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 ...
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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 ...
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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.
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 influenc...
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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.
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 qualit...
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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.
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 predicti...
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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.
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...
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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.
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...
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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 ...
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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-t...
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