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Extended stochastic resonance (SR) and its applications in weak mechanical signal processing
Niaoqing HU, Min CHEN, Guojun QIN, Lurui XIA, Zhongyin PAN, Zhanhui FENG,
《机械工程前沿(英文)》 2009年 第4卷 第4期 页码 450-461 doi: 10.1007/s11465-009-0072-3
关键词: extended stochastic resonance (SR) stability analysis of SR scale transform weak signal detection incipient fault detection envelope analysis
Chao WU,Lu-ping XU,Hua ZHANG,Wen-bo ZHAO
《信息与电子工程前沿(英文)》 2015年 第16卷 第9期 页码 796-804 doi: 10.1631/FITEE.1500058
关键词: Threshold detection Discrete chirp-Fourier transform Block zero-padding High dynamic Weak L1 signal acquisition
Pedro PONCE, Therese PEFFER, Arturo MOLINA
《能源前沿(英文)》 2019年 第13卷 第3期 页码 522-538 doi: 10.1007/s11708-018-0562-2
关键词: thermostats perceptions beliefs signal detection theory (SDT) fuzzy signal detection theory (FSDT) chi-square (CS) test
Digital image correlation-based structural state detection through deep learning
《结构与土木工程前沿(英文)》 2022年 第16卷 第1期 页码 45-56 doi: 10.1007/s11709-021-0777-x
关键词: structural state detection deep learning digital image correlation vibration signal steel frame
司徒梦天
《中国工程科学》 2001年 第3卷 第7期 页码 64-69
文章叙述了在地下无线电通信中的两大技术难题——弱信号接收和抗雷电脉冲干扰,提出其解决途径,并介绍解决这些技术难题的关键设备——弱信号抗雷电电报终端机的设计方案,分析该机的性能和给出实验室测试和现场试验的结果。
《能源前沿(英文)》 2022年 第16卷 第6期 页码 943-955 doi: 10.1007/s11708-021-0793-5
关键词: weak grids voltage source (VS) control wind turbine (WT) stabilization control wind farm inertial response
Enhancement of sludge gravitational thickening with weak ultrasound
Panyue ZHANG, Tian WAN, Guangming ZHANG
《环境科学与工程前沿(英文)》 2012年 第6卷 第5期 页码 753-760 doi: 10.1007/s11783-011-0368-5
关键词: activated sludge sonication settlability dry weight extracellular polymeric substances polyelectrolyte
Modeling and analysis of magnetic dipoles in weak magnetic field
WANG Zhaoxia, ZHANG Weimin, LIU Hongguang
《机械工程前沿(英文)》 2008年 第3卷 第2期 页码 222-225 doi: 10.1007/s11465-008-0028-z
关键词: geomagnetic theory important criterion magnetic leakage normal component
Stability analysis on Tingzikou gravity dam along deep-seated weak planes during earthquake
Weiping HE, Yunlong HE
《结构与土木工程前沿(英文)》 2012年 第6卷 第1期 页码 69-75 doi: 10.1007/s11709-012-0146-x
关键词: gravity dam deep-seated weak planes stability against sliding earthquake
Abdolhamid Hatefi-Mehrjardi, Amirkhosro Beheshti-Marnani, Zarrin Es'haghi
《化学科学与工程前沿(英文)》 2019年 第13卷 第4期 页码 823-831 doi: 10.1007/s11705-019-1797-0
关键词: labeled aptasensor transition metal dichalcogenide graphene oxide sodium diclofenac
Hehua ZHU, Qianwei XU, Wenqi DING, Feng HUANG
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 208-224 doi: 10.1007/s11709-011-0111-0
关键词: progressive failure weak-broken rock slope model test bolt
Rahul SHARMA,Sathans SUHAG
《能源前沿(英文)》 2020年 第14卷 第2期 页码 400-409 doi: 10.1007/s11708-017-0459-5
关键词: PV system grid interface feedback linearization inverter LCL filter
Yin ZHAO,Hong-guang XU,Qin-yu ZHANG
《信息与电子工程前沿(英文)》 2016年 第17卷 第2期 页码 173-184 doi: 10.1631/FITEE.1500212
我们在检测和识别金属条形码标签时采用涉及交流场测量的无损评估,为设计提供参考。利用薄皮场理论和二维傅立叶变换中的缺口处的标量势势边界条件,我们引入了高频感应器与包含多个窄锯齿的金属条形码标签相互作用所感应的标量势的解析模型。切开缺口,然后计算金属条形码标签上方自由空间中的磁场。通过磁场的模拟,对金属条形码标签的检测和识别效果进行了定性分析,这是由金属材料,缺口特性,励磁感应器特性以及可用于金属条形码标签设计的其他因素引起的。参考。仿真结果与实验结果吻合很好。
Wavelet design for extracting weak fault feature based on lifting scheme
JIANG Hong-kai, WANG Zhong-sheng, HE Zheng-jia
《机械工程前沿(英文)》 2006年 第1卷 第2期 页码 199-203 doi: 10.1007/s11465-006-0009-z
Weak characteristic information extraction from early fault of wind turbine generator gearbox
Xiaoli XU, Xiuli LIU
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 357-366 doi: 10.1007/s11465-017-0423-4
Given the weak early degradation characteristic information during early fault evolution in gearbox of wind turbine generator, traditional singular value decomposition (SVD)-based denoising may result in loss of useful information. A weak characteristic information extraction based on µ-SVD and local mean decomposition (LMD) is developed to address this problem. The basic principle of the method is as follows: Determine the denoising order based on cumulative contribution rate, perform signal reconstruction, extract and subject the noisy part of signal to LMD and µ-SVD denoising, and obtain denoised signal through superposition. Experimental results show that this method can significantly weaken signal noise, effectively extract the weak characteristic information of early fault, and facilitate the early fault warning and dynamic predictive maintenance.
关键词: wind turbine generator gearbox µ-singular value decomposition local mean decomposition weak characteristic information extraction early fault warning
标题 作者 时间 类型 操作
Extended stochastic resonance (SR) and its applications in weak mechanical signal processing
Niaoqing HU, Min CHEN, Guojun QIN, Lurui XIA, Zhongyin PAN, Zhanhui FENG,
期刊论文
A block zero-padding method based on DCFT for L1 parameter estimations in weak signal and high dynamic
Chao WU,Lu-ping XU,Hua ZHANG,Wen-bo ZHAO
期刊论文
Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico
Pedro PONCE, Therese PEFFER, Arturo MOLINA
期刊论文
Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions
期刊论文
Enhancement of sludge gravitational thickening with weak ultrasound
Panyue ZHANG, Tian WAN, Guangming ZHANG
期刊论文
Modeling and analysis of magnetic dipoles in weak magnetic field
WANG Zhaoxia, ZHANG Weimin, LIU Hongguang
期刊论文
Stability analysis on Tingzikou gravity dam along deep-seated weak planes during earthquake
Weiping HE, Yunlong HE
期刊论文
Signal promoting role of a p-type transition metal dichalcogenide used for the detection of ultra-trace
Abdolhamid Hatefi-Mehrjardi, Amirkhosro Beheshti-Marnani, Zarrin Es'haghi
期刊论文
Experimental study on the progressive failure and its anchoring effect of weak-broken rock vertical slope
Hehua ZHU, Qianwei XU, Wenqi DING, Feng HUANG
期刊论文
Feedback linearization based control for weak grid connected PV system under normal and abnormal conditions
Rahul SHARMA,Sathans SUHAG
期刊论文
Wavelet design for extracting weak fault feature based on lifting scheme
JIANG Hong-kai, WANG Zhong-sheng, HE Zheng-jia
期刊论文