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alpharnd_shuruzhiguji_wuqiongjianyan
对一组滚动轴承振动信号做分布图,包括稳定分布,直方图等。(For a group of vibration signals do distribution, including stable distribution histogram.)
- 2015-08-28 16:21:51下载
- 积分:1
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LpcSineDemo
正弦波的LP建模
能显示原正弦波波形及它的频谱图,LP模型的频谱图,LP模型的极点图,LP模型的脉冲响应图。(This demonstration illustrates the modelling of a sinewave with an LP model
The displays show the sinewave,it spectrum, the spectrum of the LP model,the poles of the LP model and the impuse response of the LP model.)
- 2013-10-19 16:53:06下载
- 积分:1
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rake
实现CDMA系统的RAKE接收,比较最大比合并、等增益合并、、选择合并接收算法的性能,采用3条多径,每条多径之间延迟半个码片,信源输入采用16位WALSH码扩频(Realize RAKE receiver CDMA system to compare maximal-ratio combining, and so gain the merger, and select to receive the combined algorithm, using more than three tracks, each multi-path delay between the half-chip, input source code using 16 WALSH Spread Spectrum)
- 2008-05-26 22:27:15下载
- 积分:1
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NSF_orig_upld
线阵校正的经典NSF方法,针对阵列幅相误差进行。(NSF for ULA selfcalibration)
- 2012-02-14 17:17:09下载
- 积分:1
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cluster VMDaFCM casedat
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)
- 2020-11-11 20:59:44下载
- 积分:1
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扩频与解扩
说明: 扩频与解扩仿真实验,用matlab可以完全实现,图形也正确(The simulation experiment of spread spectrum and despreading can be realized by MATLAB, and the graph is correct)
- 2021-01-15 23:45:01下载
- 积分:1
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sifu3dot10
液压控制系统仿真,应用于液压伺服系统,位置伺服系统!(The hydraulic control system simulation used in hydraulic servo system, the position servo system!)
- 2012-10-07 22:05:58下载
- 积分:1
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KPMstats
KPM stats Hidden Markov Model
- 2011-12-05 23:22:37下载
- 积分:1
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sancanshuguji
在matlab中对服从威布尔分布的寿命数据进行尺寸、特征寿命、形状参数的估计。数据开始只用输入向量n的一组数就好了。(In matlab Weibull distribution of life data size, estimated lifetime characteristic shape parameters. Data starts with only a set number of input vectors n enough.)
- 2015-01-29 14:55:50下载
- 积分:1
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FaceRecognition
Face Recognition based on PLE dataset from CMU(Using Eigenfaces and Template matching)
- 2010-12-04 13:42:13下载
- 积分:1