step_wise

介绍MATLAB时频工具箱的一本英文书,通过它可以很容易的了解时频分析模块(a book about Time Frequency Toolbox in English)

matlab 最优化算法matlab 最优化算法matlab 最优化算法matlab 最优化算法(matlab zuiyouhau suanfa )

这是＜小波分析与信号处理——理论、应用及软件实现＞的电子版书籍(<wavelet analysis and signal processing-- Theory, Application and Software> electronic version of books)

简易四则运算计算器，使用时需将.m和.fig文件放到matlab工作目录下（本人使用的是R2013，放到bin文件夹即可，其他版本放到对应文件夹，有的是work文件夹），然后在命令窗口输入.m文件的文件名，即可显示一个简易计算器界面。有0-9九个数字供点击输入数，有重置和正负号按钮，界面简洁，功能耐用(Simple arithmetic calculator should be used with the. M and. Fig file into matlab working directory (I use the R2013, into the bin folder to the other versions into the corresponding folder, some work folder) , and then in the command window. filenames m file to display a simple calculator interface. 0-9 nine figures for the number of click enter, and the sign has reset button, the interface is simple, functional and durable)

介绍了 Cohen类双线性时频分布并针对交叉干扰项影响无法完全消除的问题进行了重排时频变换以提取及分辨 含有白噪声和窄带周期干扰的局部放电信号。处理仿真和现场检测到的局部放电超声信号时根据白噪声和窄带 周期干扰信号在时域上的平稳性特性发现重排 Cohen类时频变换方法不仅可以很好地将局放信号和背景噪声以 及窄带周期干扰信号分辨开来,而且大大减弱并抑制了交叉干扰项的影响,保持了更高的时频分辨率和时频聚集 性,从而验证了重排 Cohen类时频变换方法的有效性。 (In order to express the partial discharge ( PD) information of gas insulated switchgear ( GIS) in time-frequency domain, weintroduced theCohen? s class bilinear time-frequency distribution and its reassigned time-frequency transform method to pick up and distinguish theultrasonic signals in field from the whitenoises and narrow band periodic interference signals using the acousticemission ( AE) technology. After the processing of the simulated and PD ultrasonic signals in field, and according to the stationary feature of white noises and narrow band interference signals, wedraw a conclusion that the reassigned time-frequency distribution method can not only distinguish thePD signal from back ground noises and narrow band interference signals, but also decrease and restrain the influenceof cross-items, and acquire better time )

小波包分析提取振动信号中的特征频率，与理论分析结果相比，用于建立主成分分析模型。( Wavelet packet analysis to extract vibration signal characteristic frequency, Compared with the results of theoretical analysis, Principal component analysis model for establishing.)

IMAGE PROCESSING BASED CALIBRATION OF HIGH PRECISION LASER PROJECTION SYSTEMS

FSK的MATLAB仿真，FSK的数据传输(The MATLAB simulation of FSK)

晶闸管六脉波整流,用与大功率电源谐波分析(six pulse converter)

说明：  产生电压扰动数据，PSCAD仿真，可作为各类信号处理仿真的数据源(Creates a voltage disturbance data, PSCAD simulation, can be used as various types of signal processing simulation data source)