本文对于变换器功率电路部分进行了小信号建模和分析，给出了小信号特性传递函数。
In this thesis the small signal model of the power stage of the converter was established and analyzed, the relative transfer functions were presented.
作为一种日益获得广泛应用的信号处理新技术，小波分析具有良好的时频局域化特性，适应于时变和瞬变信号的分析。
As a new technique of signal processing, wavelet analysis has excellent characteristics of time frequency localization and is suitable for analyzing time varying or transient signals.
此系统应用小波降噪的方法提高测试信号的质量，然后提取信号特征点，得到溢流阀动态特性的各项参数。
Applying wavelet denoise to improve the test signal, the dynamic characteristic parameters of a overflow valve were obtained by selecting characteristic point of the signal.
利用自相似过程在小波分解下的特性，提出了基于小波变换的自相似信号检测算法。
A detection approach based on wavelet transform is proposed for these self-similar signals, which is obtained from the properties of the self-similar process after wavelet transform.
采用窄带滤光片作为选频元件对精确波长激光器高频调制特性进行了小信号分析。
The small signal analysis for high frequency modulation characteristics of specific wavelength laser diode with narrowband filter was presented.
数值模拟了小信号增益平坦特性。
The gain characteristic of small signal is numerically simulated.
本文在对系统进行适当简化的前提下，采用“扰动信号反馈注入法”建立了系统的小扰动端口特性，为系统的静态稳定性分析奠定了基础。
In this paper, the small signal port characteristics is established by the "perturbation signal feedback injection method", which lays a foundation of the system stability analysis.
小波包变换能作为一种有效工具对信号特性进行精细分析，同时提供具有良好时频局部性的正交小波包基。
Wavelet packet transform is used as an efficient tool for precisely analyzing signal property, and provides orthogonal wavelet packet bases with better time frequency localization function.
从速率方程出发，利用小信号分析方法对垂直腔半导体光放大器(VCSOA)的频率响应特性进行了研究。
Frequency response characteristics of vertical cavity semiconductor optical amplifiers (VCSOAs) are investigated by utilizing small signal analysis method.
作者利用信号的小波变换在多尺度边沿上的综合特性，提出了一种新的QRS波检测法。
A new adaptive matching filtering algorithm, based upon synthetic characteristics of wavelet transform of signal along margins of various scales for QRS detection, is developed.
研究结果表明：选用不同的小波函数对同一压力波信号进行时频特性分析时，得出的结果是有差别的。
The results showed that when different wavelet functions were used to analyze the same pressure wave signal, the differences could be found between each other.
通过选用六种不同的小波函数，对柴油机喷油系统压力波信号的时频特性进行了小波分析研究。
In this paper, six wavelet functions were selected for the analysis of time-frequency characteristics of the pressure wave signal in fuel injection system of a diesel engine.
介绍了小波变换的基本概念和滤波特性，给出了小波变换作为一种新的分析工具在非平稳信号分析中的应用方法。
The concepts and its filter of wavelet transform are introduced, the application of wavelet as a kind of new analysis tools in unstable signal analysis is presented.
本文将小波包变换用于非高斯噪声统计特性的研究，提出一种新的非高斯分布噪声下的信号检测算法。
In the dissertation, it puts wavelet-packet decomposition into the study on non-gaussian noise. It offers a new signal dection method under non-gaussian noise backgroud.
小波变换具有多分辨率和多尺度特性，特别适合于二维图像信号的处理，目前已应用在静止图像的压缩标准中。
While wavelet transform is suitable in image compression due to its multi-resolution and multi-scale analysis property, and is used in the standards of image compression.
小波变换局部极大值滤波方法利用信号与噪声不同的尺度变化特性来区分信号与噪声，将噪声从信号中分离出来。
A filtering method based on wavelet transform with local maximum value was discussed. The method could distinguish signal from the noise according to the different features of scale change.
文中对小信号调制下单量子阱激光器的啁啾特性进行了研究和分析。
In this paper, the chirping characteristics of quantum well laser diodes under small signal modulation are studied.
针对电能质量扰动信号的特性，本文采用小波变换对电力系统的高频、瞬时脉冲、电压切痕扰动信号进行检测。
According to features of power quality disturbance signal, this paper detects the disturbance signals of high-frequency, transient impulse and voltage notch with wavelet transforming.
该文利用小波包变换的时频局部分析能力，研究了非高斯分布平稳随机噪声的统计特性，揭示了非高斯噪声信号的信号结构。
By exploiting wavelet packet transform to analyze signals both in time and frequency space, this paper researches the statistic property of non-Gaussian stationary noise and its signal structure.
该非线性PID算法构造了增益参数关于误差信号的非线性拟合函数，算法能够同时保证响应速度快、超调量小以及自适应能力强的系统特性。
The nonlinear function is given by the nonlinear PID algorithm, and the algorithm can guarantee the system have the property of the fast response, a little over shot and strong self adaptive.
利用非线性的小信号对反馈系统的控制，以实现一个具有混沌和超混沌特性的反馈系统的混沌控制和同步。
Control of feedback system by small nonlinear signals realizes chaotic control and synchronization of the system with chaos and hyper-chaos.
本文给出了在环形光纤外腔光反馈之下半导体激光器频偏特性的小信号分析理论。
In this paper a complete small signal analysis for semiconductor laser frequency chirping in the presence of optical fiber ring feedback is presented.
利用此特性对信号进行小波域滤波，可从加噪的语音中提取人耳所能接受的频率成份，是一种简单有效的语音去噪算法。
Filtering signal in the wavelet domain, by the frequency components acceptable for ear from the original speech, is a simple and effective speech denoising method.
结合电力操作电源的特性，建立了基于有限双极性控制的操作电源的小信号模型，并设计了控制电路。
In this paper, the small signal modeling of the electric rectifier based on limited double poled control scheme is presented, and the control loop circuit is designed.
研究基于小波变换有效提取信号瞬变特性的功能，对数字调制移相键控(PSK)信号进行符号速率估计。
Studies the function of wavelet transform (WT) that can effectively distill the transient characteristics of digital signals to estimate the symbol rate of PSK signals.
小波变换具有很好的时域和频域局部化特性，为以非稳态振动为特征的信号提供了有效的分析手段。
Wavelet transform possesses excellent characteristic of time frequency localization, and provides an effective measure for analysing signal causing unstable vibration.
小波变换具有很好的时域和频域局部化特性，它对以非稳态振动为特征的信号提供了很好的分析手段。
Wavelet transformation possesses excellent properties of time-frequency localization and thus provides an effective means for analyzing signals characterized by unstable vibration.
从小波变换的基本概念出发，简要介绍了小波变换在信号时-频分析中的变焦特性。
From the basic conception of wavelet transformation, we discuss briefly the zooming characteristics of wavelet transformation in time-frequency domain analysis in this paper.
研究了基于小波变换的语音去噪问题，在对传统阈值法去噪和语音特性分析基础上，提出一种改进的多阈值法语音信号去噪方法。
By Analysing speech signal and conventional denoising method of threshold, a new mult-threshold based on wavelet transform method of speech signal denoising is proposed.
依据信号与噪声的小波变换在不同分辨率下呈现不同特性的特点，提出了多分辨率支集图像低通滤波方法。
Multiresolution support for lowpass filtering is introduced according to different property of wavelet transform for signal and noisy at different scale.
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