Results 121 to 130 of about 5,293 (164)

基于实测和Matlab仿真波形比较的10 kV配电网单相接地故障暂稳态特征信息融合选线方法研究

Dianci bileiqi
10 kV配电网单相接地故障稳态选线方法受故障电阻、谐振接地电网补偿的影响较大，且信噪比较低；而暂态选线方法虽然信噪比较高，且受故障电阻、谐振接地电网补偿的影响较小，但具有依赖特征频带选取以及信号持续时间短，信号与暂态干扰信号产生混叠严重的特点。为了进一步提高选线成功率，本研究探索了一种融合暂稳态特征信息的选线方法，通过在Matlab仿真平台中搭建10 kV配电网系统的高精度pi模型网络，分析故障信号的暂稳态特征，在三相不平衡、支路开合闸等干扰条件下 ...
刘成英, 祁升龙, 芦翔, 王宏宇, 刘海涛, 李瑞祥, 杨兰均   +6 more
doaj  

[Motor imagery classification based on dynamic multi-scale convolution and multi-head temporal attention]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Xiao N, Li M.
europepmc   +1 more source

[Discrimination of macrotrabecular-massive hepatocellular carcinoma based on fusion of multi-phase contrast-enhanced computed tomography radiomics features]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhang Z, Xie J, Zhong W, Liang F, Zhang W, Sun Y, Zhen X, Yang R.   +7 more
europepmc   +1 more source

12kV开关柜局部放电超声波信号特征研究

Gaoya dianqi
为识别区分12kV开关柜常见局部放电故障类型，依据开关柜实际运行故障设计了尖端、悬浮、沿面与气隙四种局部放电缺陷模型，搭建了真型开关柜局放实验平台。模拟开关柜局部放电过程并采集超声波（Acoustic Emission，AE）信号，利用快速傅立叶变换分析了AE信号频域参数、相位分布、上升沿时间、下降沿时间、波形形状特征，对各类特征量进行了对比研究。结果表明：四种缺陷产生的AE信号副频段及放电相位特征差异明显，不同缺陷产生的AE信号形状各异，下降沿与上升沿时间比值的明显差异可作为局放类型判别依据 ...
杨龙山, 曾潮旭, 杨森, 丁晨, 蔡乐辉, 陈天翔   +5 more
doaj  

[Research on type 2 diabetes prediction algorithm based on photoplethysmography]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Hu M, Wu Q, Cao Y, Cao J, Zhao Y, Zhang L, Liu X.   +6 more
europepmc   +1 more source

[Brain computer interface nursing bed control system based on deep learning and dual visual feedback]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang P, Ji X, Wang J, Yu X.
europepmc   +1 more source

[Research progress on quantitative magnetic susceptibility imaging reconstruction method based on improved U-network model]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Yang W, Zhang R, Keung S.
europepmc   +1 more source

[A method for emotion transition recognition using cross-modal feature fusion and global perception]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Jie L, Zou Y, Li Z, Lyu B, Zheng W, Li M.   +5 more
europepmc   +1 more source

[Automatic detection and visualization of myocardial infarction in electrocardiograms based on an interpretable deep learning model]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhang Y, Zhang Y, Xie B, Lai D.
europepmc   +1 more source

[A multi-feature fusion-based model for fetal orientation classification from intrapartum ultrasound videos]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zheng Z, Yang X, Wu S, Zhang S, Lyu G, Liu P, Wang J, He S.   +7 more
europepmc   +1 more source