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SAE/KSAE 2013 International Powertrains, Fuels and Lubricants Meeting, FFL 2013

作者： Li, Shuhua Li, Jun Li, Nannan Gao, Ying State Key Lab of Automotive Simulation and Control Jilin Univ China

The encouragement for the development of battery electric vehicles (BEVs) has increased in China, especially after the automotive industry planning in 2009. In general, BEVs are associated with a cleaner and more efficient mobility during operation;however the benefits of substituting BEVs for internal combustion engine vehicles (ICEVs) must be evaluated. Vehicle cycle analyses are important tools that provide a comprehensive approach to compare the environmental effects of advanced and conventional vehicles. The goal of this study is to estimate and compare the vehicle cycle energy and emission impacts of a mid-size passenger BEV with a mid-size passenger ICEV in China. It is found that the material production accounts for the majority of the vehicle cycle energy consumption and emissions for the two vehicle types. Comparing the vehicle cycle of the BEV and ICEV, the energy consumption of BEV is 40.0% higher than that of ICEV and the total greenhouse gas (GHG) emissions of BEV is 44.6% higher than that of ICEV, due to the use of energy-intensive materials in the power battery of BEV. Meanwhile, the fuel cycle analyses are used in conjunction with the vehicle cycle analyses to estimate the full automobile lifecycle results. It is found that in the terms of the full life cycle of the ICEV and BEV, the overall energy use of the BEV is 26.6% lower than that of ICEV and the overall GHG emissions of BEV is 12.8% lower than that of ICEV. Copyright © 2013 SAE International and Copyright © 2013 KSAE.

关键词： Energy utilization

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Automatic incident detection algorithm for highways using toll collection data

Automatic incident detection algorithm for highways using to...

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2012 International Conference on Civil, Transportation and Environmental Engineering, CTEE 2012

作者： Li, Qi Jiang, Guiyan College of Transportation Jilin University China State Key Laboratory of Automotive Dynamic Simulation and Control Jilin University China

ISBN: (纸本)9781845647865

In order to break through the limitations of current toll collection data which was only used to charge the driver, the online data collected from toll stations are applied in the research of automatic incident detection from the perspective of information sharing. Through data analysis, it was found that traffic flow can be obtained by using toll collection systems. To overcome the defects and deficiencies of fixed time scale synthetic method, this paper proposed a traffic data synthetic method based on rolling time series. The standard normal deviation of synthetic traffic flow was used to capture the adverse effects of traffic incidents. The proposed algorithm was tested with field data collected from the Hu-Hang-Yong highway in China. The results indicate the ability of the proposed algorithm to significantly alleviate the false-alarm problem, while preserving high detection and low mean time to detect performance. It would be effective in improving the coordination of highway traffic control, traffic information guide and traffic command. © 2013 WIT Press.

关键词： Time series

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The realization of reusability in vehicular software development under AUTOSAR

The realization of reusability in vehicular software develop...

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2013 IEEE Conference Anthology, ANTHOLOGY 2013

作者： Wang, Qiang Xin, Baiyu Li, Chao Chen, Hong State Key Laboratory of Automotive Dynamic Simulation Chang Chun China Department of Control Science and Control Engineering Jilin University Chang Chun China

ISBN: (纸本)9781479916603

The amount of vehicle software used in a modern vehicle has dramatically increased in recent years. The complexity of the vehicle software development is the main issue to the manufacturers and the suppliers to overcome. AUTOSAR was founded by the core OEMs and the Tire one suppliers as a de-facto open industry standard for automotive E/E (Electric/Electronic) architecture in world wide. It dedicates to achieve the scalability, flexibility, transferability and reusability of the vehicle software. Among these goals, the realization of reusability is crucial for the reducing of the cost, shortening the developing time and improving the quality of the products. To achieve the reusability of software, the software system should be decoupled from the hardware and the components-based design is used in AUTOSAR. In this paper, we give an overview of the important concepts of AUTOSAR and the interpretation of the realization of software system reuse under the methodology of AUTOSAR is presented. Moreover, a case of vehicle light software design is provided to show the concrete design process for the realization of software reusability. © 2013 IEEE.

关键词： Reusability

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Effect of differential modeling on handling and stability

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FISITA 2012 World automotive Congress

作者： Huang, Rui Zhan, Jun Wu, Jungang China Automotive Engineering Research Institute Co. Ltd. Shanghai China State Key Lab. of Automobile Simulation and Control Jilin University Jilin China

ISBN: (纸本)9783642337949

Research target: There are exists many principle types of limited slip differential. If simplify limited slip differential model to open differential, vehicle handling and stability simulation results will be uncorrected. So 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 additionally. Research 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 paper. Research production: Through research and analyses, build up several principle limited slip differential and transfer case models rightly, and connected with vehicle model perfectly. Innovation: Through vehicle dynamic simulation, it is easy for us to find effects of limited slip differential to handling and stability. Other 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 last. Insufficiency: This paper shows different differential models how to affect handling and stability, but lacking of correlation of the corresponding differential and vehicle test. Conclusion: 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 obviously, and have more effects to front-drive vehicle, different differential models will have a significant impact to handling and stability. Remark: The work was completed with the assistance of National 863 plan (serial number is 2012AA111801). © 2013 Springer-Verlag.

