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Lian Jijian,Li Chengye,Liu Fang,Ma Bin
Strategic Study of CAE 2011, Volume 13, Issue 12, Pages 38-44
In the long-term service period, many factors may lead to serious damages and deficiencies to the structure, such as complicated working conditions, inadequate investigation and design, poor management, aging of structure, etc. Therefore, it's very important to study the online monitoring method for flood discharge. According to the special advantages of HHT in instantaneous characteristics analysis and signal processing, an online monitoring method for flood discharge structure damage based on HHT is put forward in this paper. Firstly, after obtaining the HHT energy spectrum of measured responses, the energy distribution vector, defined as ηi , can be calculated. Then, because of the η i differences between undamaged and damaged situations, we determine the structure anomaly indexes and the warning threshold. Finally, having been calculating the anomaly indexes of adjacent time periods, the damage online monitoring can be realized. The results from the numerical simulation test of a guide wall demonstrate that the anomaly indexes mentioned above can accurately identify the structure damage and have anti-noise ability to some degree. However, the further research for estimating the damage location and degree need to be developed in the next period.
Keywords: flood discharge structure Hilbert-Huang Transform the energy distribution vector anomaly index warning
HHT-based crack identification method for start-up rotor
Bing LI, Chunlin ZHANG, Zhengjia HE
Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3, Pages 300-304 doi: 10.1007/s11465-012-0328-1
This paper presents a crack identification method for start-up rotor based on the Hilbert-Huang transformthis method, the instantaneous frequency (IF) of each intrinsic mode function is obtained through the Hilberttransform, and the spectrum of IF is calculated accordingly.The results of the experiment show that HHT is a better tool for crack detection than fast Fourier transform
Keywords: cracked rotor start-up Hilbert-Huang transform (HHT)
The Study of an Improved Algorithm About Hilbert Energy Spectrum
Yang Jianwen,Jia Minping,Xu Feiyun,Hu Jianzhong
Strategic Study of CAE 2005, Volume 7, Issue 7, Pages 55-59
The Hilbert energy spectrum's principle in HHT is analyzed in the paper; Aimed to solve the endinstantaneous spectrum figure, the cause is researched and ARMA model is introduced in the calculation of Hilbertmethods, the advanced method is proved to be able to improve the end problem effectively and optimize the Hilbert
Keywords: Hilbert transform the distortion of end instantaneous parameter intrinsic mode function
Abderrahim ALLAL,Boukhemis CHETATE
Frontiers in Energy 2016, Volume 10, Issue 2, Pages 176-191 doi: 10.1007/s11708-015-0386-2
Keywords: motor incipient broken bar extended Park’s vector approach spectral analysis inter-turn short-circuit Hilberttransform
Efficient coherent detection of maneuvering targets based on location rotation transform and non-uniformfast Fourier transform Research Articles
Ke Jin, Tao Lai, Yan-li Qi, Jie Huang, Yong-jun Zhao,jinke_xd@outlook.com
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 8, Pages 1251-1266 doi: 10.1631/FITEE.1900272
Keywords: Coherent integration Maneuvering target Parameter estimation Location rotation transform (LRT) Non-uniformfast Fourier transform (NuFFT)
Deepak PALIWAL,Achintya CHOUDHURY,T. GOVANDHAN
Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2, Pages 130-141 doi: 10.1007/s11465-014-0298-6
Keywords: Fault detection spline wavelet continuous wavelet transform fast Fourier transform
frequency synthesizer with optimized VCO and reduced current mismatch CP
Chunhui Li, Lijun Sun, Jiarong Liu, Yang Zhang, Haiyang Li, Huaxiang Wang,ChunhuiLi@tju.edu.cn,sunlijun@tju.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 2, Pages 141-286 doi: 10.1631/FITEE.1900558
Keywords: processing method Two-phase flow condition Quadrature demodulation Sliding discrete time Fourier transform(SDTFT) Hilbert transform
A reversibility-gain model for integer Karhunen-Loève transform design in video coding
Xing-guo ZHU,Lu YU
Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10, Pages 883-891 doi: 10.1631/FITEE.1500071
Keywords: Integer transform Karhunen-Loè ve transform (KLT) Integer-KLT Transform coding Video coding
Yuheng FENG, Xuguang JIANG, Yong CHI, Xiaodong LI, Hongmei ZHU
Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2, Pages 186-192 doi: 10.1007/s11783-011-0322-6
Keywords: hazardous waste combustion pyrolysis thermogravimetric coupled with Fourier transform infrared analysis
Sparse fast Clifford Fourier transform Article
Rui WANG, Yi-xuan ZHOU, Yan-liang JIN, Wen-ming CAO
