nnt_iclassification

一维沃尔什和哈达马变换核计算程序，数字图像处理的基础算法(Walsh and Hada Ma Weaver transformation of a nuclear computer program based on digital image processing algorithms)

这是个扩展kalman滤波的历程，对初学最优估计饿人应该很有帮助。(This is a course of extended kalman filtering, optimal estimation of beginner hungry people should be helpful.)

做过模糊PID的朋友很多遇到过这种问题，就是仿真启动不起来，停留在e-7等地方或者仿真很慢，自次上次有个朋友说改变步长能解决这个问题，最后的曲线能达到满足要求的时候，我让他找个例子他就没有后文，以前我做了很多这样的模糊PID，但靠改变步长并没有解决问题，仿真曲线直接发散出去了，我自己这两天也总在思考这个问题，通过不断的调试总结，明白了不少，给遇到这个问题的朋友讲解一下解决办法吧，以一个例子详解：(Done a lot of friends of the fuzzy PID encountered this problem, simulation start up, stay in the e-7 and other local or simulation is very slow, have a friend who said to change the step size to solve this problem since the times the last, the finalcurve to achieve to meet the requirements when I asked him to find examples of his later, I have done a lot of fuzzy PID, but by changing the step does not solve the problem, the simulation curve directly divergence out, Itwo days always thinking about this problem, summarized by the debug and understand a lot of friends to experience this problem to explain the solution, an example Detailed:)

本程序是关于常微分方程初值问题数值解的欧拉算法及线性多步法的matlab代码，对初学者有帮助，例题用的李荣华的微分方程数值解法第一章的习题(This program is about Euler algorithm for numerical initial value problem of ordinary differential equations and linear multistep method matlab code, useful for beginners, examples of Li Ronghua s numerical solution of differential equations of the first chapter exercises )

实现了zf和MMSE预编码下的信道容量，对朋友们的学习会有一定的帮助(ZF and MMSE precoding channel capacity, with the help of some friends learning will be )

磁场线分布，根据一个磁场，然后仿真出它的强弱分布等等吧 磁场线分布，根据一个磁场，然后仿真出它的强弱分布等等吧 磁场线分布，根据一个磁场，然后仿真出它的强弱分布等等吧(cichangxianfenbucichangxianfenbucichangxianfenbucichangxianfenbucichangxianfenbucichangxianfenbu)

Spectrum Analysis teaching aid

用于计算Zernike多项式系数在缩放、偏心、旋转后的值(Calculating the values of Zernike polynomial coefficients after scaling, eccentricity and rotation)

simulink中经过改造后重新搭建的同步电机模型(After transforming in simulink to build the model of the synchronous motor)

1,通用变频器的建模和参数设置 2,通用变频器的工作原理介绍(1，Universal inverter modeling and parameter set 2, Universal inverter works)