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OPTIMIZED ADHESION CONTROL OF ELECTRIC LOCOMOTIVES BASED ON WAVELET ANALYSIS AND CLOUD MODEL

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OPTIMIZED ADHESION CONTROL OF ELECTRIC LOCOMOTIVES BASED ON ...

第一届交通运输工程国际学术会议

作者： HUANG Jingchun1, 2, XIAO Jian1, BAI Yi-feng1, LIAO Shuang-qing1 1School of Electrical Engineering, Southwest jiaotong university, Chengdu Sichuan 610031, China 2School of Mechatronics and Power Engineering, lanzhou jiaotong university, lanzhou Ganshu 730070, China

The driving and braking force of electric locomotives depend on the adhesion force between rail and wheel. The characteristics of adhesion are strongly affected by environment, the conditions between rail and wheel, the design and operation of the locomotive. The adhesion force between rail and wheel has severe nonlinearity and uncertainties. It is very important to realize optimal adhesion control in railway field. In this paper the characteristics of the re-adhesion phenomenon in locomotive traction system were analyzed. The simulation model based on those characteristics was developed. A re-adhesion control method of locomotives based on cloud model and wavelet analysis was proposed. Simulation results show that slips will be suppressed effectively and optimized re-adhesion control can be realized.

关键词： Cloud model Adhesion control Wavelet Analysis locomotive

基于熵值法和广义效用函数法的联络线接轨方案比选

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铁道运输与经济 2009年第11期31卷 91-94页

作者：焦永兰潘玲巧兰州交通大学交通运输学院甘肃兰州730070

针对联络线接轨方案比选的特点构建评价指标体系,从接轨方案的工程条件和行车条件选取评价指标。通过对各方案的指标值进行规范化处理,应用熵值法确定各项指标的权重系数,采用广义效用函数法,计算得出各方案广义效用函数值,比较得到最... 详细信息

针对联络线接轨方案比选的特点构建评价指标体系,从接轨方案的工程条件和行车条件选取评价指标。通过对各方案的指标值进行规范化处理,应用熵值法确定各项指标的权重系数,采用广义效用函数法,计算得出各方案广义效用函数值,比较得到最优方案。以武广客运专线引入长沙枢纽联络线接轨方案为例,基于熵值法和广义效用函数的综合评价方法进行方案比选。

关键词：客运专线联络线评价指标体系

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陆地生态系统碳源与碳汇及其影响机制研究进展

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生态学杂志 2005年第1期24卷 37-42页

作者：李玉强赵哈林陈银萍中国科学院寒区旱区环境与工程研究所兰州730000 兰州交通大学环境与市政工程学院兰州730070

全球碳循环研究中发现 ,目前已知碳源与碳汇不能达到平衡 ,存在一个很大的碳失汇。大气、海洋和陆地生态系统是人工源CO2 的 3个可能的容纳汇 ,其中陆地生态系统最复杂、最具不确定性 ,因此陆地生态系统碳源与碳汇研究是全球碳循环研究... 详细信息

全球碳循环研究中发现 ,目前已知碳源与碳汇不能达到平衡 ,存在一个很大的碳失汇。大气、海洋和陆地生态系统是人工源CO2 的 3个可能的容纳汇 ,其中陆地生态系统最复杂、最具不确定性 ,因此陆地生态系统碳源与碳汇研究是全球碳循环研究的核心问题之一。大气成分监测、CO2 通量测定、森林资源清查以及模型模拟等方面的研究都表明 ,CO2 施肥效应、氮沉降增加、污染、全球气候变化以及土地利用变化 ,是影响陆地生态系统碳储量的主要生态机制 ,但不确定在过去的 10～ 10 0年以及未来哪一种机制起最主要的作用。

关键词：陆地生态系统碳源碳汇影响机制

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Complex Characteristic Analysis of Passenger Train Flow Network

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Complex Characteristic Analysis of Passenger Train Flow Netw...

2010 Chinese Control and Decision Conference

作者： Xuelei Meng~(1,2),Limin Jia~1,Jinxin Xie~1,Yong Qin~1,Jie Xu~1 1.State Key Laboratory of Rail Traffic Control and Safety,Beijing jiaotong university,Beijing 100044,China 2.Traffic and Transportation School,lanzhou jiaotong university,lanzhou 730070,China

＜正＞Train flow network is a complex *** small-world and scale-free characteristics are analyzed.A computing example is carried out to show how to calculate the average path length and the cluster *** characteristics of the network built with all the trains of a national service plan are analyzed by the same *** proves that the train flow network is a typical complex network and it is robust to the random disturbance while vulnerable to the deliberate *** analysis of the results can give valuable supporting information for the railway operators.

