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Hierarchical discriminating sparse coding for weak fault feature extraction of rolling bearings
期刊论文
Reliability Engineering and System Safety, 2019, 卷号: 184, 页码: 41-54
作者:
Jiao, Jinyang
;
Zhao, Ming
;
Lin, Jing
;
Liang, Kaixuan
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2019/11/19
Dictionary-based
Harmonic to noise ratios
Prior knowledge
Rolling bearings
Simulated signals
Sparse coding
Traditional approaches
Weak fault feature extraction
A Novel Method to Reduce of Cogging Force in a Linear Flux-Switching Permanent Magnet Brushless AC Machine
期刊论文
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY, 2019, 卷号: 14, 期号: 2, 页码: 653-662
作者:
Meng, Gaojun[1]
;
Yuan, Ye[2]
;
Sun, Yukun[3]
;
Liu, Haitao[4]
;
Zhu, Zhiying[5]
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  |  
浏览/下载:7/0
  |  
提交时间:2019/12/24
Permanent magnet linear flux-switching permanent magnet (LFSPM)
Permanent magnet (LFSPM)
Cogging force
Time-varying signals
x-Domain repetitive controller
Harmonic currents
Tests for power flow measurement and vibrational energy estimation
期刊论文
Zhendong yu Chongji/Journal of Vibration and Shock, 2014, 卷号: 33, 期号: [db:dc_citation_issue], 页码: 194-198
作者:
Qiao, Bai-Jie
;
Zhao, Tong
;
Chen, Xue-Feng
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  |  
浏览/下载:3/0
  |  
提交时间:2019/12/03
Acceleration signals
Driving point impedances
Energy estimation
Experimental investigations
Loss factor
Power flows
Second harmonic waves
Vibrational energies
Photonic Microwave Applications of the Dynamics of Semiconductor Lasers
期刊论文
ieee journal of selected topics in quantum electronics, 2011, 卷号: 17, 期号: 5, 页码: 1198-1211
Qi XQ
;
Liu JM
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浏览/下载:22/0
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提交时间:2012/02/06
PHASE-LOCK LOOP
RADIO-OVER-FIBER
MILLIMETER-WAVE SIGNALS
MULTILOOP OPTOELECTRONIC OSCILLATOR
EXTERNAL OPTICAL-INJECTION
HARMONIC FREQUENCY LOCKING
PERIOD-ONE OSCILLATIONS
MODULATION BANDWIDTH
NOISE-REDUCTION
RING-LASER
Logic circuit for harmonic analysis based on enhanced PLL
期刊论文
2010, 2010
Li Gen
;
Pang Hao
;
Xu Jianfei
;
Wang Zanji
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  |  
浏览/下载:3/0
Method for recovering dynamic position of photoelectric encoder (EI CONFERENCE)
会议论文
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
Wu Y.-Z.
;
Wan Q.-H.
;
Zhao C.-H.
;
Sun Y.
;
Liang L.-H.
;
Liu Y.-S.
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  |  
浏览/下载:9/0
  |  
提交时间:2013/03/25
This paper presents a method to recover dynamic position of photoelectric encoder. While working at dynamic state
original outputs of the photoelectric encoder are in theory two sine or triangular signals with a phase difference of /2. However
there are still deviations of actual output signals. Interpolating on the basis of this deviation signal will result in interpolation errors. In dynamic state
true original signal data obtained by data acquisition system is a time equation. Through processing these data by data equiangular and harmonic analysis
the equation will be converted from time domain to position domain and an original position equation can be formed. Then the interpolation errors also can be obtained. By this method
the interpolation errors can be checked in dynamic state and it can also provide electric interpolation basis so that to improve dynamic interpolation precision of the encoder. Software simulation and experimental analysis all prove the method effective. This method is he basis in theory for precision checking and calibration in motion. 2009 SPIE.
高吸收强度下的波长调制光谱
期刊论文
Chin. Opt. Lett., 2007, 卷号: 5, 期号: 9, 页码: 552, 555
王允韬
;
蔡海文
;
耿建新
;
潘政清
;
陈迪俊
;
方祖捷
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  |  
浏览/下载:1214/246
  |  
提交时间:2009/09/18
波长调制光谱
谐波信号
高吸收强度
Wavelength modulation spectroscopy (WMS)
Harmonic signals
Fourier expansion
Numerical integration
Gas detection
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