pisa

12脉波整流闭环控制系统，以电压作为参考信号，通过闭环控制调节，使整流器输出电压跟随参考电压(12-pulse rectifier loop control system, the voltage as a reference signal, the closed-loop control by regulation, so that the output voltage follows the reference voltage rectifier)

Crash course in Matlab

reduction to papr in ofdm with Peak Windowing: The basic idea of peak windowing is to multiply the envelope of OFDM signal with a weighting function . Therefore, ~xE (t)= xE (t) f (t) where XE(t) =[x(t)] The weighting function given by: f (t)= 1-Σ α .w(t- t ) t-t w(t) : is the window function. t : denotes the position of a local maximum of the envelop xE(t) . α : attenuation constant . When the amplitude of envelop amplitude of the OFDM signal exceeds a threshold, a window function is applied to the envelop of the OFDM signal to eliminate the peak amplitude. windowing results in a smooth signal. Hanning window function will be used for w(t) As a matter of fact , other windows such as cosine, hamming and Kaiser may be employed.

robotearth本体定义文件，定义了类别概念和关系等(The OWL ontologies used in the KnowRob system, about robot concept and class.)

心电监测 PVC检测 小波变换 心电监测 PVC检测 小波变换(Detection of ECG monitoring PVC PVC ECG monitoring wavelet transform detection)

Demo macro to extract frames and get frame means from an avi movie and save individual frames to separate image files. Also computes the mean gray value of the color channels.

这个有中文注释，看得明白，采用的是通用的平面波展开法,主要是基于mtlab的程序。( The Chinese have a comment, understand it, Using common plane wave expansion method, Mainly based on the mtlab procedures.)

steganograghy tool,hidetext files in an image

COntrole de courant avec Modulation Vectorielle

1、分别生成两种信号（正弦波、方波、三角波、锯齿波、Sinc波形等）+噪声（高斯随机噪声、均匀噪声） 要求：频率：学号*100； 幅度：学号/10 相位：学号*pi/180 点数：学号*64 2、同时在一个图形中进行显示： 要求：标注X轴、Y轴、题目、颜色、样式、线型标注等。 3、进行信号分析及结果显示（对结果也要图形标注，同2） 要求：相关分析 卷积运算 求和运算 频谱分析（最大值、测频） 4、对上述原信号及信号分析结果分别存成EXCEL文件、文本文件和二进制文件，命名为名字+班级+学号+后缀(1, respectively, to generate two signals (sine wave, square wave, triangle wave, sawtooth wave, Sinc waveform, etc.)+ noise (Gaussian random noise, uniform noise) requirements: Frequency: No.* 100 margin: Student ID/10 phase: learning* pi/180 Points: No.* 642, in a graphical display: Requirements: X-axis label, Y axis, the title, color, style, linear marked. 3, signal analysis and results display (graphical results also marked with 2) requirements: analysis convolution summation spectrum analysis (maximum frequency measurement) 4, the original signal and the signal analysis results were kept into EXCEL files, text files and binary files, named for Name the+ class++ suffix number)