mntlyd

这是一个多径信道下源码，有一定的参考价值，希望对大家有用！(This is a multi-path channel under the source, have a certain reference value, useful for all of us hope!)

利用遗传算法求使 达到最大值时的x1和x2的值(using genetic algorithms to achieve the maximum value for the x1 and x2 value)

matlab数值分析程序 matlab程序(matlab program matlab numerical analysis program)

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.)

高斯白噪声激励下二自由度振动系统的蒙特卡罗模拟(Gaussian white noise excitation under two degrees of freedom vibration system Monte Carlo simulation)

GMRES算法，求解大型稀疏线性方程的快速数值解法，方便实时求解(GMRES algorithm is prosed to solve Large- scale sparse linear equations)

有关matlab的数值计算求导方法，对以后数值计算的求导很实用。(About matlab numerical calculation method of derivation, for subsequent numerical derivation is very practical.)

一种很容易理解的svm matlab工具箱,可用于分类，回归，并附有很多示例。(A very easy to understand svm matlab toolbox, can be used for classification, regression, together with many examples.)

介绍了MATLAB下如何实现直接扩频序列的PN伪随机码如何实现同步 并给出结果(Describes how MATLAB directly under the PN spreading sequence PN code to achieve synchronization and gives the results)

power factor improvement by flyback dc to dc converter by controlling the output voltage