较小样本动态声发射信号多元统计分析技术

来源 :振动、测试与诊断 | 被引量 : 0次 | 上传用户:buebuewong
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
利用多传感信息集成系统,以两组平均年龄对应的受试对象往复运动过程中获取的动态声发射信号和角度信号为对象,研究了适用于较小样本的动态声发射信号多元统计分析技术.通过同步记录的角度信号,将往复运动分解为若干个独立运动周期和运动过程;利用累计概率分布,选取具备较显著差异的特征;结合多元统计技术,减小数据量,建立动态声发射信号的可视化模型,证实了使用较小样本声发射信号实现膝盖骨关节诊断的可行性.
其他文献
The extreme climate of the Canadian Prairies poses a major chal enge to improve yield. Although it is possible to breed for yield per se, focusing on yield-rela
通过对突出危险煤渗透性试验研究,系统分析了不同围压、不同瓦斯压力和不同应力-应变状态条件下突出煤样的渗透特性,分别建立了突出危险煤的渗透性与围压、瓦斯压力和应力-应
A simple and versatile method for the synthesis of 1,5-benzodiazepines from o-phenylenediamine and ketones in the presence of solvents and under solvent-free co
借鉴网络模体的研究方法,对软件网络的局部特性进行了研究.通过对138个开源JAVA软件系统的实验比较,找出了软件系统中3种典型的网络模体,并发现软件系统因规模和交互的不同,
The osteoblast with the β-TCP ceramic was co-cultured. Scanning electron microscopy shows the cells adhered onto β-TCP ceramic surface and grew better, provin
Composite thin films of PbTiO3 nano-crystals and high transparency polymer polyetherketone(PEK-c) for application of non-linear optical devices were prepared by
The structure of Tb:Mo:PbWO4 crystals was investigated by Raman spectra and the results showed that the spectra were varied differently by doping dopants in dif
Ultra low carbon steels by the thermal mechanical control process (TMCP) with less Ni, Cr, and Mo contents have been developed for 550 MPa grade heavy gauge shi
To establish a rapid quantification method for heparinase Ⅰ dtring its production in recombinant Escherichia coli, a translational fusion vector was constructe
To investigate the feasibility of implanting the biocomposite of calcium phosphate cement (CPC)/polylactic acid-polyglycolic acid (PLGA) into animals for bone d