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Using Matlab to solve some engineering problems

全国大学生数学建模比赛赛前练手，2011年B题附件2.(National Mathematical Contest in Modeling practice before hand, 2011 B title in Annex 2.)

纯语音和带噪语音,信噪比,带噪语音的产生,语音信号的预处理一——消除趋势项和直流分量(Pretreatment with a pure voice and noisy speech signal to noise ratio, resulting in noisy speech, the speech signal- to eliminate the trend term and DC components)

很优良的PID控制器设计仿真程序与模型,经过严格检验(Very good simulation of PID controller design procedures and models, to undergo a rigorous inspection)

AND规则程序，里面有详细的介绍，可以根据自己的想法添加元素(AND rules and procedures, which are described in detail, you can add elements according to their own ideas)

A viable particle swarm optimization to update algorithm, MATLAB code to run correctly simulation, ease of use

智能天线中多单元圆形天线阵的波达方向估计(Smart antennas in multi-element circular antenna array of the Direction of Arrival Estimation)

adjacency matrix. This is an NV by NV matrix A in which A(I,J) is the number of edges between nodes I and J. Ordinarily, this value is either 0 or 1, although there are natural extensions to this idea.(returns the adjacency matrix of a graph.)

通过MATLAB平台能实现文件格式的相互转换，比如dat文件到txt文件和txt文件到xls文件等，通过相互转换文件格式消除文件加载和导入导出的限制。(By MATLAB platform enables mutual conversion file formats, such as dat files to txt file and txt files to xls files, erase the files by file format conversion and import and export restrictions load.)

matlab实现的1范数优化代码，实现绝对值偏差最小的算法。(matlab norm to achieve a optimized code to achieve the smallest absolute deviation algorithm.)