gibbs现象的消除，并给出了一些数值实例，实验结果表明了IPRM是一种消除Gibbs现象的有效、精确的方法。

Therefore , IPRM is also applied to the elimination of Gibbs phenomenon for one-dimensional and two-dimensional fractional Fourier series , and the numerical experiments results show the effectiveness and accuracy of IPRM .

研究表明，傅里叶级数加补充项的方法求解弹性地基结构甚至非线性问题的无拉力Winkler弹性地基结构比较有效而且普遍适用。

It was shown by investigation that the method of employing Fourier series with supplementary terms is an efficient and generally applicable approach for solving elastic foundation structures even for the weak nonlinear problems of tensionless Winkler foundation structures .

本文试图用信号线性逼近的方法和正交分解的理论导出周期序列离散傅里叶级数DFS关系式。为在计算机上做傅里叶级数的分解，需要对连续信号进行抽样，然后按离散傅里叶级数进行分解。

In this paper the expression of discrete Fourier series ( DFS ) for periodic sequences has been deduced from periodic sequence linear approximation and orthogonal decomposition . In order to analyzing digital signals with the aid of computers , it is necessary to use Fourier Series of discrete form .

傅里叶级数的曲线仿真应用及算法

The application and algorithm of curve simulation based on Fourier series

输液管道临界流速的傅里叶级数法

Fourier series method for critical flow velocity of pipes conveying fluid

傅里叶级数部分和逼近和函数的动态演示

Dynamic Demonstration of Fourier Series Partial Sum Approaching Sum Function

基于傅里叶级数的非线性学习控制算法

Research of a Nonlinear and Learning Control Algorithm Based on Fourier Series

薄板弯曲问题的复合傅里叶级数方法

Composite Fourier series method in the analysis of thin plates

栓流系统动态参数关系的傅里叶级数表征

Characterizing the Relationship Between Dynamic Parameters with Fourier Series

用有限项傅里叶级数三维趋近周期性方波信号

Approaching to periodic square wave signal on three dimension with finite Fourier series

高等数学中的素质教育&傅里叶级数的教学体会

On the Qualities Education in the Higher Mathematics Teaching

周期函数的最小正周期在傅里叶级数计算中的作用

The Effect of Minimum Positive Period of Periodic Function Fourier Series ' Calculation

傅里叶级数的求和理论与方法（英文）

On Summability Theory and Method of Fourier Series (ⅱ)

周期序列正交分解和离散傅里叶级数

Orthogonal Decomposition of Periodic Sequences and Discrete Fourier Series

振动信号处理中傅里叶级数的形象化分析

Analysis of Fourier Series Applied to Vibration Signals

离散时间周期序列的离散傅里叶级数表示

Discrete Fourier series representation of discrete-time periodic sequences

然后根据傅里叶级数变换，将求得的电流展开成不同频率的分量；

Then , with Fourier transform the current is decomposed to different frequency components .

关于周期函数的傅里叶级数的一个注记

The Notes on Fourier Series of Periodic Function

本文用二维傅里叶级数分析某些目标的方向特性。

The directional characteristic of some objects is analysed by means of 2D Fourier series .

利用傅里叶级数求解机器运动微分方程

Solving machine movement equation with Fourier series

这通常是由于反卷运算的采用的模型自身造成，例如有穷傅里叶级数等。

This is caused by the deconvolution model itself , for example finite Fourier series .