阐述了SPWM的调制原理与频谱分析。
The modulation principle and spectrum analysis for SPWM were expatiated in detailed.
本文给出了一种应用微机进行电网谐波检测与频谱分析的有效方法。
An effective method of microcomputer aided detection and frequency analysis of harmonic in power-network is presented.
运用MATLAB语言模拟实现了数字信号的ASK、FSK、PSK调制与频谱分析。
The paper uses MATLAB to simulate ASK, FSK, PSK modulation of digital signal and spectrum analysis.
与频谱分析法相比，它不需要进行乘法运算，因而处理速度快，分析结果与信号能量无关。
Unlike spectrum analysis, without multiplication, the processing is made at high speed, its results have no connection with power of the signal.
通过频谱分析，可以求出含在各序列中的频率，从而分析变形产生的原因，建立变形与外部因子的频谱关系。
The reason for deformation can be found and the spectral relation between deformation and external factors can be established.
通过对载波信号的频谱分析，提出了一种能分离治疗阈值与疼痛阈值的无极性指数脉冲。
After analyzing the spectrum of a group of signals, non-polar differential exponent pulse signal was selected as carrier wave, which can separate therapy threshold and ache threshold.
本文通过对4102Q型柴油机噪声的频谱分析与研究，了解该型柴油机参数调整对噪声的影响；
In this paper, spectrum analysis is carried out for 4102Q diesel engine to investigate the effect of parameters adjustment on noise emission, and to determine its noise sources.
第三章针对超声波检测信号特点，给出超声频谱分析的基本原理与方法。
Chapter 3 provides primary principles and approaches of ultrasonic spectrum analysis in accordance with features of ultrasonic testing signals.
第四章介绍了在自行构建的超声频谱分析系统上，进行超声频域特征应用方法与技术的研究。
Chapter 4 introduces the research of application and techniques of ultrasonic spectrum features on the analytic system which has been constructed.
传统语音信号谱特征的提取是基于FFT 的能谱分析方法，在噪音环境情况下，对噪音的频谱成分与语音信号的频谱成分的处理采用“平均主义”的原则。
Traditional speech signal processing is based on FFT power spectral analysis, in noisy condition, the spectrum of noise and speech signal are processed in the same way.
通过实验测试，频谱分析系统使用简便直观，只要接到信号源与示波器之间，即可观察信号的频谱。
The using of spectrum analyses system is easy and visual, after testing in lab. Only interfacing it between the signal and oscilloscope, then you can observe spectrum of signal.
本文通过应用频谱分析方法对我国越剧唱法的声音形态进行了研究并且与美声唱法进行了比较。
The paper studies the singing of Shaoxing opera by spectrum analyzing and makes a comparison with bel canto.
独特的向5372a （相比，与5371a ）是更深的记忆体，硬体直方图，和FFT能力高的性能和更复杂的抖动频谱分析和相位噪声的研究。
Unique to the 5372A (compared with the 5371A) are deeper memory, hardware histograms, and FFT capabilities for high-performance and more sophisticated jitter spectrum analysis and phase noise studies.
使用CVI软件设计了一种基于虚拟仪器的频谱分析仪，并将其运用于喷气织机振动传感器输出信号测试与分析中，建立了整个测试系统。
VI-based spectrum analysis instrument using CVI software is designed and it is used to test and analyze sensor output signal of jet loom vibration. The whole testing system is established.
根据加工工艺的需要， 系统采用主从控制结构，振动信号的检测、频谱分析与电解加工在整个过程中交替进行。
During the processing of the foil, the signal-collecting, the frequency-analyzing and the electrolysis-controlling should been done alternately.
使用CVI软件设计了一种基于虚拟仪器的频谱分析仪，并将其运用于喷气织机振动传感器输出信号测试与分析中，建立了整个测试系统。
A VI-based spectrum analysis instrument using CVI software is designed and it is used to test and analyze sensor output signal of jet loom vibration. The whole testing system is established.
文中的分析与结论对频谱分析系统的正确使用具有指导意义和实用价值。
The analytical and experimental results are very useful for the rational use of Fourier spectrum analysis system.
利用频谱分析与倒频谱分析技术对齿轮系统的故障进行检测与识别，给出了诊断齿轮系统故障的一般方法。
The faults of geasystem are diagnosed by spectrum and cepstrum analysis techniques. A generamethod for diagnosis of the faults of gear system is given.
它将振动平均信号等距分段(所分段数与被监测齿轮齿数相等)，然后对分段信号进行频谱分析等。
The main idea of the single gear tooth analysis is that the vibration signals collected with high sampling rate are divided into a number of segments with the same time interval.
基于高压柱塞泵噪声产生的机理分析与振动频率的计算，找出产生噪声的根源；对实验测得频谱曲线进行频谱分析表明，改进后的高压柱塞泵的噪声得到了明显地改善。
The source of noise in the high pressure plunger pump is identified through frequency spectrum analysis and measurements show significant reduction of noise in the improved plunger pump.
对样机的振动与噪声进行了实验研究，通过对采集的振动与噪声信号进行频谱分析，分离出了电磁振动与噪声。
It also studied by method of experiment. The electromagnetic vibration and noise were isolated by spectral analysis to the vibration and noise signals.
以继动阀为例，探讨了气制动传动系统滞后反应时间特性，并将频谱分析引入到对气制动传动系统动态特性的分析与评价中。
Finally take the relay valve for example, time lag characteristic of air brake actuating system is discussed and the spectrum analysis is introduced in…
频谱分析表明测试信号中含有两个主频，分别对应发射探头的发射主频与测试面自振频率（采用ANSYS有限元程序作半空间体模态分析加以验证）；
The signal's amplitude spectrum reveals that there are two main frequency, the higher is the probe signal's dominant frequency and the lower is the testing plane's free vibration frequency.
研究了磁阻效应的扭矩信号处理方法，分析了信号相位差的相关分析法和频谱分析法，并进行了仿真计算与误差分析。
The real-time shaft power is being monitored by calculating the torsional Angle and shaft speed on line. 2 the torsion signal processing method is researched on.
研究了磁阻效应的扭矩信号处理方法，分析了信号相位差的相关分析法和频谱分析法，并进行了仿真计算与误差分析。
The real-time shaft power is being monitored by calculating the torsional Angle and shaft speed on line. 2 the torsion signal processing method is researched on.
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