5HZ_Sin_Wave

本文件提供了几个数值分析中的Matlab小程序。水平有限，多多海涵。(This document provides several numerical analysis of Matlab small programs. Limited, and many Haihan.)

用有限元进行桁架结构应力应变的计算绘图实例的分析。(Using the finite element calculation drawing of the truss structure of stress-strain analysis of the instance.)

统计决策建立在统计分析和统计预测的基础上，是一种定量决策 。统计决策是在不确定情况下，应用概率来进行决策的计算和分析，是一种概率决策。 (Statistical decision based on statistical analysis and statistical prediction, based on a quantitative decision-making. Statistical decisions under uncertainty, applied probability calculations and analysis for decision-making, is a probabilistic decision.)

对声音信号采样分析频谱,改变采样率，播放，音频信号加噪声(Spectrum analyzer of sound files)

matlab file for image processing

code matlab simulation FDMA

用局部参数最优化方法设计一个模型参考自适应系统,可调增益的初值Kc(0)=0.2，给定值r(t)为单位阶跃信号，即r(t)=A×1(t)。 要求： 1把连续系统离散化(采样时间可取0.1)。 2编制并运行这个系统的计算机程序(注意调整B值，使系统获得较好的自适应特性)。 3记录ym、yp的曲线 记录kp×kc的曲线 记录广义输出误差e的变化曲线。 4在参数收敛后，让Kp=2变为Kp=1，重新观察Kp×Kc及e的变化曲线。 5找出在确定的B值下，使系统不稳定的A值(阶跃信号的幅值)，并与用劳斯稳定判据计算的结果比较。 (With local parameter optimization method to design a model reference adaptive system, adjustable gain initial Kc (0) = 0.2, for a given value of r (t) for the unit step signal that r (t) = A × 1 ( t). Requirements: a continuous system discretization (sampling time of 0.1 preferred). 2 compiled and run the system computer program (Note B to adjust the value of the system to obtain better adaptive characteristics). 3 records ym, yp curve record kp × kc curve records generalized output error e curves. 4 parameter convergence, let Kp = 2 into the Kp = 1, re-observed Kp × Kc and e curves. B-5 to find value in determining the next, making the system unstable A value (step signal of amplitude), and using Routh stability criterion and the comparison of the results calculated.)

linedata 33bus distribution system

说明：  这个M代码是从一位学者的Python修改而来的 卡尔曼滤波算法对室内温度的估计。 下面是Python版本的注释：卡尔曼过滤器的Python示例演示(This M code is modified from Andrew D. Straw's Python implementation of Kalman filter algorithm. Below is the Python version's comments: Kalman filter example demo in Python)

MATLAB 各种滤波器的MATLAB程序，自适应，FFT等等(MATLAB Program about lms,fftlms ,adep and so on)