FreqMeter_v41

说明：  基于蚁群算法的PID控制参数优化Matlab源码(PID Control Based on Ant Colony Optimization Algorithm for Matlab source)

PCA算法的matlab程序。本代码是对一维信号进行PCA降维处理的matlab函数。(PCA algorithm matlab program. This code is a one-dimensional signal processing PCA dimensionality reduction matlab function.)

运用此程序来去除光谱中的宇宙射线。。。。。。。。。。。。。。(use this promgram to denoise ray from unniversal.)

This is a paper about Medical Care!

说明：  声音信号 显示 时域 频域 对声音的预处理观察

一个端点检测程序，用matlab编写。endpoint detection(an endpoint detection procedures, using Matlab prepared. Endpoint detection)

光伏电池阵列输出功率受光照强度和温度变化的影响，因此最大功率点跟踪（MPPT）技术广泛应用于光伏系统中。在所有最大功率点(MPP)控制策略中，扰动观察（P&O）MPPT算法因易实现被广泛应用，然而它的缺点是在稳定工作状态下工作点通过MPP 时会导致能量振荡损耗，并且在光照强度或温度发生突变时表现较差的动态响应。在本文中，提出一种改进型变步长扰动观察MPPT 算法，此方法依据工作点动态调整步长变化，与传统固定步长方法比较，本文提出的方法能有效地提高MPPT 速度和转换效率，通过仿真和实验结果分析，验证了此改进算法的可行性。(PV array output power by light intensity and temperature changes, so the maximum power point tracking (MPPT) technology is widely used in photovoltaic systems. In all the maximum power point (MPP) control strategy, the perturbation and observation (P & O) MPPT algorithm because easy to implement is widely used, but its disadvantage is the steady-state operating point by the MPP causes energy oscillations loss, and in the light intensity or temperature mutated poor performance dynamic response. In this paper, we propose a modified variable step size perturbation and observation MPPT algorithm, this method is based on dynamically adjusting the operating point changes in steps, with the traditional fixed-step methods, the proposed method can effectively improve the speed and efficiency MPPT, The simulation and experimental results verify the feasibility of this algorithm.)

利用GUI制作另一个简单的多种常见天线方向图的二维和三维制图界面。适合初学者掌握GUI功能和天线基础。(A simple GUI for some common antenna direction graph with 2-dimension and 3-dimension.)

Runge Kutta 4th order

说明：  esn代码，稍加修改，不一定正确，上传分享(The modified ESN code is not necessarily correct. Upload and share the code.)