scholarly journals Transient synchronization mutation of ring coupled Duffing oscillators driven by pulse signal

2011 ◽  
Vol 60 (10) ◽  
pp. 100509
Author(s):  
Wu Yong-Feng ◽  
Zhang Shi-Ping ◽  
Sun Jin-Wei ◽  
Peter Rolfe ◽  
Li Zhi
Keyword(s):  
Pulse Signal ◽  
Coupled Duffing Oscillators

scholarly journals Detection and parameter estimation of weak pulse signal based on strongly coupled Duffing oscillators

2019 ◽  
Vol 68 (8) ◽  
pp. 080501
Author(s):  
Bao-Feng Cao ◽  
Peng Li ◽  
Xiao-Qiang Li ◽  
Xue-Qin Zhang ◽  
Wang-Shi Ning ◽  
...  
Keyword(s):  
Parameter Estimation ◽  
Pulse Signal ◽  
Strongly Coupled ◽  
Weak Pulse ◽  
Coupled Duffing Oscillators

scholarly journals Identification of the State of Electrical Appliances with the Use of a Pulse Signal Generator

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 673
Author(s):  
Augustyn Wójcik ◽  
Piotr Bilski ◽  
Robert Łukaszewski ◽  
Krzysztof Dowalla ◽  
Ryszard Kowalik
Keyword(s):  
Measurement System ◽  
Cross Correlation ◽  
Pulse Signal ◽  
Signal Generator ◽  
Experimental Results ◽  
The Novel ◽  
End User ◽  
Standard Classification ◽  
Electrical Appliance

The paper presents the novel HF-GEN method for determining the characteristics of Electrical Appliance (EA) operating in the end-user environment. The method includes a measurement system that uses a pulse signal generator to improve the quality of EA identification. Its structure and the principles of operation are presented. A method for determining the characteristics of the current signals’ transients using the cross-correlation is described. Its result is the appliance signature with a set of features characterizing its state of operation. The quality of the obtained signature is evaluated in the standard classification task with the aim of identifying the particular appliance’s state based on the analysis of features by three independent algorithms. Experimental results for 15 EAs categories show the usefulness of the proposed approach.

Computerized Wrist Pulse Signal Diagnosis Using Modified Auto-Regressive Models

2009 ◽  
Vol 35 (3) ◽  
pp. 321-328 ◽  
Author(s):  
Yinghui Chen ◽  
Lei Zhang ◽  
David Zhang ◽  
Dongyu Zhang
Keyword(s):  
Pulse Signal ◽  
Auto Regressive

Application of the Pulse Electro-Osmosis Technology in the Control of Seepage of the Underground Structure

2011 ◽  
Vol 255-260 ◽  
pp. 752-756 ◽  
Author(s):  
Jiang Miao Zhu ◽  
Zhi Xin Li ◽  
Ying Wang ◽  
Ran Li
Keyword(s):  
Electric Pulse ◽  
Underground Structure ◽  
Pulse Signal ◽  
Economic Loss ◽  
Production Engineering ◽  
Safety Hazard ◽  
Construction Engineering ◽  
Water Seepage ◽  
Potential Safety ◽  
Electro Osmosis

The water seepage of underground structure is the serious problem in the construction engineering, and becomes one of the most harm in current infrastructure with the huge potential safety hazard and economic loss. The electro-osmosis technology is once widely used in the fields of soft ground stabilization of rock engineering, the biological pharmacy and the oil production engineering in China. This paper referred experiences of overseas, combined electric pulse signal and the electro-osmosis technology to reduce seepage of the underground structure, and solved underground structure water seepage problems. The paper comprehensively analyzed the research status of the technology at home and abroad and its feasibility in theory, also introduced the general implementation methods of projects, and carried on the comparison of the pulse electro-osmosis technology and the traditional moisture-proof technology in application.

The parameters estimation of LFM pulse signal based on FrFT

2017 ◽  
Author(s):  
Hui-Ling Fan ◽  
Zhou Xu ◽  
Shui-Ying Cheng ◽  
Chen Liu
Keyword(s):  
Pulse Signal ◽  
Parameters Estimation

Fault Diagnosis of Wet-Shift Clutch Based on STFT and Wavelet

2011 ◽  
Vol 301-303 ◽  
pp. 1560-1567 ◽  
Author(s):  
Man Chen ◽  
Biao Ma
Keyword(s):  
Fault Diagnosis ◽  
Fourier Analysis ◽  
Wavelet Decomposition ◽  
Pulse Signal ◽  
Background Signal ◽  
Vibration Signals ◽  
Diagnosis Method ◽  
Friction Plate ◽  
Short Time ◽  
Shift Clutch

The paper analyzes the failure mechanism of the wet shifting clutch, and puts forward the concept that the deformation of the clutch friction plate leads to the irregular collision between the driving and driven sides of disengaged clutch and accordingly forms the transient pulse signal; the short-time Fourier analysis on the vibration signals of failed clutch obtained via test proves such concept. The transient pulse signal in the relatively strong background signal is clearly extracted through the wavelet decomposition after zero setting, and an efficient wet shifting clutch fault diagnosis method is hereby formed.

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