查询词典 harmonic analysis

Based on the three dimensional surface data of the face and skull, methods of geometric analysis on them are presented through these parameters with their numerical calculating methods under the landmarks of the anthropologist and anthropometrist are proposed,which is the foundation of the statistical model that will be used in the field; 4Geometric analysis methods that based on the approximation coefficients of spherical harmonic functions are proposed.

以三维面皮和颅骨数据为基础，分别给出了基于公安法医学标志点和人体测量学标志点的几何分析主要途径和方法，确定了几何分析的主要参量，并给出了相关的计算方法，为建立颅面统计模型奠定基础； 4基于球面调和函数的颅面形态学的几何分析方法。

Based on the method of modal analysis, it can be concluded that ANSYS has directive values to dynamic simulation and structural optimization of crossbeam, and the research has laid a foundation for the harmonic response analysis of the next step.

通过模态分析法，可以看出ANSYS对横梁的动态仿真和结构优化有一定的指导意义，也为下一步的谐响应分析提供依据。

Accordirg to the problem existing in tooth contact analysis of harmonic gear drive, a new method is proposed in this paper for tooth contact analysis base on the finite element method and a new thought for calculating the backlash is given also.

针对当前谐波传动接触状态分析中存在的问题及研究现状，本文建立了一种基于有限元进行谐波齿轮传动接触状态分析的新方法，并提出了计算齿间侧隙的新思路。

Second, the dyadic wavelet analysis and harmonic wavelet analysis and fractal analysis is presented.

其次，在指出基于Fourier变换的时频分析的缺点后，介绍了先进的二进小波分析和谐波小波分析、分形分析。

Umisheet2002 case study verifies the validity of this harmonic mapping algorithm. The comparison between the results obtained with inverse analysis method and incremental based software eta/DYNAFORM witnesses the efficiency and reliability of inverse analysis method using the proposed energy based initial solution algorithm.

UMISHEET' 2002一标准考题中，通过与增量模拟软件eta/DYNAFORM的比较，证明了采用基于弹簧系统能量理论的调和映射思想来求解反向模拟法初始域具有较好的适用性，同时验证了反向模拟法较为可靠的计算结果及较高的计算效率。

Based on the modem FEM with the dynamic substructure method, itd dynamic equation is established with almost no limits to DOFs of the system, in which the left side is the first approach of the nonlinear system and the right side is the excitation and coupling nonlinear pseudo forces. The modal analysis method is used to get the eigen solution to the reduced linear homogeneous dynamic differential equation. When the system is excited by the harmonic excitation at the right side of the equation, the nonlinear dynamic response can be calculated by the numerical method to give quantitative analysis.

基于近代有限元和子结构模态综合法的动力学建模方法，获得非线性系统动力学微分方程，其自由度几乎没有限制，对左端首次近似齐次方程进行模态分析，选取对响应有贡献的部分本征对，同样对右端激励和非线性伪力作模态变换，得到减缩后非线性系统耦合动力学微分方程。

In this paper, a shunt APF topology with cascade multilevel converter based on Carrier Phase Shifted PWM is presented. The systematic analysis of the harmonic and reactive power detection, AC side and DC side control, system parameter design and so on is done. The simulation study is carried out.imulation shows the APF system is of fast dynamic response and good compensation. Theory analysis and experimental system is feasible..

因此，本文将二者结合起来，提出了基于载波相移PWM技术的级联型多电平变流器并联APF系统的电路拓扑结构，并在谐波及无功检测、交直流控制策略和系统参数设计等方面进行了系统的分析，在此基础上进行了仿真研究。

Based on analysis of the features of three-phase four-line power supply system and nonliear load current harmonic pollution,compensation method of simultaneously compensating voltage sag and synthetic power quality of load low-voltage of harmonic current was proposed,and corresonding hybrid unified power quality compensator was also designed.

通过对三相四线制供电系统的特点和非线性负载电流谐波污染分析，提出了可同时补偿电压跌落、谐波电流的负载端低压综合电能质量补偿方法，并设计了对应的混合型低压电能质量综合补偿器。

This thesis attempts to make a profound and thorough analysis on the 24 Preludes and Fugues by Bentzon and summarize its harmonic bases from the following three aspects: mode and tonality; chord structure; and harmonic process.

本文就本特松第一套《二十四首前奏曲与赋格》进行了深入细致的研究，并从以下三方面对其和声基础进行归纳总结：一、调式、调性，二、和弦结构，三、声部进行。

By combining graph theory with loop current method for circuit network analysis, the incidence matrix between coil branch currents and one-phase winding loop currents are established, from which the normalized and unified programming approach is performed to phase harmonic leakage inductance calculation. Some calculated inductances are given and qualitative analysis is carried out.

仿照图论结合回路电流法分析电路网络的过程，列写了表示线圈支路电流与一相绕组回路电流间的关联矩阵，用规范统一的编程方法计算各相绕组间的谐波漏感，并对其中几个电感值进行了定性分析。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。