In Electric vehicle Drive Unit Gears, high mesh misalignments result in shift in load distribution of a gear pair that can increase contact and bending stresses. It can move the peak bending and contact stresses to th...
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The primary responsibility of load dispatch centers is to maximize economic efficiency while maximizing operational efficiency, which is achieved by minimizing the cost of real power generation at various generating u...
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During the gearbox fault diagnosis, aiming at the problems of diversified forms of faults and loading conditions, the lack of fault labels in the actual sample data, and the insufficient generalisation ability of the ...
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ISBN:
(纸本)9798350352634;9798350352627
During the gearbox fault diagnosis, aiming at the problems of diversified forms of faults and loading conditions, the lack of fault labels in the actual sample data, and the insufficient generalisation ability of the traditional deep learning model, a deep transfer learning method is proposed for the stator currents of gearbox drive motor. We build a gearbox fault experimental bench, set up a cross-speed loading condition, and collect current signals at different speeds as training set for transfer learning. A convolutional neural network is used as a feature extractor to extract similar data features of samples under different speed. We use the Multiple Kernel Maximum Mean Discrepancy (MK-MMD) as a feature distribution loss to measure the difference in feature distribution across the feature under different speed, and finally achieve the joint transfer learning of the fault features from the source domain to the target domain. A deep transfer model is trained to achieve the fault diagnosis task. The analysis of experimental data shows that the method can achieve cross-speed fault diagnosis of gearboxes to a certain extent, with an average diagnosis rate of 74% above.
Musical Schema negotiation describes how a user39;s facial expressions may convey their emotional state or mood. You may see these expressions in the live video from the system camera. Many efforts are being made to...
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In this paper, the bearing fault problem of rotating equipment is studied by using support vector machine (SVM) model classification method. In order to solve the problem of low accuracy of using SVM to detect the fau...
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ISBN:
(纸本)9798350373707;9798350373691
In this paper, the bearing fault problem of rotating equipment is studied by using support vector machine (SVM) model classification method. In order to solve the problem of low accuracy of using SVM to detect the fault for bearing, the method of variational mode decomposition (VMD) is introduced to extract features from original vibration data and the intelligentoptimization algorithm of MSGWO is introduced to optimize parameters of SVM, which can improve fault diagnosis performance of classification system. A variety of comparative experiments are carried out by using FEMTO-ST bearing data set which is open source on the internet. The results show that the proposed algorithm has high prediction accuracy and is superior to the present methods in classification.
An Electrocardiogram (ECG) contributes significantly to early diagnosis and classification of heart diseases, arrhythmia which means irregular heart rate. Regrettably, the process became difficult due to asymmetric an...
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In traditional teaching, students may find it difficult to receive timely and personalized feedback, and some students may lose interest in music learning due to the monotony of traditional learning methods. This arti...
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With the continuous deepening of computer application, computer-assisted instruction (CAI) has made remarkable progress in foreign language learning. Foreign language learning mainly relies on memory-based learning me...
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3D Gaussian Splatting (3DGS) has emerged as a transformative technique for real-time, high-quality 3D rendering. This paper surveys the advancements in 3DGS, focusing on optimization strategies, applications across di...
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