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 8, Pages 1131-1141 doi: 10.1631/FITEE.1500452
Keywords: Sparse fast Fourier transform (sFFT) Clifford Fourier transform (CFT) Sparse fast Clifford Fouriertransform (SFCFT) Clifford algebra
A new acoustic emission source location technique based on wavelet transform and mode analysis
JIAO Jing-pin, HE Cun-fu, WU Bin, FEI Ren-yuan, WANG Xiu-yan
Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3, Pages 341-345 doi: 10.1007/s11465-006-0006-4
Keywords: s propagation frequency emission signal signal propagation dispersive
Peng ZHOU, Zhike PENG, Shiqian CHEN, Yang YANG, Wenming ZHANG
Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2, Pages 292-300 doi: 10.1007/s11465-017-0443-0
Keywords: rotary machines condition monitoring fault diagnosis GPTFT SCI
Huiquan Wu, Erik Read, Maury White, Brittany Chavez, Kurt Brorson, Cyrus Agarabi, Mansoor Khan
Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3, Pages 386-406 doi: 10.1007/s11705-015-1533-3
Keywords: process analytical technology (PAT) Fourier-transform infrared (FTIR) spectroscopy partial least squares
Subspace transform induced robust similarity measure for facial images
Jian Zhang, Heng Zhang, Li-ling Bo, Hong-ran Li, Shuai Xu, Dong-qing Yuan,zhangjian@jou.edu.cn,zhangheng@jou.edu.cn
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 9, Pages 1267-1412 doi: 10.1631/FITEE.1900552
Extension Detecting Technology
Yu Yongquan
Strategic Study of CAE 2001, Volume 3, Issue 4, Pages 88-94
Detecting is a key technology which has widely been used in almost all fields. However, there are two problems in traditional detecting methods. First, some physical value can not be detected; Second, it is difficult to improve the accuracy according to the way currently in effect. In this paper, based on the transformation concept of the contradiction, a new detecting technology—extension detecting technology (EDT) , which is totally different from the existing ones is developed. EDT takes advantage of the concept of matter element and the related methods of extrinsic. It use the transformation of matter element to study detecting technology. In order to solve detecting problems of undetectable physical value the related concepts, basic principle and frame of extension detecting technology are introduced. An implementing way for its application to engineering is proposed, and an example is given as well.
Keywords: extension detecting technology extrinsic transform of matter element
Title Author Date Type Operation
Study on online monitoring method for flood discharge structure damage based on Hilbert-Huang Transform
Lian Jijian,Li Chengye,Liu Fang,Ma Bin
Journal Article
HHT-based crack identification method for start-up rotor
Bing LI, Chunlin ZHANG, Zhengjia HE
Journal Article
The Study of an Improved Algorithm About Hilbert Energy Spectrum
Yang Jianwen,Jia Minping,Xu Feiyun,Hu Jianzhong
Journal Article
A new and best approach for early detection of rotor and stator faults in induction motors coupled to variable loads
Abderrahim ALLAL,Boukhemis CHETATE
Journal Article
Efficient coherent detection of maneuvering targets based on location rotation transform and non-uniformfast Fourier transform
Ke Jin, Tao Lai, Yan-li Qi, Jie Huang, Yong-jun Zhao,jinke_xd@outlook.com
Journal Article
Identification of faults through wavelet transform vis-à-vis fast Fourier transform of noisy vibration
Deepak PALIWAL,Achintya CHOUDHURY,T. GOVANDHAN
Journal Article
frequency synthesizer with optimized VCO and reduced current mismatch CP
Chunhui Li, Lijun Sun, Jiarong Liu, Yang Zhang, Haiyang Li, Huaxiang Wang,ChunhuiLi@tju.edu.cn,sunlijun@tju.edu.cn
Journal Article
A reversibility-gain model for integer Karhunen-Loève transform design in video coding
Xing-guo ZHU,Lu YU
Journal Article
Thermogravimetric coupled with Fourier transform infrared analysis study on thermal treatment of monopotassium
Yuheng FENG, Xuguang JIANG, Yong CHI, Xiaodong LI, Hongmei ZHU
Journal Article
Sparse fast Clifford Fourier transform
Rui WANG, Yi-xuan ZHOU, Yan-liang JIN, Wen-ming CAO
Journal Article
A new acoustic emission source location technique based on wavelet transform and mode analysis
JIAO Jing-pin, HE Cun-fu, WU Bin, FEI Ren-yuan, WANG Xiu-yan
Journal Article
Non-stationary signal analysis based on general parameterized time--frequency transform and its application
Peng ZHOU, Zhike PENG, Shiqian CHEN, Yang YANG, Wenming ZHANG
Journal Article
Real time monitoring of bioreactor mAb IgG3 cell culture process dynamics via Fourier transform infrared
Huiquan Wu, Erik Read, Maury White, Brittany Chavez, Kurt Brorson, Cyrus Agarabi, Mansoor Khan
Journal Article
Subspace transform induced robust similarity measure for facial images
Jian Zhang, Heng Zhang, Li-ling Bo, Hong-ran Li, Shuai Xu, Dong-qing Yuan,zhangjian@jou.edu.cn,zhangheng@jou.edu.cn
Journal Article