Results 51 to 60 of about 652 (104)

基于Kalman滤波算法的电力变压器顶层油温预测研究

Gaoya dianqi, 2014
油浸式电力变压器油温是影响变压器运行寿命和负载能力的重要因素,与变压器顶层油温密切相关。运行在高温、过负荷情况下的变压器容易因为绕组热点温度过高导致早期故障,而顶层油温是变压器热点温度的重要指标。为能精确预测变压器顶层油温,通过分析基于变压器热路模型的顶层油温动态微分方程,构造基于Kalman滤波的顶层油温状态方程和测量方程,建立了顶层油温实时最优估计模型,实时地预测变压器顶层油温。结合现场实测数据对比分析Kalman滤波模型及IEEE导则推荐模型预测结果 ...
王永强, 岳国良, 何杰, 刘宏亮, 毕建刚, 陈素芬   +5 more
doaj  

复合绝缘子用芯棒压缩弹性模量测试方法和试验研究

Dianci bileiqi
本研究选用直径24 mm的芯棒加工20 个符合压缩弹性模量测试用的芯棒样品，参照标准GB/T 1448-2005，重点讨论涉及芯棒压缩弹性模量的测试方法和装置。试验结果表明试验机与千分表联合测试方法下，在弹性变形范围内分五级压缩负荷加载，测得的压缩弹性模量值存在一定的分散性，且波动较大，说明这种方法有一定的局限性和缺陷性，多次测量得出的压缩弹性模量值准确度不高；试验机与光栅尺及配套工装联合测试方法下，测得压缩弹性模量值准确度高，分散性小，说明这种试验方法具有很高的稳定性和再现性；测试压缩弹性模量时 ...
刘于新, 杜雨欣, 刘瑜灿, 陈港, 张长征, 刘志强, 何远华, 钟广林   +7 more
doaj  

[Exploration and application of nanotechnology in precision transarterial chemoembolization for hepatocellular carcinoma]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Kong JQ, Li R, Zuo RN, Zhang X, Ding ZH, Dai Y.   +5 more
europepmc   +1 more source

[Advances in injectable and transdermal glucose-responsive insulin delivery systems]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Li K, Zhang X, Gu Z, Wang J.
europepmc   +1 more source

[Application of soft tissue balance combined with medial displacement calcaneal osteotomy for progressive collapsing foot deformity]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Ye G, Mai H, Zhang L, Su B, Zeng G, Huang H.   +5 more
europepmc   +1 more source

[Development of a balloon sensor device for force-electrical coupling measurement of esophagus]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Ran P, Zhong Y, Lai Y, Liu L, Zhu Y, Zhu H.   +5 more
europepmc   +1 more source

[Application progress of customized steel plates in osteotomy and orthopedic treatment of knee osteoarthritis]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Jia J, Ma J, Ma X.
europepmc   +1 more source

[Impact of ultrasonic scaling on abutment screw torque in implant restorations]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Tang Y, Zhao X, Yang X, Jia H, Liu Y.
europepmc   +1 more source

[Finite element analysis of tibial and femoral resection configurations on varus alignment in total knee arthroplasty]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Liang C, Yin Y, Zhang Y, Zhang X, Chen G, Duan K, Li Z, Lu X, Jin Z.   +8 more
europepmc   +1 more source

[Progresses on temporal interference electromagnetic stimulation for non-invasive deep brain function modulation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhou T, Yu P, Xu Y.
europepmc   +1 more source