time harmonic

An adaptive sampling frequency tracking algorithm which adapt to realization of precise real time harmonic analysis is introduced.

提出了一种适于高精度实时电力谐波分析的自适应调整采样频率的电网频率跟踪算法。

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METHODS: The head was simplified to a two-layer conductive sphere and the single measurement channel of MIT was approximated to an axial symmetric electromagnetic model. The analytical solution of the model was deduced from analysis method of time harmonic electromagnetic field.

方法：将头颅近似为一个双层的导电球体，脑MIT单通道测量系统近似为由测量、激励线圈和球体组成的轴对称模型，采用时谐电磁场分析方法，推导出轴对称模型的解析解。

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At the same time, harmonic component of the system is abstracted through Instant Reactive Power Method, which can be smoothed by Integrated Learning Boost Converter Control.

同时，利用瞬时无功功率法分析系统谐波，并在谐波域内使用重复学习的控制方法，结合Boost变换技术，有效滤除系统谐波有功电流。

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As the first step, a variational function is derived from 3-D time harmonic field Maxwell equations and for X-cut Y propagation lithium niobate waveguide, the according variational function can also be gotten by a similar process.

本文首先推导了对于时谐场普遍问题的变分方程，进而对X切Y传的铌酸锂波导进行研究。

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The thesis introduces two kinds of real time harmonic and reactive current detection methods, which are base on instantaneous reactive power theory.

介绍两个基于瞬时无功功率理论的谐波及无功电流实时检测方法。

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Tikhonov regularization numerical method for recovering the shape of an obstacle from the information of time harmonic incident acoustic wave and far field pattern of the scattered wave with frequency in the resonance region is investigated.

用Tikhonov正则化方法数值求解由声波散射场的远场模式信息来再现散射物边界形状的反问题。

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The magnetic field integral equation ( MFIE) is formulated to study the electromagnetic scattering from Alpha-stable non-Gaussian metallic material surface with a time harmonic wave and a UWB pulse wave incidence.

基于磁场积分方程研究Alpha-stable非高斯分布的金属材料表面的时谐波、超宽带脉冲波的电磁散射特性。

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Deformation Due to Time Harmonic Sources in Micropolar Thermoelastic Medium Possessing Cubic Symmetry With Two Relaxation Times

具有立方对称性及两个弛豫时间的微极热弹性介质中调和时间源引起的变形

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Real Time Harmonic Monitoring System for Electric Railway

电气铁道谐波实时监测系统

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A harmonic oscillator with time dependent frequency is studied using double wave function theory.

用双波函数理论研究了频率含时的谐振子.

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Super-space Time Harmonic Function and One Class of Nonlinear Parabolic Equations

超空时调和函数与一类非线性抛物方程

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Variational perturbation calculation for hydrogen-like atoms in the small and time harmonic electric field ⅱ: the excited states ( 21 ± 1) and ( 32 ± 2)

弱时间简谐电场中类氢原子的变分微扰计算Ⅱ：激发态（21±1）和（32±2）

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After treatment of the test group, the acoustical parameters maximum phonation time ( MPT), frequency perturbation quotient ( FPQ), amplitude perturbation quotient ( APQ), ratio of harmonic to noise ( H/ N) objectively reflected improvement of voice quality.

试验组患者治疗前后的声时、频率微扰商、振幅微扰商、谐噪比声学参数也客观地反映了治疗后嗓音质量的提高。

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A set of one-dimensional regular integral equations is derived for calculating the dynamic response of elastic layer on stiff foundation under time harmonic surface vertical concentrated load. And the numerical solution of the integral equation is obtained.

导出了刚性基础上的弹性层在表面垂直集中简谐载荷作用下动力响应问题的一维非奇异积分方程组，并求得了数值解。

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The paper introduced a kind of time domain model for harmonic analysis of arc furnace.

文章介绍了一种用于电弧炉谐波分析的时域模型.

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Besides, some techniques for boundary conditions, interior boundaries, interfaces between different dielectric media and time harmonic equation are proposed for the employment of this preconditioner.

此外，还提出了对不同的边界条件、求解域内部边界、介质分界面和时谐场方程的处理技术以便应用该预处理器。

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This article expound the principle of inverter time the selective harmonic elimination technology is studied.

文中阐述了变频电源的工作原理,研究了特定消谐波控制技术.

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Dynamic Response of Elastic Layer on Stiff Foundation under Time Harmonic Surface Vertical Concentrated Load

刚性基础上的弹性层在表面垂直集中简谐载荷作用下的动力响应

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The characteristics of harmonic cluster of output voltage, output current and time harmonic magnetic potential of AC-AC frequency converter is analyzed.

分析了交-交变频器输出电压、电流和时间谐波磁势的谐波族特征，指出了该特征对电动机运行噪声的影响。

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The Radiation Power , Resistance, and Gain of Time Harmonic Currents.

弦变线电流之辐射电功率 、 增益 、 及辐射电阻.

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The method of the real time harmonic analysis of bivariate AC-AC frequency transformer is discussed plenty of experiments prove its feasibility.

研究探讨了双变量交交变频器实时谐波分析的方法，并结合大量的实验验证了其可行性。

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Prototype iron loss analysis shows that as the frequency increases, the stator iron loss increases; at low speed region, time harmonic eddy-current loss accounts for the majority part of stator iron loss. Finally, the prototype manufacturing and test is going on.

对样机的铁耗分析表明：随着频率升高，定子铁耗增大；在低速时，时间谐波涡流损耗占定子铁耗的主要部分。最后，进行样机的制造与测试。

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Practical approximative formulations of dyadic Green functions in time-harmonic eddy current problems

时谐涡流问题并矢格林函数实用近似表达式

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Time harmonic electromagnetic field solved by using the method of spherical wave function expansion

用球面波函数展开法求解时谐电磁场

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Based on the spatial reconstruction of total field, the algorithm is proposed to solve the inverse scattering of a time harmonic wave and a UWB pulse wave from rough surfaces, respectively.

提出了基于空间场重构理论的时谐电磁波逆散射算法和超宽带脉冲电磁波的逆散射算法。

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We obtained the field equations by the method of time harmonic electromagnetic field and the distribution of the excited magnetic field by the finite element analysis software.

采用时谐电磁场分析方法推导出该模型的有限元方程并利用有限元分析软件仿真激励磁场分布。

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If the time harmonic source is assumed to be constant voltage, the summed pulse propagation is the impulse response along the line.

若各频率成份之电源为定电压，则所得时域脉波即脉冲电压源在传输线上之脉冲响应。

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Probing the medium with a time harmonic homogeneous plane wave gives the Christoffel equation. Then the complex velocities for homogeneous viscoelastic waves are calculated from it, while the attenuation factor and phase velocity and quality factor are obtained from the complex velocity.

使用均匀平面简谐波分析方法研究其频散关系，得到Christoffel方程，进而获得均匀平面波的复速度、相速度、衰减系数和品质因子的表达式。

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The uniqueness theorem for electrostatics, magnetostatics and time harmonic fields is unified and proved by language of differential geometry.

应用微分几何的外微分分析对静电场、静磁场和时谐电磁场定解问题的唯一性定理进行统一表述和证明。

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The time harmonic voltage and current wave propagation along a transmission line can readily be transferred from frequency domain voltage and current phasor distribution along the line.

由传输线上电压及电流沿线分布之频域相量，可转换为传输线上各频率成份弦波电压及电流沿线之时域传播。

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