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1.
Tong Ming Yan Kaibo Jin Lei Yue Xing Li Mingyang 《Neural computing & applications》2021,33(15):9375-9389
Neural Computing and Applications - Video-based human action recognition remains a challenging task. There are three main limitations: (1) Most works are only restricted to single temporal scale... 相似文献
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Qiu Jun Wang Yueting Wu Peng Jiang Shan Cui Kaibo Chen Guowei Liu Dongliang Cui Guangwen 《Journal of Porous Materials》2021,28(6):1675-1687
Journal of Porous Materials - The dynamics and thermodynamics of adsorption of hexadecyl ammonium with different numbers of carbon chains in montmorillonite (Mt) with different layer charge density... 相似文献
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Ying Tao Yan Huaicheng Li Zhichen Shi Kaibo Feng Xiangsai 《International Journal of Control, Automation and Systems》2021,19(11):3708-3719
International Journal of Control, Automation and Systems - Loop closure detection is an indispensable part of visual simultaneous location and mapping (SLAM). Correct detection of loop closure can... 相似文献
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Two-dimensional (2-D) data maps are generated in certain advanced manufacturing processes. Such maps contain rich information about process variation and product quality status. As a proven effective quality control technique, statistical process control (SPC) has been widely used in different processes for shift detection and assignable cause identification. However, charting algorithms for 2-D data maps are still vacant. This paper proposes a variable selection-based SPC method for monitoring 2-D wafer surface. The fused LASSO algorithm is firstly employed to identify potentially shifted sites on the surface; a charting statistic is then developed to detect statistically significant shifts. As the variable selection algorithm can nicely preserve shift patterns in spatial clusters, the newly proposed chart is proved to be both effective in detecting shifts and capable of providing diagnostic information for process improvement. Extensive Monte Carlo simulations and a real example have been used to demonstrate the effectiveness and usage of the proposed method. 相似文献
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正东干渠是湖北省四湖流域六大骨干排水沟渠之一,是四湖上区田北片和中区潜江市境内的排水干渠,起于荆门市沙洋县境内的李市,由李市流经漳湖垸农场、江汉油田总部(广华寺)、高场、熊口、徐李闸等地,于潜江市西大垸农场附近的冉家集汇入四湖总干渠,全长60.26 km,流域面积335.4 km2。东干渠在高场被田关河分为上下两段,上段李市~高场(以下简称东干渠上段)长约25 km,流域面积213.6 相似文献
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Controlling an engineering process usually focuses on maintaining the process output on-target with minimum variation. Conventionally, the quality loss incurred by the deviation from the nominal values is assumed symmetric. However, in some engineering processes, the penalties incurred by positive and negative deviations of the quality variables are different. In such cases, we need to redesign the controller so that the overall quality loss is minimized. In this work, motivated by a real ingot growing process, a new controller is proposed for an asymmetric quality loss function. Its performance and stability are studied via numerical simulation. The effectiveness of the method is also demonstrated in the real engineering process. 相似文献
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Imbalanced fault diagnosis of rotating machinery using autoencoder-based SuperGraph feature learning
Existing fault diagnosis methods usually assume that there are balanced training data for every machine health state. However, the collection of fault signals is very difficult and expensive, resulting in the problem of imbalanced training dataset. It will degrade the performance of fault diagnosis methods significantly. To address this problem, an imbalanced fault diagnosis of rotating machinery using autoencoder-based SuperGraph feature learning is proposed in this paper. Unsupervised autoencoder is firstly used to compress every monitoring signal into a low-dimensional vector as the node attribute in the SuperGraph. And the edge connections in the graph depend on the relationship between signals. On the basis, graph convolution is performed on the constructed SuperGraph to achieve imbalanced training dataset fault diagnosis for rotating machinery. Comprehensive experiments are conducted on a benchmarking publicized dataset and a practical experimental platform, and the results show that the proposed method can effectively achieve rotating machinery fault diagnosis towards imbalanced training dataset through graph feature learning. 相似文献
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