检索范围:
排序: 展示方式:
Review of pantograph and catenary interaction
Weihua ZHANG, Dong ZOU, Mengying TAN, Ning ZHOU, Ruiping LI, Guiming MEI
《机械工程前沿(英文)》 2018年 第13卷 第2期 页码 311-322 doi: 10.1007/s11465-018-0494-x
The application of electrified railway directly promotes relevant studies on pantograph-catenary interaction. With the increase of train running speed, the operating conditions for pantograph and catenary have become increasingly complex. This paper reviews the related achievements contributed by groups and institutions around the world. This article specifically focuses on three aspects: The dynamic characteristics of the pantograph and catenary components, the systems’ dynamic properties, and the environmental influences on the pantograph-catenary interaction. In accordance with the existing studies, future research may prioritize the task of identifying the mechanism of contact force variation. This kind of study can be carried out by simplifying the pantograph-catenary interaction into a moving load problem and utilizing the theory of matching mechanical impedance. In addition, developing a computational platform that accommodates environmental interferences and multi-field coupling effects is necessary in order to further explore applications based on fundamental studies.
关键词: electrified railway pantograph and catenary interaction contact force variation moving load problem mechanical impedance multi-field
Zhigang GUO, Zhi SUN
《结构与土木工程前沿(英文)》 2011年 第5卷 第4期 页码 458-464 doi: 10.1007/s11709-011-0133-7
关键词: PZT piezoelectric impedance optimization spectral element damage identification
《环境科学与工程前沿(英文)》 2022年 第16卷 第4期 doi: 10.1007/s11783-021-1480-9
• RED performance and stack resistance were studied by EIS and LSV.
关键词: Reverse electrodialysis Electrochemical impedance spectroscopy Concentration polarization Spacer shadow effect
陈积懋
《中国工程科学》 2000年 第2卷 第4期 页码 64-69
论述了检测复合材料和胶接结构不连续(缺陷)的新型多模综合无损检测技术。该技术以声与超声检测技术为基础,包含五种不同检测模式,用以检测复合材料与胶接结构的失粘、脱粘、分层、疏松、夹芯压皱及其他缺陷。它适用于复合材料与构件的制造、维修和使用现场。它的适用对象范围广泛,几乎覆盖了现有常用的复合材料和胶接结构。它的检测可靠性高,重复精度好。文章还讨论了组成多膜声学综合胶接检测仪的五种不同检测模式的原理,并从我们和国内外同行的大量实践经验出发,说明了综合无损检测技术的巨大发展前景。
LIU Hongyi, WANG Fei, WANG Lei
《机械工程前沿(英文)》 2007年 第2卷 第2期 页码 168-174 doi: 10.1007/s11465-007-0028-4
S. SAMANTA, S. S. NANTHAKUMAR, R. K. ANNABATTULA, X. ZHUANG
《结构与土木工程前沿(英文)》 2019年 第13卷 第3期 页码 542-556 doi: 10.1007/s11709-018-0496-0
关键词: piezoelectricity impedance curve mode shapes inverse problem flaw detection curve shifting
基于阻抗控制的人机协作范式研究及其机器人装配应用 Article
赵兴炜, 陈沂洺, 钱璐, 陶波, 丁汉
《工程(英文)》 2023年 第30卷 第11期 页码 83-92 doi: 10.1016/j.eng.2022.08.022
人-机器人协作由于人和机器人的优势互补而成为一个新兴的研究领域。本文提出了一种基于阻抗控制人机协作理论框架。在人机理论协框架下,人是决策者,机器人是执行者,装配任务提供环境约束。机器人是执行装配动作的主要执行者,具有位置控制、拖动控制、正阻抗控制和负阻抗控制等方式。为了揭示人机协作框架的特点,本文讨论了不同控制模式的切换条件图和人机协同耦合系统的稳定性分析。最后进行了人机协作装配实验,在装配公差为0.08 mm或配合过盈配合时,均可完成装配任务。实验表明,人机协同装配具有人与机器人的互补优势,能够有效地完成复杂的装配任务。
Valveless pumping using a two-stage impedance pump
V. C.-C. LEE, Y. A. ABAKR, K.-C. WOO
《机械工程前沿(英文)》 2013年 第8卷 第3期 页码 311-318 doi: 10.1007/s11465-013-0270-x
Impedance pump is defined as a type of valveless pumping mechanism, where an elastic tube is joined with a tube of different impedance, a periodic asymmetrical compression on part of the elastic tube will produce a unidirectional flow. Numerical and experimental studies had been conducted in the past, but little experimental work was found to exploit the principle of multi-stage impedance pumping for fluid transportation. This paper concentrates on the fluid behavior for an open-loop two-stage system experimentally. The aim of this work is to have an insight on the deliverable head and pumping rate of an open-loop two-stage impedance pumping system. This paper generally investigates the effect of different parameters towards the generation of unidirectional flows and composite flow of two opposite directions. Results obtained are of significant values.
