On Energy Distribution Characteristics of Froth Images

2015 ◽  
pp. 635-642
Author(s):  
Yanpeng Wu ◽  
Xiaoqi Peng ◽  
Yanpo Song ◽  
Qian Jiang
Keyword(s):  
Energy Distribution ◽  
Distribution Characteristics

Leak Detection for City Gas Pipelines Based on Instantaneous Energy Distribution Characteristics

2010 ◽  
Author(s):  
Zhigang Chen
Keyword(s):  
Energy Distribution ◽  
Distribution Characteristics ◽  
Physical Relationship ◽  
Correlative Analysis ◽  
Relative Contribution ◽  
Input And Output ◽  
City Gas ◽  
State Variation ◽  
Characteristic Signal ◽  
Instantaneous Energy

Because of the smallness of flux and low of pressure it is difficult to judge the characteristic signal when leak occurs. In this paper, a new instantaneous energy (IE) distribution characteristics extraction method based on Hilbert-Huang transformation (HHT) was presented and it was used to recognize different states in pipelines, such as, normal state, valve operating, compressor operating and leak. Firstly, the physical relationship between instantaneous energy and structural state variation of a system was analyzed theoretically. With HHT, the instantaneous energy distribution feature of an unstable pressure signal was obtained, according to the relative contribution method of the instantaneous energy, its noise was eliminated. In order to judge the leak the typical character of the instantaneous energy of pressure in the input and output ends was discussed using correlative analysis. The experimental results showed that this method is effective.

Energy-Concentrating Optimization Based on Energy Distribution Characteristics of MCR WPT Systems With SS/PS Compensation

2020 ◽  
Vol 67 (12) ◽  
pp. 10410-10420 ◽  
Author(s):  
Wanlu Li ◽  
Quandi Wang ◽  
Jianwei Kang ◽  
Yingcong Wang
Keyword(s):  
Energy Distribution ◽  
Distribution Characteristics

scholarly journals The energy distribution characteristics of a cylindrical cased charge with two end caps

2020 ◽  
Vol 1507 ◽  
pp. 032048
Author(s):  
W Liao ◽  
J W Jiang ◽  
J B Men ◽  
S Y Wang ◽  
M Li
Keyword(s):  
Energy Distribution ◽  
Distribution Characteristics ◽  
End Caps
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