Diff_eq

MATLAB仿真课件，初学者较好的MATLAB学习课件(MATLAB simulation courseware, good for beginners learning courseware MATLAB)

一篇MATLAB环境下的语音识别系统的文章( the article is a speech recognition system in MATLAB environment )

matlab连接数据库SQL，然后打开数据库表格，并读取表格中的数据，进而对数据库进行操作(matlab connect to the SQL, and then open the table, and read the data in the table, then the operations)

BP神经网络容易陷于局部极小值，PSO算法在无约束非线性函数优化方面性能优越，通常可以直接找寻到全局最优解，即使不能搜多到全局最优解，也距离全局最优点不远。当然，基本PSO算法陷入局部极值也是有的。对于这个缺点目前还没有找到比较有效、省市的解决方案。本案例实现利用PSO算法和BP算法共同训练神经网络，先将网络进行PSO算法训练，然后BP算法接着进行小范围精细搜索，PSO算法训练神经网络的本质就是将输出误差函数（即能量函数）看成目标函数，PSO对能量函数进行全局寻找最小值。(BP neural networks are prone to local minimum values. The PS algorithm has superior performance in the optimization of unconstrained nonlinear functions. It can usually find the global optimal solution directly. Even if it can not find more global optimal solutions, it is not far from the global best. Of course, there is also a local extreme of the basic PO algorithm. For this shortcoming, there is no more effective, provincial and municipal solution. This case realizes the use of the SO algorithm and the BP algorithm to train the neural network. First, the network is trained in the SO algorithm, and then the BP algorithm is followed by a small range of fine searches. The essence of the PO algorithm training neural network is to regard the output error function(ie, the energy function) as the objective function, and the PO seeks a global minimum value for the energy function.)

自编的SINS仿真Matlab程序，对初学者还算全，应该有点用处，虽然比较简单，也省些前期编写的麻烦(The SINS self-compiled Matlab simulation program, for beginners fairly full, it should be somewhat useful, though relatively simple, but also save some trouble of pre-prepared)

在MATLAB 中输入和输出TXT 和XLS文件，写的很详细，有参考和学习价值(In MATLAB, the input and output TXT and XLS files, written in great detail, with reference to and learning the value of)

利用MATLAB计算固/液声子晶体的能带结构(Band structure calculation of solid/liquid phononic crystals with MATLAB)

这几段程序分别是matlab环境下图像逻辑操作、交换显示图像、矢量数据的显示、交换显示图像(These paragraphs procedures are logical operations matlab environment image, switching display images, vector data display, switching the display image)

采用MUSIC方法的白噪声频率检测仿真 白噪声中单个正弦信号的频率检测与估计 白噪声中多个正弦信号的频率检测与估计 (MUSIC method using white noise white noise simulation of the frequency of detection of a single frequency sinusoidal signal detection and estimation of white noise in the frequency of a number of sinusoidal signal detection and estimation)

专家PID控制MATLAB程序，在MATLAB5。3以上版本运行(MATLAB experts PID control procedures, the MATLAB5.2. Three versions of Operation)