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WASE International Conference on Information Engineering, ICIE

作者： Hai, Chenguang Ji, Peng Yu, Haifeng State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun 130025 China Hebei University of Engineering Handan 056001 China BeiQi Foton Motor Co. Ltd. Zhu Cheng Plant Technology Center Zhucheng 262200 China

ISBN: (纸本)9780769540801

In Steer Release condition, due to the ability of actual vehicle to resist external small perturbations and self-Adaptive coordination can't be described in the previous vehicle model, the stability of vehicle is described insufficiently. A fine steering system model was established, including Stick-slip friction model and a complete dynamic system consist of wheels, axles, steering tie rod and rack. When encountered with outside interference input, the left and right wheels have the ability to coordinate with each other and ensure the stability of vehicle. The validity of the model is verified through the simulation of typical operating conditions and the fidelity of vehicle model is improved. © 2010 IEEE.

关键词： Stick-slip

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Notice of Retraction: Analysis on influence of suspension compliance characteristics by unsymmetrical rubber bushing

Notice of Retraction: Analysis on influence of suspension co...

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International Conference on Computer Engineering and Technology, ICCET

作者： Ji Peng Lu Pingping Hai Chenguang Hebei University of Engineering Handan China State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun China

This article has been retracted by the publisher.

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Motion planning for an autonomous vehicle driving on motorways by using flatness properties

Motion planning for an autonomous vehicle driving on motorwa...

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IEEE Conference on Control Technology and Applications (CCTA)

作者： Yanfeng Cong Oliver Sawodny Hong Chen Jan Zimmermann Alexander Lutz State key laboratory of automobile dynamic Simulation Jilin University China Institute for System Dynamics University of Stuttgart Stuttgart Germany Jilin University Changchun Jilin CN

In this paper, a motion planning algorithm based on differential flatness for an autonomous vehicle driving in a structured environment with moving obstacles is presented. A descriptions of the structured environment and definitions of safety and availability of the lane are proposed. In order to ensure that the trajectory is feasible and effective, dynamic longitudinal and lateral acceleration constraints are taken into account. simulation results are validated by measurements of the outputs of a 14 degrees of freedom vehicle dynamics model with the generated trajectory as inputs.

关键词： Vehicles Planning Trajectory Acceleration Vehicle dynamics Mathematical model Safety

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Research on influences of rear-view mirror on aerodynamic drag characteristics of truck

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Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences 2010年第SUPPL. 1期37卷 65-69页

作者： Hu, Xing-Jun Yang, Bo Wang, Jing-Yu Li, Ting State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun Jilin 130022 China

The method of Computational Fluid dynamics was applied to numerically simulate and analyze the external flow-field around a truck simplified model with different mirrors based on the truck with no mirror. The influence of the mirrors with different external shapes and styles on the aerodynamic drag characteristics of the body and the whole truck respectively, was studied. The conclusions can be made that the mirrors installed can increase the aerodynamic drag by 3.6% to 5.2%, compared with the mirror removed condition, and that the kinds of rear mirror have an effect on the aerodynamic drags of body and the whole truck, which will provide theoretical reference for styling of rear mirror and its matching with the whole truck.

关键词： Aerodynamic drag

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simulation Study on Ship Motion Control Algorithm Based on AOCS Structure

Simulation Study on Ship Motion Control Algorithm Based on A...

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International Conference on Electrical and Control Engineering (ICECE)

作者： Hongbo Wang Yiping Guo Zhao Pan State Key Laboratory Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun China Jiujiang Branch Shipbuilding Industry Corporation Jiujiang China State Key Laboratory of Automobile Dynamics Simulation (ASCL) Jilin University Changchun China

Based on linear dynamic equation optimization, a particular control structure is introduced in this paper, which can be acronymized as AOCS (Asymptotic Observer + Corrector + Speed control law), and the control quality requirements especially the economy are fullfiled, as to both military ships and civilian ones. it is validated in simulation that AOCS algorithm can be characterized as high control quality, strong robustness and sound practicability in engineering.

