nnpid

一阶导数、二阶导数，矢量归一化（SNV），多元散射校正（MSC），数据中心化，直接信号校正，平滑处理六种光谱数据预处理的方法(A first derivative, second derivative, vector normalization (SNV), multiplicative scatter correction (MSC), the data center of the direct signal correction, smoothing six kinds of spectral data preprocessing methods)

子波分析是一种日益获得广泛应用的信号处理新技 术, 具有良好的时-频局部化特性, 尤其适用于时变及非平 稳信号。本文简述了子波函数与子波展开的基本概念, 利用 展缩子波和调和子波将信号及信号均方值进行时-频两维 分布。最后采用了三种子波分析方法对轴承故障进行诊断, 即使对现有各种方法尚难以诊断的滚动体故障, 也能获得 满意的结果, 说明子波分析的确为机械故障诊断提供了强 有力的分析手段。(Wavelet a nalysis, as a new technique of signal processing , possesses ex cellent characteristic of time-frequency localization and is suitable for analyzing the time-var ying or transient signals. In this paper , the basic concepts of wavelet function and wavelet expansion are briefly introduced. The time frequency distribution of signal and its energy are obtained by decomposition via dilating wavelet and harmanic wavelet. )

最速下降法求解非线性方程组，此程序求解了【6x-sin（y）-50=0 cos（x）-4y-70=0】这一方程的解，大家可以把方程组改换，应用于自己的题目，例子。(Steepest descent method for solving nonlinear equations, this procedure solved 【6x-sin (y)-50 = 0 cos (x)-4y-70 = 0】 solution of this equation, we can change the equations, applications in their own subject, example.)

induction Machine for simulating a machine with matlab in a simulink environment

线性调频信号的循环自相关函数包络 基于循环平稳理论的，LFM信号的循环自相关函数包络matlab仿真程序(LFM cyclic autocorrelation function envelope based on the cyclic theory, LFM signal envelope of the cyclic autocorrelation function matlab simulation program)

matlab实现的turbo编译码仿真。是一款很好的算法实现代码(matlab implementation of the turbo codec simulation. Algorithm is a very good code)

采用matlab计算石墨烯电导率的Kubo公式(Kubo formula for calculating the conductivity of graphene using MATLAB)

基于随机减量法，求解结构的自由衰减曲线，稍作修改即可使用(Based on random decrement method, solving free vibration of curved, slightly modified to use)

This is the simulation of Photoshop magic wand effect of Matlab procedures for image segmentation

二进小波图像增强 MATLAB源代码 希望对您有用(Dyadic wavelet image enhancement MATLAB source hope will be useful to you )