Abstract
Cutting head is a part of the roadheader prone to failure. Its health monitoring and fault diagnosis can ensure the safe and efficient operation of the roadheader. The cutting head has been under the complex working condition of variable load for a long time. Therefore, the vibration signal of the cutting head has non-linear time-varying modulation characteristics, which causes serious interference to the fault identification of the cutting head. Hence, this study proposes a feature extraction method based on rime algorithm (RIME) optimized variational mode decomposition (VMD) and refined composite multi-scale fluctuation dispersion entropy (RCMFDE). Meanwhile, it employs the advantages of Deep Belief Networks (DBN) in nonlinear high-dimensional data processing to classify and recognize the failure modes of the cutting head. Firstly, the paper obtains the optimal parameter combinations of the VMD algorithm through the RIME algorithm. It uses the optimized VMD to adaptively decompose the cutting vibration signal and get a series of intrinsic modal functions (IMF). The paper combined the correlation coefficients to screen the optimal eigencomponent. Then, for the feature IMF component, this study explores the impact of the embedding dimension and category number of RCMFDE on the feature extraction performance. It calculates the RCMFDE of vibration signals from different cutting heads and uses them as the eigenvector. Finally, the paper uses the DBN model to train and test the cutting vibration features and realize the fault pattern recognition of the cutting head. The simulation and experimental results show that the proposed method can effectively extract the fault characteristics of cutting vibration signals, and the recognition accuracy reaches 99.164%. Compared with other methods, it has better recognition accuracy and robustness and can provide a new research idea for monitoring the health status of the cutting head.













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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
The present work is supported by the Natural Science Research Project of Anhui Educational Committee (2023AH051196), Open Fund of China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines (No.SKLMRDPC22KF26), Open Fund of Anhui Intelligent Mining Technology and Equipment Engineering Research Center (No.AIMTEEL202202), Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology (2022yjrc63), The University Synergy Innovation Program of Anhui Province (No.GXXT-2022-019).
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CL is responsible for the entire experiment execution and paper writing. TM is responsible for the review and correction of papers. RS and QY are responsible for guiding the experiment. TY is responsible for checking and reviewing manuscripts. This study is funded by CL and TM.
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Li, C., Ma, T., Shi, R. et al. A fault identification method for cutting head of the roadheader based on parameter optimization VMD and RCMFDE. SIViP 19, 319 (2025). https://doi.org/10.1007/s11760-025-03884-4
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DOI: https://doi.org/10.1007/s11760-025-03884-4