关键词: valveless pumping open-loop two-stage unidirectional composite
电力系统中对称和/或不对称故障的限流器阻抗优化新方法 None
Mahmoud MODARESI, Hamid LESANI
《信息与电子工程前沿(英文)》 2018年 第19卷 第2期 页码 297-307 doi: 10.1631/FITEE.1601689
《机械工程前沿(英文)》 2023年 第18卷 第2期 doi: 10.1007/s11465-023-0747-1
关键词: micro-electro-mechanical system capacitive sensor bionics operation instability mechanical and electrical decoupling biomedical force measurement
An investigation on stress distribution effect on multi- piezoelectric energy harvesters
Hailu YANG, Dongwei CAO
《结构与土木工程前沿(英文)》 2017年 第11卷 第3期 页码 301-307 doi: 10.1007/s11709-017-0404-z
关键词: piezoelectric transducer uneven stress impedance matching optimal energy output
Determination of mechanical parameters for elements in meso-mechanical models of concrete
Xianglin GU, Junyu JIA, Zhuolin WANG, Li HONG, Feng LIN
《结构与土木工程前沿(英文)》 2013年 第7卷 第4期 页码 391-401 doi: 10.1007/s11709-013-0225-7
关键词: concrete meso-mechanical model discrete element method size effect mechanical parameter
《化学科学与工程前沿(英文)》 2023年 第17卷 第9期 页码 1254-1266 doi: 10.1007/s11705-023-2297-3
关键词: epoxy resin polyaniline nanorods mechanical property tribological performance wear mechanism
Advances in tissue state recognition in spinal surgery: a review
Hao Qu, Yu Zhao
《医学前沿(英文)》 2021年 第15卷 第4期 页码 575-584 doi: 10.1007/s11684-020-0816-3
关键词: spinal surgery tissue state recognition image force sensing bioelectrical impedance
Thermo-mechanical simulation of frost heave in saturated soils
《结构与土木工程前沿(英文)》 页码 1400-1412 doi: 10.1007/s11709-023-0990-x
关键词: frost heave multiphysics analysis thermo-mechanical approach saturated soils
标题 作者 时间 类型 操作
Review of pantograph and catenary interaction
Weihua ZHANG, Dong ZOU, Mengying TAN, Ning ZHOU, Ruiping LI, Guiming MEI
期刊论文
Spectral element modeling based structure piezoelectric impedance computation and damage identification
Zhigang GUO, Zhi SUN
期刊论文
stack configuration on interface resistances in reverse electrodialysis by in situ electrochemical impedance
期刊论文
Fuzzy force control of constrained robot manipulators based on impedance model in an unknown environment
LIU Hongyi, WANG Fei, WANG Lei
期刊论文
Detection of void and metallic inclusion in 2D piezoelectric cantilever beam using impedance measurements
S. SAMANTA, S. S. NANTHAKUMAR, R. K. ANNABATTULA, X. ZHUANG
期刊论文
A bionic approach for the mechanical and electrical decoupling of an MEMS capacitive sensor in ultralow
期刊论文
An investigation on stress distribution effect on multi- piezoelectric energy harvesters
Hailu YANG, Dongwei CAO
期刊论文
Determination of mechanical parameters for elements in meso-mechanical models of concrete
Xianglin GU, Junyu JIA, Zhuolin WANG, Li HONG, Feng LIN
期刊论文
Facile synthesis of polyaniline nanorods to simultaneously enhance the mechanical properties and wear
期刊论文