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2012 2nd International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2012

作者： Zhu, Xiaolin Gao, Qing Wang, Youtang Yu, Ming State Key Lab. of Automotive Simulation and Control Jilin University Changchun 130025 China Department of Thermal Energy Engineering Jilin University Changchun 130025 China College of Materials Science and Engineering Jilin University Changchun 130025 China

ISBN: (纸本)9789078677604

During long-time operation, thermal deformation of heat exchange pipe weaken the capability and reduce the reliability of heat transfer system, especially the heat exchange pipe with initial bending in high temperature storage condition will make problem more seriously. The finite element simulation study based on ABAQUS code was carried out to explore thermal deformation behavior of heat exchange pipe and interaction between pipe-soil interfaces, through establishing the typical initial bending model of pipe body and the description of the basic equations The distribution law of effective stress, displacement and plastic strain at feature edges and the cross section were obtained. The result showed that value of effective stress, displacement and plastic strain distribution of soil are cyclical fluctuation change with different bending deflection and bending direction, the location of maximum bending deflection is the most serious heat transfer attenuation areas. © the authors.

关键词： Finite element method

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The study on measuring method of heat exchange pipe deformation and displacement based on thermal strain

The study on measuring method of heat exchange pipe deformat...

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2012 2nd International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2012

作者： Wang, Youtang Gao, Qing Zhu, Xiaolin Yu, Ming State Key Lab. of Automotive Simulation and Control Jilin University Changchun 130025 China Department of Thermal Energy Engineering Jilin University Changchun 130025 China College of Materials Science and Engineering Jilin University Changchun 130025 China

ISBN: (纸本)9789078677604

Thermal deformation of heat exchange pipe is the significant source of structural variation in ground heat exchange system, which could weaken the capability and reduce the reliability of heat transfer system after long-time operation. The experimental study of thermal deformation of heat exchange pipe should be carried out to explore its thermal behavior. The strain measuring method was applied to the study on thermal deformation and displacement, which was deduced from the measured strain in heat exchange pipe. The verifying experiment was carried out to analyse its feasibility in preliminary simulation environment. The result showed that strain measuring method is applicable and could be conducive to the deformation monitoring of heat exchange pipe in practical projects. © the authors.

关键词： Deformation

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An Intelligent Driver Model with Trajectory Planning

An Intelligent Driver Model with Trajectory Planning

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International IEEE Conference on Intelligent Transportation Systems

作者： Sumin Zhang Weiwen Deng Qingrong Zhao Hao Sun Bakhtiar Litkouhi State Key Lab of Automotive Simulation and Control Jilin University General Motors Global R&D Center

ISBN: (纸本)9781467330640

This paper presents an overall concept and framework of a driver model with the intent to generate realistic traffic flow and motion while reflecting the nature of driving characteristics. The proposed driver model simulates a driver's driving on the road with proper trajectory planning mechanism that takes into account the surrounding environment, including lane and road geometry, surrounding obstacles, and traffic infrastructure;and a decision making process that "mentally" assesses the situation for potential hazards or threats;"obeys" traffic rules, and determines an optimum trajectory to follow safely and comfortably. The concept and framework presented in this paper is demonstrated through simulation.

关键词： Vehicles Trajectory Planning Acceleration Roads Safety Decision making

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Effect of Differential Modeling on Handling and Stability

Effect of Differential Modeling on Handling and Stability

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FISITA 2012 World automotive Congress--Volume 10：Chassis Systems and Integration Technology

作者： Rui Huang Jun Zhan Jungang Wu China Automotive Engineering Research Institute Co Xtd State Key Lab Of Automobile Simulation and ControlJilin University

Research target:There are exists many principle types of limited slip *** simplify limited slip differential model to open differential,vehicle handling and stability simulation results will be *** the paper's target is to build several principle differentials,prove that:different differential have different effects to handling and stability,different transfer case and drive style have the same effects *** method:Build several limited slip differential models and vehicle dynamic models,respectively;then,simulate different drive style vehicle with different differential or transfer case on the Steady state Cornering and steering wheel angle step input maneuver;compared the simulation results to prove the conclusion of the *** production:Through research and analyses,build up several principle limited slip differential and transfer case models rightly,and connected with vehicle model ***:Through vehicle dynamic simulation,it is easy for us to find effects of limited slip differential to handling and *** papers in the field have not cover limited slip differential,transfer case model and vehicle drive style,comprehensively,this paper has researched all of those models,getting some general conclusion at ***:This paper shows different differential models how to affect handling and stability,but lacking of correlation of the corresponding differential and vehicle ***:The compared simulation analysis of vehicle with different forms of differential and drive type shows that:limited slip differential in the low friction coefficient road affects more *** have more effects to front-drive vehicle,different differential models will have a significant impact to handling and ***:The work was completed with the assistance of National 863 plan(serial number is 2012AA111801).

