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基于支持向量机的校直机工件弯曲量测量误差补偿

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机床与液压 2018年第14期46卷 111-114页

作者：石钧仁郝建军刘子涛重庆理工大学重庆400054 重庆电子工程职业学院重庆401331 重庆智恒精机科技有限公司重庆400054

针对自动校直机在工件弯曲量测量过程中的测量误差问题,提出一种基于支持向量机(SVM)的校直机工件弯曲量测量误差补偿方法。在试验过程中,利用偏摆检测仪将校直机测得的工件弯曲量进行标定,进而获取建模数据。模型训练过程运用交叉验证... 详细信息

针对自动校直机在工件弯曲量测量过程中的测量误差问题,提出一种基于支持向量机(SVM)的校直机工件弯曲量测量误差补偿方法。在试验过程中,利用偏摆检测仪将校直机测得的工件弯曲量进行标定,进而获取建模数据。模型训练过程运用交叉验证法对SVM的惩罚参数、核函数参数进行优化选择,构建SVM优化模型。利用SVM优化模型对不同工件同一测量位置的弯曲量测量误差进行预测补偿,通过对比预测补偿效果,SVM模型的补偿效果明显,具有工程应用价值。

关键词：支持向量机校直机误差补偿弯曲量

Electron density measurement by the three boundary channels of HCOOH laser interferometer on the HL-3 tokamak

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Plasma Science and Technology 2024年第3期26卷 88-93页

作者：牟俊任李永高李远王再宏丁宝钢王浩西易江石中兵 Southwestern Institute of Physics Chengdu 610041People's Republic of China East China Normal University Shanghai 200241People's Republic of China

Far-infrared(FIR)interferometer is widely used to measure the electron density in the magnetically confined fusion plasma devices.A new FIR laser interferometer with a total of 13 channels(8 horizontal channels and 5 oblique channels)is under development on the HL-3tokamak by using the formic-acid laser(HCOOH,f=694 GHz).In order to investigate the boundary electron density activity during the divertor discharge,three horizontal interferometry channels located at Z=-97,-76,76.5 cm have been successfully developed on HL-3 in 2023,and put into operation in recent experimental campaign,with a time resolution of<1.0μs and lineintegrated electron density resolution of~7.0×10^(16) m^(-2).This paper mainly focuses on the optical design of the three-channel interferometry system,as well as optical elements and recent experimental result on HL-3.

关键词： electron density interferometer HL-3

A Droplet State in an Interacting Two-Dimensional Electron System

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A Droplet State in an Interacting Two-Dimensional Electron S...

CCAST“量子输运和介观物理”研讨会

作者： junren shi, Song He, and X. C. Xie Department of Physics, Oklahoma State University, Stillwater, OK 74078 Hexaa Laboratory, Warren, NJ 07059

＜正＞It is well known that the dielectric constant of two-dimensional （2D） electron system goes negative at low electron densities. A consequence of the negative dielectric constant could be the formation of the droplet state. The droplet state is a two-phase coexistence region of high density liquid and low density "gas". In this paper, we carry out energetic calculations to study the stability of the droplet ground state. The possible relevance of the droplet state to recently observed 2D metal-insulator transition is also discussed.

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Meta-Percolation and Metal-Insulator Transition in Two Dimensions

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Meta-Percolation and Metal-Insulator Transition in Two Dimen...

CCAST“强关联物理”研讨会

作者： junren shi, Song He, and X. C. Xie Department of Physics, Oklahoma State University, Stillwater, OK 74078 Hexaa Laboratory, Warren, NJ 07059

＜正＞According to the scaling theory of localization,all quantum electronic states arelocalized in two-dimensional（2D）*** consequence of the theory is thatthere is no quantum percolation transition in ***,in a real system at afinite temperture,electron phase coherent length is finite and the system is betweenquantum and *** find,in such a 2D system,a metal-iusulator transition（MIT）caused by a novel type of percolation,*** relevance torecently observed 2D MIT is also *** numbers:71.30.+h,***

关键词：

Meta-Percolation and Metal-Insulator Transition in Two Dimensions

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Meta-Percolation and Metal-Insulator Transition in Two Dimen...

