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The development of the Internet of vehicles technology can improve the communication between vehicles, thereby changing the driving behavior of drivers. Therefore, the traditional safe-following model cannot accurately describe the driving behavior and needs to be improved accordingly. First, two key parameters (i.e., drivers' reaction sensitivity and road friction coefficient) are obtained through a comprehensive comparative analysis of influencing factors on the Internet of vehicles environment. And the calculation methods of these two parameters are proposed by using the multilevel comprehensive weighted evaluation method and the BP neural network. Then, these two key parameters are used to improve the traditional minimum safety distance model for adapting to driving behavior under the Internet of vehicles environment. Finally, through setting up simulation experiments and comparative analysis, the relationship between different influencing factors and the minimum safe following distance is obtained, and the influence degree of different influencing factors is sorted. The most important factor affecting car-following safety is the drivers' characteristics. It can provide strong theoretical support for the safe driving assistance system of vehicles., Author(s): Qiang Luo [1]; Meining Ling [2]; Xiaodong Zang [1]; Cong Zhai [3]; Liming Shao [2]; Junheng Yang (corresponding author) [1] 1. Introduction The investigation of lots of traffic accidents [...]

In view of the meshing impact of the gear pairs of the experimental prototype based on the new-type of the planetary reducer with few teeth difference,which is proposed by Xiao Nanping and received the patent for this invention,the three-dimensional model of this reducer established by Solid Works is introduced into the ADAMS to build the model of the virtual prototyping of the reducer.The correctness of this virtual prototype is proved by the simulation of the angular velocity of the input and output shaft and the changing law of the meshing force of the gear pairs with the help of the software ADAMS.And the inertia force caused by the eccentricity of the planet gear has little influence on the meshing force of the gear pairs by comparing the simulation results with the theoretical calculation.And this result can provide the data support for calculating the strength of the gear pairs precisely and analyzing the contact stress of the pairs.

The structure of the new-type of the planetary reducer with few teeth difference,which is proposed by Xiao Nanping and received the patent for this invention are introduced. The finite element model of this reducer box is established by using the software ANSYS Workbench. The statics analysis is carried out,the changing curve for each actual loading conditions of the reducer box,and the changing curve of the maximum stress and the deformation are obtained,this analysis results can provide the data support for the subsequent structure improvement and weight reduction. The natural frequency and vibration type are obtained by completing the modal analysis of this box,and whether the resonance phenomenon happens can be determined by comparing the natural frequency of this reducer with the meshing frequency and the rotational frequency. It also offers a theoretic reference for the structure optimization design and following research of vibration problems for reducers.