The3- D Vector and Pattern of Electromagnetic Field and Power Density on a Sphere from an Array of Time Harmonic Current.
弦变线电流阵列在球面上电磁场及功率密度流之时变向量与三维场形。
The Variation of Radiated EM Intensity and Power Density on Spheres in Near and Far Field from Array of Time Harmonic Currents.
弦变线电流源之辐射电磁场强及功率密度在近场至远场球面上之变化。
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。
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。
It has been reported in many literatures that electric field solution is not cau sal when formed by a superposition of time harmonic waves in an attenuation medium.
许多文献认为，弱介质中电场解用时域谐波叠加形式分析时，无因果关系可循。
Active Power Filter (APF) is a good method for real-time harmonic elimination which has been developed since 1980's. The study on APF has become a hot research field.
有源电力滤波器(APF)是80年代以来兴起的性能较好的谐波抑制装置，是比较热门的研究领域。
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。
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。
We've done this before-- this is the conservation of energy, and in order to find the period of the simple harmonic oscillation, we take the time derivative.
以前算过-,这是能量守恒，为了算出,简谐振荡的周期，我们求时间导数。
A method of current detect and control for the new active power filter (APF) is presented, which has the ability of canceling harmonic and compensating reactive power at the same time.
提出了一种新型的有源电力滤波器电流检测和控制方法，在补偿谐波电流的同时还可以进行无功补偿。
This paper presents an intelligence test set built by microcomputer technics to monitor and measure the harmonic and surge voltages in the power network and source, on-line and with a real time.
本文提出利用微机技术构造一种在线实时监视和测量电网、电源客观存在的谐波电压和浪涌电压的智能测试仪。
So it is necessary to measure power parameters and harmonic reliablely and in real time.
在这种情况，就需要对电力参数和谐波情况进行准确、实时地检测。
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.
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。
Real-time and accurate harmonic detection and control is the key for practical active filter implementation.
实时、高精度的谐波检测和控制是有源滤波器的重要部分。
Using the 10th International geomagnetic Reference Field (IGRF) models, the latitudinal distribution of harmonic amplitude and its time-variation of geomagnetic potential are investigated.
利用第10代国际参考地磁场模型(IGRF)的资料，研究了地磁位的谐波振幅的纬度分布及其时间变化。
Theoretical derivation indicates that time averaged three-order cumulant of signals, which are from(random) phase harmonic processes, is nonzero and its one-dimension slice is also a harmonic process.
理论推导表明，随机相位谐波过程时间平均三阶累积量为非零值，而且其一维切片仍然是谐波过程。
According to the basic principles of FFT algorithm, this paper analyzes each instance of start time values sampled in harmonic measuring and the data obtained from anytime start sampling.
根据FFT算法的基本原理，对谐波检测中采样起始时刻取不同值的各种情况进行分析，并对任意时刻开始采样得到起始点的数据情况进行分析。
The time profiles of the harmonic spectra from a single atom are obtained through a Gabor analysis of the acceleration of the atomic dipole.
理论分析表明，基态粒子数消耗对不同级次谐波辐射的影响程度不一样；
The dead time control in SPWM converter increases the harmonic component in voltage output and decreases the voltage utilization and reliability of converters.
SPWM变换器中的死区设置使变换器输出电压谐波含量增加、电压利用率和可靠性降低。
The method consists of real-time estimation of signal frequency, synchronous tracking of sampling frequency and error correction of harmonic coefficients.
该方法包括信号频率实时估计、采样频率同步跟踪和谐波系数误差校正几个要素。
Two critical parameters of power quality are run-time voltage and harmonic components.
电能质量中的两个重要参数是运行电压和谐波状况。
The test results show that this method is feasible for real time detection of harmonic and reactive current of the active power compensator. The circuits are very simple.
实验结果表明，这种检测方法是可行的，而且电路非常简单，可用于实时检测有源电力补偿器的谐波与无功电流。
An equivalent area algorithm of harmonic injection is proposed, a realization method of automatic regulating output voltage is presented at the same time.
提出了面积等效谐波注入算法，同时提出了基于该算法的输出电压自动调整实现方法。
This algorithm can overcome the infection of the digital controller's delay time to harmonic compensation and realize the real time compensation.
该算法能够克服数字式控制器所产生的延迟时间对于谐波补偿的影响，可实现谐波的实时补偿。
Instantaneous reactive power theory applied on harmonic and reactive current real-time detection is presented in this paper.
介绍了瞬时无功功率理论在谐波和无功电流实时检测方面的应用。
As to the problem of sub synchronous resonance (SSR) in thyristor controlled series compensation (TCSC) circuit, a method to real time detect and suppress sub harmonic has been put forward.
针对晶闸管控制的串联补偿电路(TCSC)的次同步谐振(SSR)问题，提出了一种可实时检测次同步谐振，并对其加以抑制的方法。
A new approach to real time detection of harmonic and reactive currents for single-phase circuit was proposed.
提出了一种新的单相电路的谐波和无功电流实时检测方法。
In the design of voltage PWM inverter, the existence of dead-time will arouse the in-crease of output harmonic, the pulsation of the motor torque, and even the oscillation of the motor.
设计电压型PW M变频器时死区时间的设定会造成输出谐波增加、负载电动机转矩脉动，严重时甚至引起电动机震荡。
In this paper, the precise solution of a generalized time dependent harmonic oscillator is obtained by a sequence of unitary transformations and applied to construct the squeezed state of the system.
利用一系列幺正变换，求出了广义含时谐振子系统的精确解，并利用此精确解构造了此系统的压缩态。
In this paper, the precise solution of a generalized time dependent harmonic oscillator is obtained by a sequence of unitary transformations and applied to construct the squeezed state of the system.
利用一系列幺正变换，求出了广义含时谐振子系统的精确解，并利用此精确解构造了此系统的压缩态。
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