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this is matlab code to solve various wavelet problem!!!

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.)

说明：  灰色gm11用于不确定关系的时序性的预测，比如降雨量等等(Gray gm11 timing of forecast uncertainty relation for example rainfall, etc.)

matlab code for finite element method

直流电动机机械特性仿真m文件，功能很好的模版，只要填入你的数据，就可以用了(motor character simulink )

一维杆一端固定，一端受拉力，用3节点杆单元显式分析其动态响应(three-nodes bar element)

此matlab程序可用来计算mie散射各项参数，计算时需首先输入几个参数，大家可看看程序，然后就懂了(The matlab calculation mie scattering is used to the parameters)

fuzzy preference rough set based feature evaluation and selection

802.11程序对无线局域网11的系统构成、信号体制、编解码以及OFDM结构等等，MIMO系统等等进行编程实现(802.11 wireless LAN system 11 program constitutes the signal system, codecs and OFDM structure, etc., MIMO systems, etc. can be programmed to achieve)

Application Architecture Guide v2，NET架构设计的参考书籍(Application Architecture Guide v2, NET architecture design reference books)