Gaoya dianqi, 2006 对非线性电阻片能量耐受试验用的冲击方波电流源进行了参数设计和仿真计算,得出了回路及负载参数和回路输出波形参数之间的关系。计算和试验结果表明:将人工传输线的各链电感依次由大到小按一定比例进行选择,既可以抑制波头的过冲,又可以减少方波持续期间的平顶降落,得到符合标准规定的冲击方波电流波。
姚学玲, 陈景亮
doaj
Gaoya dianqi, 2018 列车运行过程中的弓网压力载荷以类似正弦形式波动,波动载荷对弓网系统滑动电接触性能有显著影响。文中利用销盘式实验机模拟弓网系统接触圧力的波动状态,实验分析了在不同电流密度、运行速度的工况下,压力波动幅度和波动频率对弓网系统受流和磨损的影响机理。研究表明:压力载荷在波动状态下,压力波动幅度的增大和运行速度的增大都会导致载流效率降低和销试样的磨损率增大;电流密度的增大会导致磨损率增大和载流效率的先增后减;压力波动频率的变化对载流效率和销试样的磨损率影响不明显 ...
陈忠华, 孙国军, 回立川, 时光
doaj
Guangtongxin yanjiu, 2014 为了满足现代无线通信的要求,应用FEM（有限元法）编程计算出倒梯形单脊波导的截止波长和损耗系数,在考虑缝隙间互耦的情况下,采用行波近似计算了倒梯形脊波导缝隙阵的有源导纳,结合HFSS（三维高频结构电磁场仿真）软件提取了缝隙的归一化有源导纳,设计了一种新型的26元X波段倒梯形单脊波导缝隙行波阵。仿真结果表明,副瓣电平<-25dB,具有良好的驻波特性。
黄庆福, 陈小强
doaj
[Brain-controlled unmanned aerial vehicle system based on meta brain computer interface open-source software platform]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLi A +5 more
europepmc +1 more source
Dianci bileiqi盆式绝缘子是GIS断路器中的关键部件，其生产与运输过程中产生的气泡、裂纹、表面脏污等缺陷，将引起GIS发生沿面闪络等故障，降低设备运行可靠性。本文利用超声导波方法对GIS盆式绝缘子进行缺陷检测，首先在Comsol中构建了盆式绝缘子三维仿真模型，设置超声波激励点与接收点分别对完好绝缘子与有缺陷绝缘子进行超声导波仿真研究，有缺陷时接受信号幅值小于完好绝缘子，验证了超声导波方法的有效性。后针对仿真信号分别添加5 dB高斯白噪声，并使用小波降噪，VMD降噪和OMP降噪方法对含噪声信号分别进行处理 ...
李阳 +6 more
doaj +2 more sources
[Efficacy and safety of super electroconvulsive therapy for treatment-resistant depression: a retrospective analysis of 292 cases]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoAn J, Chi Z, Zhao C, Li Y, Wang R, Hu Y.
europepmc +1 more source
[Electroencephalographic assessment of the relationship between frontal alpha asymmetry and emotion dysregulation in children with attention deficit hyperactivity disorder]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiChen L, Zhao LL, Wu XC, Li HY, Zhang WW.
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 ZhiZhang Y, Zhang Y, Xie B, Lai D.
europepmc +1 more source
On a Feature for Some Periodic Function of Two Variables [PDF]
For a real valued periodic function with period p, the function of two variables F((x + y), (x − y)) has the same period p for x and for y. But basic periods for x and for y may be smaller than p.
Takeno, Shigeharu, 竹野, 茂治
core
[Determination of five photoinitiators including 2，4，6-trimethylbenzoyl diphenyl phosphine oxide in gel nail polish by high performance liquid chromatography]. [PDF]
Se PuGong X, Sun J, Li XX, Feng YL.
europepmc +1 more source