ORIGINAL PAPER
Load identification method of ball mill based on the CEEMDAN-wavelet threshold-PMMFE
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1
Jiangxi Mining and Metallurgical Engineering Research Center, China
 
2
School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi Province, China
 
 
Submission date: 2023-11-11
 
 
Final revision date: 2023-12-26
 
 
Acceptance date: 2024-04-25
 
 
Publication date: 2024-06-24
 
 
Corresponding author
Lirong Yang   

Jiangxi Mining and Metallurgical Engineering Research Center, China
 
 
Gospodarka Surowcami Mineralnymi – Mineral Resources Management 2024;40(2):163-180
 
KEYWORDS
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ABSTRACT
In order to address the difficult problem of ball mill load identification during milling operation, the multi-scale fuzzy entropy algorithm is introduced into ball mill load identification and an innovative ball mill load identification method is proposed- the complete integrated empirical decomposition based on adaptive noise (CEEMDAN)-joint denoising with wavelet thresholding-multi-scale fuzzy entropy biased mean value (PMMFE) ball mill load identification method. Firstly, the vibration signals of ball mill bearings are denoised by the CEEMDAN-wavelet threshold joint denoising method and the analysis reveals that this method has obvious advantages over other denoising methods; secondly, the fuzzy entropy, multi-scale fuzzy entropy, and multi-scale fuzzy entropy deviation of denoised vibration signals are computed, the relationship between each entropy feature and the mill load is analysed in-depth and in an information-rich manner. Finally, the least squares support vector algorithm is used to identify the load of the feature vector. The analysis of the measured vibration signals reveals that the overall recognition rate of this method is 84.4%, which is significantly higher than that of other denoising methods and the combination of feature parameters, and the experiments show that the mill load recognition method based on CEEMDAN-wavelet thresholding-PMMFE is able to effectively identify the different loading states of ball mills.
ACKNOWLEDGEMENTS
This work was supported by the General Project of Ganzhou Key R&D Programme (grant number 20210112411).
METADATA IN OTHER LANGUAGES:
Polish
Metoda identyfikacji obciążenia młyna kulowego w oparciu o CEEMDAN – próg falkowy – PMMFE
obciążenie młyna, sygnał drgań łożyska, próg CEEMDAN-fala, PMMFE, identyfikacja obciążenia
W celu rozwiązania trudnego problemu identyfikacji obciążenia młyna kulowego podczas operacji mielenia, do identyfikacji obciążenia młyna kulowego wprowadzono wieloskalowy algorytm entropii rozmytej oraz zaproponowano innowacyjną metodę identyfikacji obciążenia młyna kulowego – pełną zintegrowaną dekompozycję empiryczną opartą na szumie adaptacyjnym (CEEMDAN) – wspólne odszumianie z progowaniem falkowym – wieloskalowa metoda identyfikacji obciążenia młyna kulowego metodą rozmytej entropii z odchyleniem wartości średniej (PMMFE). Po pierwsze, sygnały wibracyjne łożysk młyna kulowego są odszumiane za pomocą wspólnej metody odszumiania CEEMDAN z progowaniem falkowym, a analiza pokazuje, że metoda ta ma oczywiste zalety w porównaniu z innymi metodami odszumiania; po drugie, obliczana jest rozmyta entropia, wieloskalowa rozmyta entropia i wieloskalowe rozmyte odchylenie entropii odszumionych sygnałów wibracyjnych, a związek między każdą cechą entropii a obciążeniem młyna jest analizowany dogłębnie i w sposób bogaty w informacje. Na koniec, algorytm wektora wsparcia najmniejszych kwadratów jest wykorzystywany do identyfikacji obciążenia wektora cech. Analiza zmierzonych sygnałów wibracyjnych pokazuje, że ogólny wskaźnik rozpoznawania tej metody wynosi 84,4%, co jest znacznie wyższe niż w przypadku innych metod odszumiania i kombinacji parametrów cech, a eksperymenty pokazują, że metoda rozpoznawania obciążenia młyna oparta na progowaniu falkowym CEEMDAN-PMMFE jest w stanie skutecznie identyfikować różne stany obciążenia młynów kulowych.
 
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