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基于改进EMD的齿轮箱故障特征提取方法研究
Published 2014-01-01“…According to Empirical mode decomposition(EMD)generally appearing to end effects in signal processing,combining features of non-stationary vibration signal from gearbox early faults,an improved EMD method is proposed.The method is based on the combination of piecewise Hermit interpolation of order three with extreme truncation and correlation coefficient screening method.Firstly,the piecewise Hermit interpolation of order three is used to calculate envelopes.Secondly,the signal and envelopes are truncated at the extreme the shortest distance to endpoints,and the middle of them is left for further processing.Lastly,after decomposition all of intrinsic mode functions(IMFs)are used to calculate correlation coefficients with the original signal,so as to find out main IMFs to be made further analysis.The results show that the improved EMD method can extract faults feature in gearbox effectively.…”
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Deep Learning for Anomaly Detection in CNC Machine Vibration Data: A RoughLSTM-Based Approach
Published 2025-03-01“…RoughLSTM classifies input data into lower, upper, and boundary regions using an adaptive threshold derived from RST, improving uncertainty handling. The proposed method is evaluated on real-world vibration data from CNC milling machines, achieving a classification accuracy of 94.3%, a false positive rate of 3.7%, and a false negative rate of 2.0%, outperforming conventional LSTM models. …”
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1183
Research on Oil and Gas-Bearing Zone Prediction and Identification Based on the SVD–K-Means Algorithm—A Case Study of the WZ6-1 Oil-Bearing Structure in the Beibu Gulf Basin, South...
Published 2024-11-01“…This has been confirmed by the high-yield industrial oil flow obtained from the newly drilled WZ6-1-A3 well. The SVD–K-means algorithm for predicting oil and gas-bearing zones provides a new approach for predicting hydrocarbon-rich areas in complex fault block structures with limited drilling and poor-quality seismic data.…”
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Discursive Strategies of Indirect Apology in English-Language Personal Communication
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1186
Innovative Approaches for PCB Image Reconstruction: Tailored Datasets, Metrics, and Models
Published 2025-01-01“…The reconstruction of PCB (Printed Circuit Board) images is vital for quality control in electronic manufacturing, enabling fault analysis, reverse engineering, and repair. …”
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Design of Bluetooth Communication-Based Wireless Battery Management System for Electric Vehicles
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1189
Implications of helium accumulation models in helium-rich basins in China for the enrichment and exploration of helium in coal measures
Published 2025-06-01“…However, relevant research remains in its infancy. MethodsBased on a summary and analysis of helium generation, migration, and accumulation theories in natural gas reservoirs, this study systematically investigated the enrichment patterns of helium in coal measures and proposed exploration targets. …”
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Application of Concentration-Area fractal modeling and artificial neural network to identify Cu, Zn±Pb geochemical anomalies in Hashtjin area, NW of Iran
Published 2024-10-01“…According to the results, all three methods used in this study represent a high favorability of ore mineralization in the northeast of the study area; Therefore, further investigations and investigation are recommended in the introduced area during later stages. …”
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A novel small-scale wind-turbine blade failure detection according to monitored-data
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1194
Landslide Susceptibility Mapping in Darjeeling Himalayas, India
Published 2018-01-01Get full text
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Influence of System Parameters on Nonlinear Dynamic Characteristics of the Herringbone Gear Transmission Under Different Coincidence Degrees
Published 2024-01-01“…The appropriate coincidence degree of reasonable selection can improve transmission bearing capacity and ensure transmission stability, thereby improving the performance and reliability of the gear transmission system. The analysis of the influence of system parameters on system vibration characteristics under different coincidence degrees is of great significance for optimizing the transmission system performance, improving work efficiency and reducing fault risk. …”
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Multifactor Algorithm for Test Case Selection and Ordering
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SEISMIC RESPONSE IN MUARA BANGKAHULU SUB-DISTRICT, BENGKULU CITY, USING THE CONCEPT OF WAVE PROPAGATION
Published 2024-09-01Get full text
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