scholarly journals Energy-entropy relation for asymptotically Lifshitz spacetimes with universal horizons

2021 ◽  
Vol 103 (8) ◽  
Author(s):  
Jonathan Cheyne ◽  
David Mattingly
Keyword(s):  
Energy Entropy ◽  
Entropy Relation

scholarly journals A Roller Bearing Fault Diagnosis Method Based on LCD Energy Entropy and ACROA-SVM

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
HungLinh Ao ◽  
Junsheng Cheng ◽  
Kenli Li ◽  
Tung Khac Truong
Keyword(s):  
Support Vector Machine ◽  
Fault Diagnosis ◽  
Roller Bearing ◽  
Local Characteristic ◽  
Support Vector ◽  
Svm Classifier ◽  
Outer Race ◽  
Bearing Fault ◽  
Bearing Fault Diagnosis ◽  
Energy Entropy

This study investigates a novel method for roller bearing fault diagnosis based on local characteristic-scale decomposition (LCD) energy entropy, together with a support vector machine designed using an Artificial Chemical Reaction Optimisation Algorithm, referred to as an ACROA-SVM. First, the original acceleration vibration signals are decomposed into intrinsic scale components (ISCs). Second, the concept of LCD energy entropy is introduced. Third, the energy features extracted from a number of ISCs that contain the most dominant fault information serve as input vectors for the support vector machine classifier. Finally, the ACROA-SVM classifier is proposed to recognize the faulty roller bearing pattern. The analysis of roller bearing signals with inner-race and outer-race faults shows that the diagnostic approach based on the ACROA-SVM and using LCD to extract the energy levels of the various frequency bands as features can identify roller bearing fault patterns accurately and effectively. The proposed method is superior to approaches based on Empirical Mode Decomposition method and requires less time.

scholarly journals Incremental Entropy Relation as an Alternative to MaxEnt

Entropy ◽  
2008 ◽  
Vol 10 (2) ◽  
pp. 124-130 ◽  
Author(s):  
Angelo Plastino ◽  
Angel Plastino ◽  
Evaldo Curado ◽  
Montse Casas
Keyword(s):  
Entropy Relation
Sign in / Sign up

Export Citation Format

Share Document