查询词典 oscillating series

Improve the accuracy of the initial rotor position estimator by using the Fourier series expansion.

在永磁同步的马达启动方面，则透过送出不同向量空间角度的定子电压向量脉冲所量测到的d轴定子电流的大小来估测转子的初始位置，并利用d轴定子电流在空间向量角度以2π为周期的特性，应用傅立叶级数分析做曲线拟合的方式提高转子位置估测解析度，以提高转矩/电流比节省不必要的功率浪费。

Aiming at reducing cogging force in tubular permanent magnet linear motors, an analytical method based on energy method and Fourier series expansion was adopted, the expression of cogging force was deduced which is related with structure parameters of the motor.

为削弱圆筒永磁直线电机的齿槽力，采用了一种基于能量法和傅里叶分解的解析分析方法，推导出了圆筒直线电机与结构参数有关的齿槽力表达式。

By using the Fourier series expansion, approximate analytical propagation equations of laser beams through a paraxial optical ABCD system with different apertures are derived.

用傅立叶级数展开法研究光束通过有光阑限制的近轴ABCD光学系统的传输特性，导出了光阑透射率函数不同时的传输公式。

Based on the energy method and Fourier series expansion the general expression of cogging torque was obtained and the harmonic components of cogging torques were analyzed under both ideal and non-ideal conditions.

针对永磁电机中非理想因素对齿槽转矩的影响，基于能量法和傅里叶级数解析方法给出了齿槽转矩的一般表达形式，并分析了理想及非理想条件下齿槽转矩的谐波成分。

For the solar radiation model, the error of Wu-model during the expansion of Fourier series is modified. Based on Mallat algorithm and Daubechies-type wavelets, a new wavelet transform model is presented for continuous solar radiation.

在太阳能辐射模型研究方面，对吴赣昌模型进行了修正，并基于Mallat算法和Daubechies系列小波，建立了连续太阳能辐射的小波变换模型。

The intensity of grating diffraction spectrum is obtained by the Fourier series expansion of the transmissivity function. Finally, the design feasibility is analyzed by comparing the minimum signal spectral intensity with the maximal spectral intensity of the background light and the noise intensity.

通过对透射率函数的傅立叶级数展开，得到光栅衍射谱线的强度，对信号光谱线的最小强度、背景光谱线的最大强度和噪声强度的比较，得到设计的可行性。

In a polar coordinate system, the concept of image area extension is established, and the uniqueness problem is discussed for an image whose Fourier series expansion of grey only contains the 0th-order and 1th-order terms.

同时本文以极坐标系表示图像平面，建立了图像区域延拓的概念，讨论了由灰度关于极坐标系角度坐标的富里叶展开式仅含零阶和一阶项之图像恢复物体外形的唯一性问题。

The gray digital images can be regarded as matrixes with the integer data type. In each row of matrix, the integer data sequence can be represented by the Fourier series expansion and it can be regarded as the initial condition of the diffusion equation.

灰阶数位影像可以视为矩阵的整数资料型态，我们利用傅立叶级数，将矩阵中每一列的整数资料以傅立叶级数展开，当作扩散方程式的起始条件。

The Fourier transform is an integral expression for a Fourier series applied to an infinitely long signal.

傅里叶变换式是对博里叶级数的一种积分表达式。

Aapproximation of Fourier inverse integral using Fourier transform approximation for amplitude of harmonics in a finite Fourier series summation.

富氏级数中之谐波成份以富氏转换近似并以有限级数和近似富氏逆转换。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。