调制系数

电压源型逆变器，根据最大调制系数（MI）的大小逆变器工作在三种不同区域：线性调制、过调制Ⅰ和过调制Ⅱ区，不同的区域对应着不同的算法以实现线性控制逆变器输出电压。

Voltage source inverter may work in three different regions according to the value of modulation index ( MI ), linear modulation , overmodulation mode (ⅰ) and mode (ⅱ) . Different region requires different algorithm to produce linear output voltage .

在开阔的室内环境下，完成了不同参数条件下的反向散射调制系数测试。

Modulation index of backscatter link under different parameters is measured in open indoor environment .

除此之外，还对信噪比、滚降和调制系数对检测性能的影响进行了测试。本文最后在基于DSP的演示系统上对本文算法进行了实现。

In addition , the estimated performance against roll-off factor , modulation coefficient , SNR value was also investigated . Finally , the proposed algorithms were implemented on the DSP-based hardware system .

要实现对ISAR的欺骗干扰，设计一个好的假目标信号尤为重要，其关键在于如何产生一个好的相位调制系数对截获对方ISAR信号进行调制。

To realize deception jamming against Inverse Synthetic Aperture Radar , a good phase modulation coefficient that is used to modulate intercepted ISAR pulse is very important .

从理论上分析了PZT（压电型）光纤相位调制器在开环FOG（光纤陀螺）中的应用特点，研究了它的调制系数和调制相位延迟变化对开环FOG性能的影响；

The application characteristic of PZT fiber optic phase modulator used in open loop Fiber Optic Gyroscope ( FOG ) was analyzed theoretically . The open loop FOG performance defection due to the variation of modulation coefficient and phase delay was studied .

根据自然采样SPWM基本原理，结合SABER软件仿真分析了调制系数、载波频率、互锁时间对逆变器输出电压的影响。

According to the basic principle of natural sampling SPWM , the software of SABER is used to simulate and analyse the factors that influence inverter output voltage . The factors include modulation coefficent , carrier wave frequency and dead time .

目前随着频谱分析技术在铁路中的应用，人们发现当调制系数较小时的频移键控（FSK）信号（如UM71轨道电路信号）与调幅（AM）信号的频谱图非常相似，很难区分。

With the wide application of spectrum analysis techniques in railway , it is discovered that the spectrums of FSK signal and AM signal are very similar , and very difficult to be distinguished . A theoretical analysis is done to the spectrums of these two signals in this paper .

推导了反射式强度调制系数，并利用计算机软件仿真研究了其调制特性；

Deduces modulation formula of reflex sensor and studies its characteristics using computer ;

反射式光纤传感器光纤参量对调制系数的影响

Effects of optical fiber parameters on the intensity modulation property of the reflective fiber optic sensors

在此基础上提出了调制系数宽范围变化的数字混沌调制方法。

It provides an access to put forward another modulation method in which modulation correlation can vary widely .

讨论了调制系数、色散光纤距离和载波抑制功率等因素对毫米波信号及各次谐波传输性能的影响。

The effect of three parameters such as modulation index , dispersion distance and optical carrier suppression ratio is also discussed .

当调制系数较低时，会造成开关器件利用率不均匀，导致部分器件提前损坏。

As a result , some switching devices would be worn out earlier because of the unbalanced utilization at low modulation indices .

这种方法算法简单，容易实现，开关频率低，电压调制系数高。

The control scheme is easily realized , and the algorithm for it is simple . It has a low switching frequency and a high voltage modulation coefficient .

计算机仿真结果表明，当待测距离一定时，光强调制系数随着安装误差的增大而减小。

The computer simulation is performed , and the results show that when the distance on measure is certain , the coefficient of the intensity modulation will decrease with the fixing error increasing .

该仿真模型包括两部分：基础原理仿真部分和调制系数调节仿真部分，基础原理仿真部分主要为直接吸收光谱、调制吸收信号光谱和谐波提取图。

This simulation model includes two parts : theoretical simulation part and the modulation factor regulating part . The theoretical simulation part is mainly absorption spectra , modulated signal absorption spectrum and the harmonic extraction diagram ; the modulation factor part is modulating all the coefficients of the ideal model .

相对论速调管振荡器中两个调制腔耦合系数的计算

Calculation for a coupling coefficient of two modulation cavities in a relativistic klystron oscillator

通过特殊的传感器结构，FBG反射光的中心波长和光强受到应变与温度的调制，根据调制系数的不同，实现了应变与温度的同时测量。

The measurement simultaneously of strain and temperature was realized by a special sensor structure .

分析了数字调制信号的小波系数在时间-尺度平面上的变换特征，详细推导了不同调制类型的小波系数最大时所对应的最佳尺度因子。

Furthermore , The optimum scale factors of different modulation types is deduce in detail .

不同数字调制信号的小波系数有着不同特征，最佳尺度因子的变化规律反映了通信信号的调制类型，最佳尺度因子的这种特点用来构造了基于小波变换的调制信号分类器。

Different modulation signals have remarkably different wavelet coefficients features , their optimum scale factors corresponding with modulation types .

在能量调制过程中，系数的修改幅度由图像纹理特征和能量调制模型来控制。

During the modulation , a theorem deduced from the texture features and energy modulation model is employed to restrict the modified magnitude of coefficients .

激光器件及激光束的动态调制，目标反射系数补偿：采用半导体激光器，经过整形、准直成圆细光束。

Dynamic modulation of laser and laser bean , and offset to target reflection coefficient : laser bean is shaped and collimated to round and slender beam by using of the semiconductor laser .

用传输矩阵法对具有不同参数的λ／4移相结构、多节λ／4移相结构、有效折射率调制结构、耦合系数调制结构和缝合误差结构等五种光栅子结构进行了数值模拟计算。

Five types of grating substructure including quarter wavelength shift , multiple quarter wavelength shift , tapped effective refractive index , tapped coupling coefficient and stitching are numerically analyzed using the transfer matrix method .

本文提出一种切削过程传递函数辨识的新方法，即用输入脉冲响应位移使切削过程传递函数从切削系统中解耦来测量内调制动态切削力系数。

In this paper , a new method to identify the transfer function of a cutting process is proposed . By applying impulse response to the closed loop cutting system from which the cutting process could be decoupled one can measure the dynamic cutting force coefficient due to inner modulation .

文中推导出调制及解调线路的调制系数k、解调系数k以及它们的传递函数。

In this paper , the modulation and demodulation coefficients kM and k of the M-D M circuits and their transfer functions are derived .