ISM

一个计算mcs-8下的小区平均频谱效率的小程序(A calculating mcs-8 under the average spectral efficiency of small residential program)

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)

image brightness threshholding and contrasting from gonzalves book of digital image processing

wavelet, just dependent on matlab 6.0

牛顿下山法算法用matlab实现源程序，完整无缺，运行无错误，正常引用！(Newton descent method algorithm implementation using matlab source, intact, run the error-free, normal reference! )

rls滤波器设计程序（用matlab编写的程序）(rls filter design process (using Matlab prepared by the procedure))

Nonlinear equation solver

改程序为一个matlab使用串口的实例程序，能够够在工程开发中提供一个无硬件测试提供帮助。(this is an example matlab program of using serial port, it s convenient to use this for project test of data acquisition application .)

the file contains detection and estimation theroy codes

This mfile is the simulation of CSTR control with new GPC