segma-delta

检验一个整体是否服从正太分布的matlab程序，并且做出QQ图(Test whether the subject is too a whole distributed program, and plans to make QQ)

IT IS MATLAB FILE FOR LOAD FLOW ANALYSIS USING FAST DECOUPLED METHOD IN POWER SYSTEM

采用matlab针对地震波反应谱进行转换(Seismic wave response spectrum converter)

说明：  主要是用于提取超声导波的时域特征，例如偏度参数、峰度系数、形状系数、离散系数等等(Time Domain Characteristics for Extracting Ultrasound Guided Waves)

实现了chirp信号的分数阶傅立叶变换，表现出了其能量聚集效果，另外对单频、多频、高斯信号进行了分数阶傅立叶变换(The chirp signal Fractional Fourier Transform, showing the effect of its energy gathered addition of single-frequency, multi-frequency Gaussian signal Fractional Fourier Transform)

模式识别中knn和svm的使用，用到matlab的fitcknn和fitcsvm(pattern recognition the use of knn and svm to classify data, using matlab function fitcknn and fitcsvm)

：针对城市电网无功优化规划工作缺乏支撑工具的问题，结合实际业务特点，运用多层次的问题分解和 分层架构设计思想，研发了适用于城市高中压配网的无功优化规划软件模块，包括优化计算、原始数据与结 果数据管理子模块，涵盖现状年及目标年单阶段和多阶段无功优化规划功能。(Research on Reactive Power Planning Module for Urban Power Network)

matlab 直流潮流计算程序 DCpowerflow(matlab DC load flow calculation program DCpowerflow)

说明：  信号的希尔伯特变换 可以提取信号的顺时针夫 瞬时相位 瞬时频率(Hilbert transform of signal can extract the instantaneous frequency of clockwise instantaneous phase of signal)

数字控制系统是一种以数字计算机为控制器去控制具有连续工作状态的被控对象的闭环控制系统。因此，数字控制系统包括工作于离散状态下的数字计算机和工作于连续状态下的被控对象两大部分。我的课题的数字部分（PID）仿真由相应的离散传函实现，运用数字PID对被控对象实行准确控制。通过调节比例（P）、积分（I）、微分（D），使对象的输出达到预期的效果。(Digital control system is a kind of digital computer for the controller to control a continuous state of the object and closed loop control system. Therefore, the digital control system, including work on the discrete state of the digital computer and work in a continuous state of the plant is two parts. My topic of digital section (PID) simulation by the realization of the corresponding discrete transfer function using the digital PID control of the plant is implemented accurately. By adjusting the ratio of (P), integral (I), differential (D), so that the output of the object to achieve the desired results.)