关键词： Limited slip differential Handling and stability Differential model Vehicle model simulation

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INTEGRATED PROTOCOL-OPERATION-controlLER DESIGN BASED ON FLEXRAY COMMUNICATION PROTOCOL

INTEGRATED PROTOCOL-OPERATION-CONTROLLER DESIGN BASED ON FLE...

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The 3rd IEEE International Conference on Network Infrastructure and Digital Content (2012年第三届IEEE网络基础设施与数字内容国际会议(IEEE IC-NIDC2012))

作者： Yinan Xu Chunlei Zhao Xi Chen Weiwen Deng J-G Chung Division of Electronics and Communication Engineering Yanbian University Yanji 133000 China State Division of Electronics and Communication Engineering Yanbian University Yanji 133000 China State Key Lab of Automotive Simulation and Control Jilin University Changchun 130012 China Division of Electronics and Information Engineering Chonbuk National University Jeonju Korea

FlexRay is a high-speed communication protocol with high flexibility and *** the FlexRay communication controller was designed in this research with bus guardian protocol specification using specification and description language (SDL).Based on SDL design principle,the communication controller of FlexRay system and the protocol operation controller of Bus Guardian system were used to design an integrated protocol operation ***,the system was redesigned using Verilog *** FlexRay system was synthesized by Samsung 0.35 um *** proposed chip contains FlexRay communication controller,Bus Guardian and Bus Driver *** is shown through the simulation that the designed system can operate in the frequency range up to 77 MHz.

关键词： Protocol operation controller FlexRay SDL Bus driver

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Method of the vehicle's handling and stability objective evaluation based on multi-variate statistical analysis

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Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) 2011年第SUPPL. 2期41卷 6-11页

作者： Wang, Yan-Hui Guo, Kong-Hui Lu, Bing-Wu Ying, Guo-Zeng Qin, Min State Key Laboratory of Automotive Simulation and Control Jilin University Changchun 130022 China State Key Lab. of Comprehensive Technology on Automobile Vibration and Noise and Safety Control Changchun 130011 China

Taking the vehicle's handling and stability performance targets as research object, the theory of multi-variate statistical analysis was used to find the relationship of the targets each other. Several new handling targets are rebuilt sorted by their importance based on the idea of decreasing dimension, and then the vehicle's handling centesimal system score was get by the objective weighting method. The results show that it's available to evaluate the vehicle's handling performance using fewer targets and the weighting score.

关键词： Principal component analysis

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Traffic adaptive control framework for real time large-scale emergency evacuation

Traffic adaptive control framework for real time large-scale...

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2010 International Conference on Intelligent Computation Technology and Automation, ICICTA 2010

作者： Jiang, Guiyan Meng, Zhiqiang Wu, Zhengyan Li, Qiao Zhang, Chunqin State Key Lab of Automotive Dynamic Simulation College of Automobile Jilin University Changchun China College of Transportation Jilin University Traffic Information Engineering and Control Changchun China Department of Foreign Language and Literature College of Changcheng China University of Geosciences Baoding China

ISBN: (纸本)9780769540771

Large-scale natural or man-made disasters have the potential to cause great loss of life, human injury and extreme property damage. Evacuation from areas at risk is often one of the most feasible strategies that can be undertaken in response to these types of disasters. Evacuating a large population in the shortest possible time is an extremely complicated and difficult task, which urgently needs to look for ways to control the evacuation traffic flow efficiently and effectively in real-time. This paper, on the foundation of adaptive control theory, puts forward a traffic adaptive control framework for real time large-scale emergency evacuation, the characteristic of which integrates a method of prescriptive reference model and the adaptive control system. The prescriptive reference model is applied to specify, in a short-term and rolling-horizon manner, the desired traffic states, which serves as a reference point for the adaptive control. And the adaptive control system combines these desired states and the current prevailing traffic conditions collected by the sensing system to produce real time traffic control schemes. These traffic control schemes are implemented in the field to guide the real world traffic flow to evolve towards the desired states. © 2010 IEEE.