关键词： Marine vehicles Heuristic algorithms Motion control Biological system modeling Mathematical model Observers Laboratories

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Rover warning algorithm of heavy commercial vehicle based on model prediction

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Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) 2010年第4期40卷 906-910页

作者： Mai, Li Qu, Wei Zhu, Tian-Jun Yu, Zhi-Xin College of Mechanical Science and Engineering Jilin University Changchun 130022 China College of Automotive Engineering Jilin University Changchun 130022 China State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun 130022 China

Considering that the heavy-duty commercial vehicle(HCV) is vulnerable to rollover because of its high mass-center and bulky dimension, a HCV rollover warning algorithm was developed based on the rollover time prediction. The algorithm was derived from the built simplified HCV rollover warning model and the determination of dynamic rollover threshold. A real-time rollover warning controller to perceive the rollover risk in dangerous conditions was developed and verified by in-situ vehicle tests. The test results show that the derived warning algorithm worked well in the developed controller, it was capable of reminding the driver to take measures timely to avoid vehicle rollover at its approaching.

关键词： Commercial vehicles

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Calibration method for heavy commercial vehicle rollover prediction model

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Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) 2010年第SUPPL.1期40卷 60-65页

作者： Mai, Li Zong, Chang-Fu Wang, Hua-Ji Zhu, Tian-Jun College of Mechanical Science and Engineering Jilin University Changchun 130022 China State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun 130022 China College of Mechanical and Electronic Engineering Hebei University of Engineering Handan 056021 China

For rollover detection and control study, a simplified nonlinear rollover prediction model commercial vehicles was proposed. In order to obtain valid model as close to the target real vehicle as possible, a set of key vehicle parameters were calibrated from experiment data collected from real vehicle field operation tests. Calibration of the vehicle prediction model simulation results compared with the experimental results, it is shown that the prediction model can be accurately predicted the rollover dangerous state.

关键词： Forecasting

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The road friction coefficient estimation based on extended kalman filter

The road friction coefficient estimation based on extended k...

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2009 International Workshop on Intelligent Systems and Applications, ISA 2009

作者： Zhu, Tianjun Zong, Changfu College of Mechanical and Electronic Engineering Hebei University of Engineering Handan China State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun China

ISBN: (纸本)9781424438945

The road-tire friction coefficient has important role in vehicle dynamic control systems like adaptive cruise control system (ACC), vehicle dynamic control (VDC), direct yaw-torque control system (DYC) etc. This paper introduces a new predictive methodology for the estimation of road-tire friction coefficient by using Dugoff tire model and the extended Kalman filter. At the same time, a simulation verification of the road/tire coefficient estimation has been made using the software CarSim7.0. The result shows that the EKF estimation accuracy of road/tire friction coefficient is satisfied very well. © 2009 IEEE.

关键词： Tribology

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The design of rollover prevention system in heavy vehicles based on an robust method

The design of rollover prevention system in heavy vehicles b...

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2009 2nd Conference on Power Electronics and Intelligent Transportation System, PEITS 2009

作者： Zhu, Tianjun Wu, Bingsheng Zong, Changfu College of Mechanical and Electronic Engineering Hebei University of Engineering Handan China State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun China

ISBN: (纸本)9781424442461

This paper presents a novel approach for designing robust vehicle rollover prevention controllers. The control methodology is based on guaranteeing a set of linear matrix inequality (LMI) conditions, which results in controllers that are robust stable. An active braking control is used to decrease the rollover risk of heavy vehicles. The paper also obtains the controller which can adopt the robustness to variations in vehicle speed. The simulation results show that the LMI controller is very effective in vehicle rollover prevention control. ©2009 IEEE.

关键词： Linear matrix inequalities

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Research on rollover early warning algorithm for heavy tractor- semitrailer based on PTR metric

Research on rollover early warning algorithm for heavy tract...

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2009 International Workshop on Intelligent Systems and Applications, ISA 2009

作者： Tianjun, Zhu Changfu, Zong College of Mechanical and Electronic Engineering Hebei University of Engineering Handan China State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun China

ISBN: (纸本)9781424438945

The paper sets up a vehicle dynamic model which is used to determine rollover risk of heavy tractor-semitrailer under various driving conditions;therefore it can help the driver to react accordingly. Using this real-time dynamic model, the Predictive Time to Rollover (PTR), which is decided by Load Transfer Ratio (LTR) of trailer axle when it reaches its limit value, can be determined as the rollover early warning index. The paper suggests a new algorithm of rollover early warning for heavy tractor-semitrailer based on accurate PTR metric which is obtained through EKF observer. The verification of the vehicle dynamic model is realized by Trucksim vehicle model and the simulation results show that the predicted values of the LTR are close to the simulated ones, and hence the proposed algorithm is potentially suitable for application in rollover risk assessment. © 2009 IEEE.

关键词： Light trailers

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