modulation frequency的例句大全

It gives the concretely process reality of general test system structure chart and modulation frequency test domain, through the analyzing the theory of modulation frequency.

通过对调制域测频原理的分析，给出了一般性测试系统结构框图和调制域测试的具体实现过程，找到了提高测试信号精度的方法。

This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation;

本文对双极性调制的无刷直流电动机仿真，分析了转速和调制频率对转矩影响；

Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Modulation Frequency Continuous Wavelet Transform

高斯线调频连续小波变换的时频能量衰减因子方法及其应用

It is made clear through the theoretical analysis that the frequency shift is dependent on the modulation frequency, thermal time constant, bias current of the laser diode and so on.

理论分析表明频移幅度与调制频率、时间常数和半导体激光器的偏置电流等物理量有关。

Study of countermeasures to deceptive jamming using random linear modulation frequency ratio SAR

随机线性调频斜率SAR抗欺骗干扰方法研究

Response of Electro-optical Coefficient of Thermal Poled PANDA Fiber Devices to Modulation Frequency

热极化光纤中线性电光系数对调制频率的响应

To solve the problem of sky-high modulation frequency requirement in MOG ( Micro-Optical Gyroscope), a new double-frequency modulation technology based on triangular wave was proposed.

对微光学陀螺双频率调制中需要极高调制频率差的问题，提出了一种基于三角波的双频率调制技术。

finally, a solution to restraining the harmonic current and ripple torque is suggested, ie a larger modulation frequency ratio of 3k is to be adopted, as it is used in spwm.

文中还提出了抑制谐波电流和脉动转矩的方法，如在SPWM生成中，采用较大的3的整数倍调制比。

In this paper, the wireless data radio takes the GPS differential positioning as a starting point, takes the FSK modulation mode, can complete the wireless transmission of data in S frequency band with the time division duplex operation mode.

本文设计的无线数传电台以用于GPS差分定位为出发点，采用FSK的调制方式，能在S频段以时分双工的工作模式完成数据的无线传输。

Mathematics analysis in frequency domain for sample time staggered space vector modulation technique

错时采样空间矢量调制技术的频域数学分析

The theme mainly focused on the problem how to apply Orthogonal Frequency Division Multiplexing modulation technology to the low-frequency elastic wave through-the-earth communication system which takes the layered earth for transmission medium.

本课题研究的是把正交频分复用调制技术应用在以分层大地为传输媒介的低频弹性波透地通信系统中。

Orthogonal Multi-Carrier Modulation ( OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.

为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。

Sample time staggered space vector modulation ( STS-SVM) technique is a novel switching modulated strategy, which can acquire much high equivalent switching frequency at fairly lower device switching frequency and have excellent harmonic characteristics.

错时采样空间矢量调制是一种新型的开关调制策略，能够在较低的器件开关频率下实现较高等效开关频率的效果，具有良好的谐波特性。

The approach is to use short-time analysis to extract the characteristics of time-varying amplitude, frequency and phase in a digital modulation signal, and applies them for simple identification.

该方法用短时分析提取数字调制信号在幅度、频率和相位随时间变化的特征，并利用这些特征对各种数字调制信号进行识别。

In order to resolve source shortage of television tower, adopting frequency modulation and television multi-channel with total tower.

为了解决发射塔资源短缺问题，可采用调频和电视多频道共塔技术。

The reference vector corresponding to basic vector and its role time under linear modulation mode is decided. As well as redundant switches are optimization selected by extreme value method to reduce the switching frequency.

确定了线性调制模式下参考矢量所对应的基本矢量及其作用时间；并提出了极值法对冗余开关状态进行优化选择以降低开关频率。

Consequently, a novel fuze system is proposed in this paper, incorporating both multi-carrier and linear frequency modulation. With the OFDM technology, the information redundancy in the echo of the system is increased.

本文研究了多载波与线性调频复合调制引信，利用正交频分复用技术增大回波信号的信息冗余度，并采用线性调频技术减小引信天线泄漏信号对探测系统的干扰。

It has the advantages of fine frequency resolution, short frequency conversion time, wide modulation bandwidth and controlling facility, and has capability of generating the different waveforms.

它具有频率分辨率高（可达uHz）、频率转换时间短（可达ns）、输出频率带宽很宽、程控灵活等优点，并具有产生多种常用波形的能力。

Heating pipe type air preheater was used in the heating furnace and the frequency modulation technique was employed in the induced draft fan and the air blower, which increased the heat furnace efficiency by 7.2%.

加热炉改用无机热管式空气预热器，引风机、鼓风机改用变频技术，使加热炉热效率提高7.2个百分点；

In this paper, a type of NC lathe's main transmission agent by using a frequency modulation AC Spindle Motor and a tree speed gear box to make the spindle speeds be stepless change was present.

介绍一种以交流变频调速主轴电机驱动、串接一个3档分级变速机构，实现主轴无级变速的数控车床主运动传动系统。