关键词： Friction

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Study on collision warning of non-motorized traffic unit crossing based on cooperative vehicles infrastructure

Study on collision warning of non-motorized traffic unit cro...

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2nd International Conference on Transportation Information and Safety: Improving Multimodal Transportation Systems - Information, Safety, and Integration, ICTIS 2013

作者： Yang, Zhaosheng Mo, Xianglun Yu, Yao College of Traffic and Transportation State Key Lab of Automobile Dynamic Simulation Jilin University Changchun Jilin 130022 China Department of Traffic Info. Engineering and Control Nanling Campus of Jilin University Changchun Jilin 130022 China

ISBN: (纸本)9780784413036

The violating traffic rules adventure will be taken when the non-motor driven traffic unit has waited so long that it exceeded the red light bearing. At this time, the intersection direction in motor vehicles at the end of the green light are eager to cross the intersection and accelerate in the green light time and, accompanied by the line of sight keep out, are now vulnerable to serious traffic accidents. At night, when most of the intersection signal control is the yellow light flashing, the vehicle speed is high, and a non-motor traffic unit has a greater risk to cross the street. In view of the above type analysis braking process, this study constructs the collision model of the intersection between non-motor driven traffic units and motor vehicles and designs a collision warning algorithm process and early warning system. Finally, an intersection test system was conducted in Changchun;the experiment results show that the system has strong reliability. © 2013 American Society of Civil Engineers.

关键词： Multimodal transportation

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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The realization of reusability in vehicular software development under AUTOSAR

The realization of reusability in vehicular software develop...

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IEEE Conference Anthology

作者： Qiang Wang Baiyu Xin Chao Li Hong Chen Department of Control Science and Control Engineering Jilin University Chang Chun P. R. China State Key Laboratory of Automotive Dynamic Simulation Chang Chun P. R. China

关键词： MATlab XML Software design Mathematical model

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Numerical Calculation Method and Study for Frost Heave Deformation of Ground Heat Exchanger Pipe

Numerical Calculation Method and Study for Frost Heave Defor...

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2013 3rd International Conference on Mechanical Materials and Manufacturing Engineering(ICMMME 2013)

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

For the frost heave deformation of ground heat exchanger with U-type heat exchanger pipe in subzero condition,a numerical calculation method was proposed by describing constitutive equations and establishing physical *** finite element simulation study based on ABAQUS code was carried out to explore frost heave deformation behavior of saturated soil and interaction between pipe-soil interfaces,focuses on the deformation of U-type pipe cause by saturated soil frost heave squeezing under the condition of different cooling *** distribution and change law of temperature,displacement,stress and strain on U-type heat exchanger pipe and soil were acquired.

关键词： Ground heat exchanger pipe Deformation Frost heave Numerical calculation method

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dynamic Trajectory Planning for Vehicle Autonomous Driving

Dynamic Trajectory Planning for Vehicle Autonomous Driving

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IEEE International Conference on Systems, Man, and Cybernetics

作者： Sumin Zhang Weiwen Deng Qingrong Zhao Hao Sun Bakhtiar Litkouhi State Key Lab of Automotive Simulation and Control Jilin University Changchun 130025 China General Motors Global R&D Center Warren MI 48090 USA

ISBN: (纸本)9781479906505

Trajectory planning is one of the key and challenging tasks in autonomous driving. This paper proposes a novel method that dynamically plans trajectories, with the aim to achieve quick and safe reaction to the changing driving environment and optimal balance between vehicle performance and driving comfort. With the proposed method, such complex maneuvers can be decomposed into two sub-maneuvers, i.e., lane change and lane keeping, or their combinations, such that the trajectory planning is generalized and simplified, mainly based on lane change maneuvers. A two fold optimization-based method is proposed for stationary trajectory planning as well as dynamic trajectory planning in the presence of a dynamic traffic environment. simulation is conducted to demonstrate the efficiency and effectiveness of the proposed method.

关键词： autonomous driving dynamic trajectory planning vehicle models trajectory planning Vehicle model Lane changing ride comfort Lane keeping Vehicle performance Automobile driving

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Aerodynamic Optimization of a Simplified SUV Model

Aerodynamic Optimization of a Simplified SUV Model

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International Conference on Digital Manufacturing and Automation (ICDMA)

作者： Jing-yu Wang Chang-hai Yang Xing-jun Hu Bo Guo Key Lab. of Manuf. & Test Tech. for Automobile Parts of Minist. of Educ. Chongqing University of Technology Chongqing Chongqing CN State Key Lab. of Automotive Simulation & Control Jilin University Changchun Jilin CN Lab. of Ultra-Precision Fabrication Changchun Inst. of Equip. & Process Changchun China

The aerodynamics characteristics of square Mira model were researched by simulation and wind tunnel test. The velocity distribution, pressure distribution, drag coefficient and the aerodynamic characteristics around model were achieved. With contras the results of simulation and wind tunnel test, it validated the veracity of simulation. Based on results, the back spoiler was added and the fixing angle was changed. The drag coefficient was achieved. The conclusions provide reference for how to reduce drag coefficient of SUV.

关键词： Manufacturing Automation

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