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用函数输出不同占空比信号的波形和功率谱密度，一段简单的matlab程序(Function output duty cycle signal with different waveforms and power spectral density, a simple piece of matlab program)

说明：  信号预处理，提取PCG特征，利用机器学习进行分类（含数据）(Signal preprocessing, PCG feature extraction, machine learning for classification (including data))

一种基于网格的三角定位算法的文章供大家一起分享(WSN)

模糊控制及其MATLAB应用，本书从工程应用与实践的角度，对模糊推理与模糊控制系统做了深入浅出的介绍，并以多个实例详细介绍模糊推理学习及其在matlab模糊推理工具箱中的实现(Fuzzy Control and MATLAB applications, engineering applications and practice book from the perspective of fuzzy reasoning and fuzzy control system to do a simple introduction, and more detailed examples of its application in fuzzy inference learning matlab fuzzy inference toolbox achieve)

用于数据建模时的样本集自动划分方法，包括RS、KS、SPXY，方法简单实用(Method of automatic sample set time for data modeling, including RS, KS, SPXY, simple and practical method)

模极大值滤波，对信号进行分解和重构。所采用信号是matlab自带信号。(Modulus maxima filtering, the signal decomposition and reconstruction. Signal is used in signal matlab own.)

雷达/声纳正处理，常规巴特利特波束形成仿真。假设入射信号角度正横方向，M元接收阵对接收信号进行正负九十度的扫描。(Conventional beamforming for RADAR/SONAR. The source is supposed to be the broadband. there are M element array using for receiving.)

it is choas for optimazation0

电压型PWM整流器整流，svpwm，电压电流双环控制(Voltage type PWM rectifier rectification, svpwm, voltage and current double loop control)

　用水量预测在城市建设规划、供水系统的调度 管理中都具有重要作用。常用的预测方法可分为两 类,一类是解释性预测方法,即找出被预测量的各影 响因素,建立回归分析模型(Water demand in urban planning, regulation and management of water systems has an important role. Commonly used forecasting methods can be divided into two categories, one is an explanatory forecasting method, which is predicted to identify the amount of the influencing factors, a regression analysis model)