transfer-function-

基于S变换的短时电能质量扰动检测方法，从S变换的结果S模矩阵及S复矩阵中提取出所需数据并以此来对各种扰动情况下的电压暂降的幅值、相位跳变、持续时间和谐波含量进行分析(Disturbance detection method based on the results of short-term power quality S transform from S Mode S transform matrix and complex matrix S to extract the required data and use it to various disturbances in case of voltage dips in amplitude, phase jump variable, duration and content of harmonic analysis)

本代码是基于MATLAB的模糊pid的仿真程序，经测试可以运行。(The code is based on the MATLAB simulation of the fuzzy pid process can run through the test.)

说明：  OFDMA系统中低复杂度比例公平资源分配算法（原文+代码）(Adaptive Resource Allocation in Multiuser OFDM Systems With Proportional Rate Constraints)

matlab code for readind accelerogram files,useful for seismologists

移动无线信道COS207模型MATLAB程序(Mobile radio channel model MATLAB procedures COS207)

用积分法进行反应速率分析得到速率常数k和反应级数n(Integral method for analysis of the reaction rate by the rate constant k and reaction order n)

夫琅和费衍射的matlab仿真，对此方面做了比较详尽阐述(Fraunhofer diffraction of matlab simulation, which has done more elaborate)

用粒子群算法对目标函数进行优化的matlab程序。(Using particle swarm algorithm optimize the objective function of the matlab program. )

设计一个阻带下限0.45*pi 阻带上限0.8*pi 通带下限0.55*pi 阻带上限0.7*pi 通带衰减0.15dB，阻带衰减40dB，分别用汉宁窗汉明窗凯瑟窗布莱克曼窗设计滤波器，对比分析各方法优劣(Design a stop-band limit 0.45* pi stopband limit 0.8* pi Passband lower limit 0.55* pi stopband limit 0.7* pi Passband attenuation 0.15dB, stop-band attenuation of 40dB, respectively Hanning Hamming window Kaiser window Blackman window filter design, comparative analysis of the pros and cons of each method)

数学形态学对信号进行去噪，效果较好，信号扰动特征得到很好保留(Morphology of the signal de-noising effect is good, the signal disturbance characteristics are well retained)