CCAST“量子输运和介观物理”研讨会

作者： junren shi, Song He, and X. C. Xie Department of Physics, Oklahoma State University, Stillwater, OK 74078 Hexaa Laboratory, Warren, NJ 07059

＜正＞According to the scaling theory of localization,all quantum electronic states arelocalized in two-dimensional （2D） *** consequence of the theory is thatthere is no quantum percolation transition in ***,in a real system at afinite temperature,electron phase coherent length is finite and the system is betweenquantum and *** find,in such a 2D system,a metal-insulator transition（MIT） caused by a novel type of percolation,*** relevance torecently observed 2D MIT is also discussed.

关键词：

A Droplet State in an Interacting Two-Dimensional Electron System

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A Droplet State in an Interacting Two-Dimensional Electron S...

CCAST“强关联物理”研讨会

作者： junren shi, Song He, and X. C. Xie Department of Physics, Oklahoma State University, Stillwater, OK 74078 Hexaa Laboratory, Warren, NJ 07059

＜正＞It is well known that the dielectric constant of two-dimensional （2D） electron sys-tem goes negative at low electron densities.A consequence of the negative dielectricconstant could be the formation of the droplet *** droplet state is a two-phase coexistence region of high density liquid and low density”gas”.In this paper,we carry out energetic calculations to study the stability of the droplet ground *** possible relevance of the droplet state to recently observed 2D metal-insulatortransition is also discussed.

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干扰素治疗EV71手足口病脑炎临床效果观察

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中国社区医师 2015年第25期31卷 52-53页

作者：章旭灿施俊仁浙江省永康市芝英中心卫生院 321306 浙江省永康市第五人民医院 321300

目的:观察干扰素治疗小儿EV71手足口病脑炎的临床效果,探讨临床有效治疗方案。方法:收治EV71手足口病脑炎患儿60例,随机分为治疗组31例和对照组29例。对照组给予对症支持治疗,治疗组在对照组的基础上给予干扰素治疗。比较两组患儿的临... 详细信息

目的:观察干扰素治疗小儿EV71手足口病脑炎的临床效果,探讨临床有效治疗方案。方法:收治EV71手足口病脑炎患儿60例,随机分为治疗组31例和对照组29例。对照组给予对症支持治疗,治疗组在对照组的基础上给予干扰素治疗。比较两组患儿的临床效果。结果:治疗组退热时间、手足疱疹消退时间、口腔溃疡愈合时间和平均住院时间明显短于对照组(P<0.05)。治疗组临床疗效优于对照组(P<0.05)。结论:干扰素治疗小儿EV71手足口病脑炎具有显著的疗效,应考虑作为常规治疗方法。

关键词： EV71手足口病脑炎临床分析

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中短波调幅广播辐射源周围场强测量

核电子学与探测技术 1986年第S1期 82-85页

作者：施浚人浙江医科大学

本文报告某地中短波调幅广播发射天线周围电场强度测量结果及其分布。测量采用各向同性的宽带场强计。本文还介绍了有关理论计算公式。对区域性背景场强测量,建议使用自动频谱分析仪测定。

关键词：环境电磁波电场强度各向同性宽带场强计

高压电缆终端局部放电超声信号传输特性仿真分析

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高压电器 2023年第11期59卷 48-55,64页

作者：何维晟吴照国徐扬杜茂春王谦李勇石钧仁重庆邮电大学重庆400065 国网重庆市电力公司电力科学研究院重庆400022

高压电缆终端的绝缘可靠性直接关系着城市输电网络的稳定运行。常用超声检测法开展高压电缆终端局部放电检测以及绝缘性能评估。在运的高压电缆终端一般有充油式和干式两种类型,目前缺乏对局部放电超声信号在两种类型的终端中传播特性... 详细信息

高压电缆终端的绝缘可靠性直接关系着城市输电网络的稳定运行。常用超声检测法开展高压电缆终端局部放电检测以及绝缘性能评估。在运的高压电缆终端一般有充油式和干式两种类型,目前缺乏对局部放电超声信号在两种类型的终端中传播特性的对比研究。因此文中首先从基本结构和材料特性上阐述了充油和干式电缆终端的区别。随后采用电—力—声类比方法说明电缆终端中局部放电产生超声信号的机理。利用有限元方法建立充油终端和干式终端的仿真模型,在不同位置施加不同频率的超声信号,获取超声信号在不同介质中的传播规律及分布特性,并通过法兰处的压力评估不同位置以及不同频率的超声信号对高压电缆局部放电检测的影响。

关键词：高压电缆终端局部放电超声波检测绝缘油