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为了提高TA8435H的最大工作电流极限，今天对控制板的驱动芯片散热系统作了改进(TA8435H)

说明：  主元素分析源程序代码，实现主元素分析的完整代码(Principal component analysis source code to achieve the complete code for principal component analysis)

This tests the new String object method: concat.

function to calculate gaussian filter

包括了几类MATLAB实用实例源程序，希望大家能所用(MATLAB includes practical examples of the types of source code, hope that we can use)

介绍MATLAB统计方面编程的书籍，适合入门者(An Introduction to Statistics in Matlab)

说明：  AM的解调：里面是用MATLAB的M文件编写的，有相干解调和包络解调(AM demodulation: there is the preparation of MATLAB M-file, with coherent demodulation and envelope demodulation)

说明：  rk-4 四阶龙格库塔法求解代码及结果图片(rk-4 Fourth order Runge Kutta method solution code and result picture)

Welch法：Welch法对Bartlett法进行了两方面的修正：一是选择适当的窗函数w(n)，并在周期图计算前直接加进去，加窗的优点是无论什么样的窗函数均可使谱估计非负。二是在分段时,可使各段之间有重叠，这样会使方差减小。(Welch method: Welch method of Bartlett method amendments in two respects: First, select the appropriate window function w (n), and in the cycle before CALPHAD directly incorporated, plus the advantage of the window, no matter what kind of window function can be so spectral estimation of non-negative. Second, when in subparagraph can overlap between paragraphs, this would reduce the variance.)

matlab光线追迹，计算PSF、OTF、MTF； ZEMAX仿真相应参数的系统，得到光传递情况、MTF(Matlab ray tracing and calculation of PSF, OTF, MTF; ZEMAX simulation parameters corresponding system, optical transmission, the MTF)