project5_3main

在MATLAB环境下，使用ICA方法分离单路观测数据的程序！(in MATLAB environment, the use of ICA separated one-way observation data for the procedure!)

自适应滤波算法的一部分源程序，及一些绘图程序(failed to translate)

matlab读取数据文件，进行fft，再写入数据文件，最后比较变化。(matlab to read data files for fft, and then write the data file, and finally compare changes.)

说明：  LU三角分解法求解线性方程组，包含上下三角矩阵型方程组求解程序和LU分解法程序(Lu triangular decomposition method is used to solve linear equations, including upper and lower triangular matrix equations and LU decomposition method)

很难得WEB。内部资料。初学者必看的，也是工程师们的良好的基础资料(A rare WEB. Internal data. Beginners a must-see, but also engineers a good basic information)

文件中主要利用matlab为ADPCM编码提供了一种编码算法，程序中以二进制数值为例，提供了ADPCM编码的编码和解码。(The main advantage of matlab file to ADPCM coding provides a coding algorithm, a program to binary values​ ​ , for example, provides encoding and decoding of ADPCM encoding. )

为了精准、稳定地提取滚动轴承故障特征，提出了基于变分模态分解和奇异值分解的特征提取方法，采用标准模糊C均值聚类(fuzzy C means clustering, FCM)进行故障识 别。对同一负荷下的已知故障信号进行变分模态分解，利用 奇异值分解技术进一步提取各模态特征，通过FCM形成标准聚类中心，采用海明贴近度对测试样本进行分类，并通过计算分类系数和“卜均模糊嫡对分类性能进行评价，将该方法 应用于滚动轴承变负荷故障诊断。通过与基于经验模态分解的特征提取方法对比，该方法对标准FCM初始化条件小敏感，在同负荷故障诊断中表现出更好的分类性能 变负荷故障诊断时，除外圈故障特征线发生明显迁移，其他测试样本故障特征线仍在原聚类中心附近，整体故障识别率保持在100 ，因此，该方法能精确、稳定提取故障特征，为实际滚动轴承智能故障诊断提供参考。( In order to extract fault features of rolling bearing precisely and steadily, a method which is based on variational mode decomposition(VMD) and singular value decomposition was proposed for fault diagnosis using standard fuzzy C means clustering(FCM). First of all, the known fault signals measured in the same load but with different faults were decomposed by VMD, and the modes characteristics were further extracted using singular value decomposition technique,forming the standard clustering centers by FCM, and then the test samples were clustered by a Hamming nearness approach, and the classification performance was uated by calculating classification coefficient and average fuzzy entropy. At last, the method was applied in rolling bearing fault diagnosis under variable loads. By comparing with a method based on EMD, this approach is not sensitive to the initialization of standard FCM, and exhibits better classification performance in the same load fault diagnosis Fo)

说明：  adpcm编码，包括了普通的编码和g.721协议的编码。(adpcm encoding&decoding)

用matlab编写了光纤模式的分析程序，方便对光纤模式进行模拟仿真(Using matlab fiber pattern analysis program to facilitate the simulation of the fiber mode )

在matlab r2010a环境下编写的newton-lagrange算法，可以求解约束优化问题，程序返回目标函数值及拉格朗日乘子。(In matlab r2010a environment prepared newton-lagrange algorithms can solve constrained optimization problems, the program returns the value of the objective function and Lagrange multipliers.)