关键词： Adaptive control systems

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key nodes and corridors identifying method for large-scale evacuation network based on information centrality

Key nodes and corridors identifying method for large-scale e...

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2010 2nd International Conference on Future Computer and Communication, ICFCC 2010

作者： Jiang, Guiyan Wu, Zhengyan Li, Qiao Zhang, Chunqin State Key Lab. of Automotive Dynamic Simulation College of Automobile Jilin University Changchun China Traffic Information Engineering and Control College of Transportation Jilin University Changchun China Department of Foreign Language and Literature College of Changcheng China University of Geosciences Baoding China

ISBN: (纸本)9781424458226

Large-scale natural or man-made disasters have the potential to cause great loss of life, human injury and extreme property damage. Evacuation from areas at risk is often one of the most feasible strategies that can be undertaken in response to these types of disasters. Evacuating a large population in the shortest possible time is an extremely complicated and difficult task, which primarily relies on efficient method of traffic planning for emergency evacuation. This paper puts forward a novel method of identifying key nodes and corridors for emergency evacuation based on information centrality, the characteristic of which integrates a method of identifying the efficient nodes and the critical connectivity nodes for evacuation, and a method of identifying the key evacuation corridors. In addition, the approach of connectivity key nodes has been proposed. The experiment results show that the proposed method has rationality and feasibility. ©2010 IEEE.

关键词： Disasters

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Traffic Organization Method for Emergency Evacuation Based on Information Centrality

Traffic Organization Method for Emergency Evacuation Based o...

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The 2nd IEEE International Conference on Advanced Computer control(第二届先进计算机控制国际会议 ICACC 2010)

作者： Chunqin Zhang Zhengyan Wu Yong-yong Tang Guiyan Jiang Traffic Information Engineering and Control College of Transportation Jilin University ChangchunChi State Key Lab of Automotive Dynamic Simulation College of Automobile Jilin University ChangchunChin

ISBN: (纸本)9781424458455;9781424458486;9781424458479;9781424458462

Large-scale natural or man-made disasters have the potential to cause great loss of life, human injury and extreme proptrty damage. Evacuation from areas at risk is often one of the most feasible strategies that can be undertaken in response to these types of disasters. Evacuating a large population in the shortest possible time is an extremely complicated and difficult task, which primarily relies on efficient method of traffic organizahon for emergency evacuation comdors. This paper, on the foundation of efficiency and contmgency, puts forward a novel method of emergency evacuation traffic organization using information centrality of complex network theory, the characteristic of which integrates a method of emergency evacuation corridors optimization and traffic organization method of emergency evacuahon corridors. In addition, the efficiency function in information centrality has been improved. The experiment results show that the proposed method has rationality and feasibility.

关键词： engineering of communications and transportation system information centrality emergency evacuation traffic organization method

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key Nodes and Corridors Identifying Method for Large-Scale Evacuation Network Based on Information Centrality

Key Nodes and Corridors Identifying Method for Large-Scale E...

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The 2010 2nd International Conference on Future Computer and Communication(第二届未来计算机与通信国际会议 ICFCC 2010)

作者： Guiyan Jiang Zhengyan Wu Chunqin Zhang Qiao Li State Key Lab of Automotive Dynamic Simulation College of Automobile Jilin University Changchun Chi Traffic Information Engineering and Control College of Transportation Jilin University Changchun Ch Department of Foreign Language and literature College of Changcheng China University of Geosciences

ISBN: (纸本)9781424458219;9781424458240

Large-scale natural or man-made disasters have the potential to cause great loss of life, human injury and extreme property damage. Evacuation from areas at risk is often one of the most feasible strategies that can be undertaken in response to these types of disasters. Evacuating a large population in the shortest possible time is an extremely complicated and difficult task, which primarily relies on efficient method of traffic planning for emergency evacuation. This paper puts forward a novel method of identifying key nodes and corridors for emergency evacuation based on information centrality, the characteristic of which integrates a method of identifying the efficient nodes and the critical connectivity nodes for evacuation, and a method of identifying the key evacuation corridors. In addition, the approach of connectivity key nodes has been proposed. The experiment results show that the proposed method has rationality and feasibility.

关键词： engineering of communications and transportation system information centrality emergency evacuation

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