Results 11 to 20 of about 167 (132)
Slope safety, stability evaluation, and protective measures based on machine learning [PDF]
, 2022 In recent years, the slope instability has brought immeasurable costs to production and life of human. As a result, it is essential to correctly understand, analyze, and design the slope reasonably, and implement appropriate protective measures to ...
Chong-chong QI +2 more
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A rolling bearing life prediction method based on multi-task gated networks [PDF]
ObjectiveTo achieve the remaining life prediction of bearings in ship mechanical equipment, a multi-task gated networks prediction model based on the Bidirectional Gated Recurrent Unit (BiGRU), Variational Autoencoder (VAE), and Multi-gate Mixture-of ...
Changkun HAN +5 more
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Research on middle beam pin shaft node of hydraulic support test bench based on AHP-Fuzzy analysis model [PDF]
, 2023 In order to improve the situation of discontinuity in the range of stresses caused by pin deformation, the mathematical theoretical model of peak contact stresses after pin node deformation in the test rig was established based on the Hertzian contact ...
Biao JIANG +4 more
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Gaoya dianqi, 2011 探讨了目前国内外在GIS状态监测技术、剩余寿命评估方法等方面的研究现状,指出现有技术在GIS剩余寿命评估方面的缺陷,提出了超高压GIS剩余寿命评估方法的总体构想及发展趋势。
李东妍 +5 more
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Applications of Erlang Mixtures in Insurance [PDF]
, 2017 等尺度参数的Erlang混合分布具有很多良好的性质，广泛应用于保险精算数据中。对于混合分布的参数估计，最常用的方法是期望最大化(ExpectationMaximization，简写EM)算法。Erlang混合分布的形状参数限制为正整数，这使得形状参数的估计比较困难。在本文中我们对标准的EM算法进行修改，提出广义期望最大化(GeneralizedExpectation-Maximization，GEM)算法。在EM算法的M步中对形状参数的估计不是使相应的Q函数达到最大 ...
桂文永
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Key technologies of fully autonomous drilling system for coal mine anti-impact drilling robot [PDF]
For the technical problem of low intelligence in the process of drilling and pressure relief in high stress mines, the research status of pressure relief technology and equipment at home and abroad is summarized and analyzed in this study.
Chao TAN +8 more
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Threat detection in transmission scenario based on TATLNet [PDF]
, 2020 The operation of cranes and other large machinery threatens the safety of transmission lines. In order to solve this problem in the transmission scenario, the research from the aspects of data enhancement, network structure and the hyperparameters of the
Bo WANG +5 more
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Research on Application of Hydrogen in Power Industry Under “Double Carbon” Circumstance [PDF]
, 2022 Hydrogen is a secondary clean energy which can be stored, moved and controlled. It is an ideal power energy carrier. The development and utilization of hydrogen as an energy source is an important means to tackle the climate change, ensure the national ...
ZHANG Yanhong, ZHU Kai
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Gaoya dianqi, 2012 笔者针对变压器的试验信息,分析了影响变压器剩余寿命评估的因素,确立了用于变压器剩余寿命评估的信息量。根据已有的研究成果,结合健康指数公式,推导并建立了依据当前信息所反映出的变压器状态的健康指数、剩余寿命计算公式,结合实例,应用所建立的模型对变压器的健康指数、剩余寿命进行分析和计算,经验证评估,结果与设备的实际情况相符。
李喜桂, 常燕, 罗运柏, 宋斌
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Dianci bileiqi, 2023 避雷器在运行过程中会承受多次雷电冲击影响，其过电压防护效果值得关注。选取现场已运行19年的110 kV氧化锌阀片为研究对象，在135℃条件下进行加速交流老化试验，测试了阀片热功耗曲线及其它特征参量，并基于热加速因子的阿伦纽斯模型计算了阀片剩余寿命。进一步，以特制存在不同阀片劣化程度的避雷器为研究对象，开展了多次连续的雷电冲击电流(8/20μs, 10 kA)试验，测试了多次雷电冲击电流前后能表征避雷器电气性能的特征参量以及冲击电流、电压波形。研究发现：已服役19年的阀片剩余寿命分散性明显 ...
姜雄伟, 王文浩, 韩睿
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