about-harris

信号处理技术源代码系列2，版权为原作者所有，使用者与原作者联系。(Signal Processing Series 2 source code, the copyright for the original author of all, the user associated with the original author.)

simulation modulate & demod FM

此程序演示了如何在Matlab中调用Fortran77编写的函数，包含参数虚实结合应该注意的问题。(illustrate how a MATLAB program can call a FORTRAN77 function, passing data to the function, and receiving results from the FORTRAN77 function.)

几片svm的论文，大家可以参考一下。我是初学者，所以多多包涵 (few tablets svm paper, we can take a look. I was a beginner, so bear with me)

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：  风力发电系统中基于mt坐标系的发电机模块的建模仿真（matlab/simulink）(Mt-based wind power system generator module coordinate system modeling and simulation (matlab/simulink))

PLL锁相环运用在矢量变换中的matlab的仿真模型，试试看咯！(PLL is used in the vector transformation of matlab simulation model, try slightly!)

运用西奥道生非定常气动力模型计算气动力，采用p-k法计算二元翼段的颤振临界速度(The aerodynamic force is calculated by the unsteady aerodynamic model of Theo road. The critical flutter velocity of the two element airfoil is calculated by the P-K method)

任何几何形状的导体或介质的麦克斯韦方程的时域有限差分代码(This a program solves Maxwell Equations for arbitrary geometries of objects with different conductivity and permitivity using the FDTD algorithm. Only first oder absorbing boundary conditions are applied. It is possible to create mpeg-movies. )

matlab code for inter and intra row permutation also showing the effect of asymmetric turbo code performance.