基波

在此基础上，研制了基波和Q波段、二次谐波振荡器。

Finally , a fundamental oscillator and a harmonic oscillator of Q-band are fabricated .

本文提出了一种基于DSP基波提取的混合型谐波检测改进方案设计，设计了系统DSP主程序软件，并解决了实际运行中易受到的抗干扰问题。

An improved design scheme based on fundamental component extraction using DSP is presented in this paper .

提高工频电流电压基波计算精度的Fourier均值算法

Fourier averaging algorithm for improving accuracy of basic wave voltages and currents calculations on industrial frequencies

利用S，P，Q和N构成功率四边形，由S，P和Q计算非正弦交流电路的基波功率因数cos（？）

If S , P and Q are known , using the power quadrangle can compute the fundamental harmonic power factor cos (?)

该方法通过PI闭环控制可以纠正锁相环检测到的A相电压的相位，使其趋于A相基波正序电压的相位。

The method produced can rectify the phase A voltage detected by PLL through PI closed loop control .

本文讨论氧化锌避雷器在基波PT铁磁谐振过电压下的工作状况。

The working circumstances of metal - oxide arresters under fundamental frequency PT ferroresonance are discussed in this paper .

采用了一种适用于单相电路的基于鉴相原理的基波电流检测方法，利用DSP实现了基波电流的实时检测。

A current detection method based on the principle of distinguish phase was adopted . The use of DSP realized real-time detection of fundamental current .

FET基波和谐波振荡器的大信号设计

The large-signal design for FET fundamental and harmonic oscillators

分析了SVC装置现有的无功功率检测方法，提出了一种基于正交小波变换的基波无功功率实时检测方法。

A novel method to detect real-time reactive power was presented based on wavelet transform .

由于APF不承受基波电压，因此APF所需的容量很小。

The power of lever of APF is very small because of avoiding to basic voltage .

离散傅里叶变换（DFT）在电参量检测领域应用十分广泛，其算法基本原理是利用离散傅里叶变换抽取基波分量，计算出电参量参数。

The discrete Fourier transform ( DFT ) is widely used in the field of electrical parameters detection .

以椭圆板域求解为示例，分析了偏心率e和面积对基波频率系数的影响。

Finally , an ellipse elastic clamped-plate is used as an example to analyze the effects on fundamental frequency coefficient caused by eccentric ratio e and area size .

基波平衡法求解大阻尼Duffing方程

The Duffing Eguation with large damping solved by using first harmonic balance method

逐相dq变换法可以完整地将基波或谐波检测出来。

Fundamental or harmonic current can be extracted completely by per-phase dq transformation .

差补调制方式控制的H桥能够输出3种电平，能够消除大部分低次谐波及所有的偶次谐波，主要谐波频带远离基波，且范围是两电平的2倍。

Most low order harmonic and all even order harmonic can be cancelled in H-bridge output with this method , and main harmonic band is far from the fundament frequency .

对8mm基波回旋行波管放大器进行了研究。

An 8 mm fundamental wave gyro traveling wave tube is studied .

基于基波电压幅值线性输出控制的SVPWM过调制新算法

A novel algorithm of SVPWM inverter in the overmodulation region based on fundamental voltage amplitude linear output control

Gunn谐波振荡器基波注入锁定分析

Analysis of Fundamental Injection Locking of Gunn Harmonie Oscillator

阻性泄漏电流基波和3次分量是反映MOA劣化现象的两个故障特征量，仿真分析对此问题及间谐波电压对阻性泄漏电流的影响。

Resistive first-harmonic current and third-harmonic current are the two fault eigenvectors reflecting MOA 's aging phenomenon .

仿真结果表明，基于单序dq坐标系的PI控制对输入电压波动、负载变化等基波扰动具有较好的抑制效果。

Simulation results show that PI control on single dq coordinate can effectively restrain disturbances such as input voltage sags 、 load changes .

仿真结果表明，APF采用该谐波检测算法可以在一个基波周期内完成对负载电流变化的跟踪并实现谐波检测。

Simulative result shows that , the APF with RDFT algorithm detects the harmonic current and follows its variation in a fundamental period .

TBC能补偿基波无功功率，平衡连接到系统的负载。

The TBC compensates the fundamental reactive power and balances the load connected to the system .

用微机查表方式调整SPWM波的基波频率和幅度，操作简单省时。

The adjustment of frequency and amplitude of the SPWM waves is accomplished on microcomputer . The operation is simplified and needs less time .

提出了利用短窗Morlet复小波计算工频电信号基波与各次谐波信号幅值的算法，其频率特性和计算值的稳定性都优于傅里叶算法。

A short-window Morlet complex wavelet algorithm is presented , which calculates power-frequency fundamental component and harmonics ' amplitudes .

结果与对照组相比，LER的基波（fundamentalharmonic，1f）与二次谐波（secondharmonic，2f）在RP眼表现振幅降低。

Results Compared to controls , the patients showed losses of both fundamental and second harmonic amplitudes .

采用改进的基于数字信号处理器（DSP）基波提取的混合型检测方案，既有效减小了时延和误差，又使得时延的影响仅局限于基频分量；

The improved design scheme based on fundamental component extraction using digital signal processor ( DSP ) is a mixed system , which can reduce time delay greatly and limit its influence only on fundamental component .

同时，从补偿和滤波两种思想出发，指出并联型谐波补偿有源电力滤波器（APF）的补偿作用和串联型基波补偿APF的滤波作用可适用于非线性负载谐波电流的抑制。

From the idea of compensation and filtering , the parallel compensating harmonic APF and series compensating fundamental wave APF are suitable for suppressing harmonic current .

分析了TCR并联电容后其基波阻抗与晶闸管触发角之间的关系，对其存在的死区问题进行了具体讨论。

The mathematical relationship between the fundamental impedance and the firing angle of the thyristor is derived , and the regulated dead-zone is discussed .

CAD分析与实验结果表明，此法可精确有效地分析振荡器输出基波及各次谐波附近的近载相位噪声分布特性，且适用于非线性微波CAD。

Comparison between simulation and experiment proves that this approach is very suitable for nonlinear microwave CAD and can be used very efficiently to predict accurate near & carrier phase noise around fundamental and harmonics of the oscillators .

解答由主部x0（只包含一个基波分量）和一、二阶修正量x1、x2（三次、五次谐波分量及基波分量的修正量）组成。

The solution is composed of the main oscillation x0 ( includes one resonant-frequency component only ) and 1st - , 2nd-order corrections x1 , x2 ( 3rd , 5th harmonics and correction of the fundamental-frequency component ) .