关键词： Train Flow Network Robustness Vulnerability

MODELING OF THE PRIORITY SCHEDULING INPUT-LINE GROUP OUTPUT WITH MULTI-CHANNEL IN ATM EXCHANGE SYSTEM

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Journal of Electronics(China) 2006年第3期23卷 404-409页

作者： Lu Zhaoyi Lv Lei Lu Mai Information Engineering College Qingdao University Qingdao 266071 China International Business College Qingdao University Qingdao 266071 China Key Lab. of Opto-electronic and Intelligent Control Ministry of Education Lanzhou Jiaotong University Lanzhou 730070 China

In this paper, an extended Kendall model for the priority scheduling input-line group output with multi-channel in Asynchronous Transfer Mode （ATM） exchange system is proposed and then the mean method is used to model mathematically the non-typical non-anticipative PRiority service （PR） model. Compared with the typical and non-anticipative PR model, it expresses the characteristics of the priority scheduling input-line group output with multi-channel in ATM exchange system. The simulation experiment shows that this model can improve the HOL block and the performance of input-queued ATM switch network dramatically. This model has a better developing prospect in ATM exchange system.

关键词： Asynchronous Transfer Mode (ATM) network Priority Modeling research

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金属拱形波纹屋盖结构的稳定性计算

特种结构 2007年第1期24卷 24-27页

作者：陈波兰州交通大学土木工程学院 730070

金属拱形波纹屋盖结构是一种新型的金属拱形薄壳结构。本文从理论出发,将金属拱形波纹屋盖中带有波纹的腹板和底板等效成正交各向异性板,按照等效膜面刚度原则推导出等效弹性常数的计算公式,并建立起简化计算模型。利用ANSYS程序,对该... 详细信息

金属拱形波纹屋盖结构是一种新型的金属拱形薄壳结构。本文从理论出发,将金属拱形波纹屋盖中带有波纹的腹板和底板等效成正交各向异性板,按照等效膜面刚度原则推导出等效弹性常数的计算公式,并建立起简化计算模型。利用ANSYS程序,对该结构进行了稳定性研究,并与试验结果进行了比较,数据符合较好。

关键词：金属拱形波纹屋盖有限元分析稳定性

Synthesis,structure and fluorescence property of a heterotrinuclear copper(Ⅱ)-barium(Ⅱ) complex

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Synthesis,structure and fluorescence property of a heterotri...

“国际化学年在中国”——2011年中西部地区无机化学化工学术研讨会

作者： Xiu-Yan Dong,Yin-Xia Sun,Jin-Shan Wei,Jian-Bao Xu,Wen-Kui Dong~* (School of Chemical and Biological Engineering,lanzhou jiaotong university)

Metallohosts have attracted much interestbecause they would have various functions of the parent metal *** and redox properties arising from hybridization between the organic and metal complex moieties are successfully applied to guest sensing or *** of coordination bonds between a metal and ligands is also an important factor to construct supramolecular

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西北民族传统体育发展现状及对策研究

搏击(武术科学) 2010年第7期07卷 78-79页

作者：贾炜兰州交通大学体育部

民族传统体育的发展要求建构一个深入的民族文化价值体系。文章运用文献资料法和问卷调查法等研究方法,对西北民族传统体育发展状况进行了调查分析,并对西北民族传统体育发展提出相应的对策与建议,为西北少数民族传统体育发展提供参考... 详细信息

民族传统体育的发展要求建构一个深入的民族文化价值体系。文章运用文献资料法和问卷调查法等研究方法,对西北民族传统体育发展状况进行了调查分析,并对西北民族传统体育发展提出相应的对策与建议,为西北少数民族传统体育发展提供参考依据。

关键词：民族传统体育民族文化价值体系

Synthesis and crystal structure of 5,5′-Dimethoxy-2,2′-[(pentane-1,5-diyldioxy)bis(nitrilomethylidyne)] diphenol

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Synthesis and crystal structure of 5,5′-Dimethoxy-2,2′-[(p...

甘肃省化学会二十六届年会暨第八届中学化学教学经验交流会

作者： Sun Yin-Xia,Fu Yan-Lin,Li Li,Dong Xiu-Yan,Wang Li & Dong Wen-Kui~* School of Chemical and Biological Engineering,lanzhou jiaotong university

Salen-type compound and its derivatives are among the most prevalent mixed-donor ligands in the field of modem coordination chemistry in which there has been growing interest,mainly because of their interesting and imponant properties,including optical features,catalytic activity in hydration of acrylonitrile and magnetic

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