Results 81 to 90 of about 939 (137)
Gaoya dianqi, 2018 气体绝缘金属封闭开关设备（GIS）在运行中因电磁力导致的异常机械振动时有发生。为研究三相共体水平GIS母线外壳的受力与振动特性,使用有限元分析软件,建立三相工频电流源激励下的水平GIS母线模型,进行稳态电磁场分析,得到外壳所受电磁力,再建立金属外壳的结构动力学模型,求解电磁力激励下的外壳振动加速度响应。结果表明,金属外壳受到周期性变化的电磁力作用,频率为激励源频率的两倍。在该电磁力的作用下,外壳产生机械振动,外壳两侧中线节点的振动加速度显著大于其他位置,其变化频率与电动力频率一致 ...
齐卫东 +7 more
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[Design and analysis of human arm pathological tremor simulation system]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiHe Z, Liu H, Liu Q, Jiang Y, Zhu Z.
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[Evaluation of the function and activity of masticatory muscles using a self-developed wireless surface electromyography system]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLi W +7 more
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[Determination of tetracyclines in animal muscle tissues by ultra performance liquid chromatography- tandem mass spectrometry]. [PDF]
Se PuChu K +5 more
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[Development and electrophysiological validation of a temporal interference transcranial magnetic stimulation system for mice]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiCui C, Wang T, Zhang Y, Zheng W, Xu G.
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[Advances in inhalable nano-formulations]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanLuo Y, Yue X, Zhao Z, Zhang X.
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[Analysis of auditory-vestibular function and inner ear imaging features at different stages of Meniere's disease]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiXin X, Ma X, Sun B, Liu J, Wang G, Wu P.
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Gaoya dianqi油浸式铁心电抗器正常运行期间其振动由绕组受力、铁心磁致伸缩效应以及铁心饼间的麦克斯韦力导致。通过构建电抗器磁—固耦合三维模型，对电抗器在3种载荷作用下的轴向及径向振动响应分布进行分析。在此基础上搭建电抗器振动试验平台获取了电抗器箱体振动信号，通过调整铁心轴向压紧力，对箱体振动信号进行采集，通过提取各机械状态下的振动频谱特征可知，随着电抗器铁心轴向压紧力降低，箱体振动信号频谱发生变化，采用3种贝叶斯优化的网络分类器模型，对不同压紧力下的机械状态进行识别，准确率分别达到了94.5%、94.2%与95.0 ...
孟令明 +6 more
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