Lanie Abi, Dafeng Jin, Sheng Zheng, and Liangyao Yu. Study on Comprehensive Control of Vehicle Flip Stability Based on Equivalent Differential Equation. Dynamic Systems and Applications 30 (2021) No.4, 576-586

https://doi.org/10.46719/dsa20213045

ABSTRACT.
With the gradual improvement of automobile popularity, the probability of automobile accidents is also increasing. Among all automobile accidents, rollover accidents account for a large proportion, which attracts more and more attention. According to the statistics of the United States Transportation Bureau, rollover accidents in automobile accidents are only second to collision accidents. Therefore, for the stability test of automobile rollover under the condition of high-speed turning, this paper chooses sport utility vehicles as the research object and makes relevant prevention and control strategies based on the stability results of test. In this paper, based on the three degrees of freedom linear rollover model, the equivalent differential equation for the accuracy calculation of rollover dynamic warning is established, and the deformation degrees of vehicle suspension and the lateral wheel roll is considered. The dynamic equivalent relation of the corresponding differential equations is established by the influence of the turning characteristics in the equation estimation. Based on the judgment of anti-interference factors and dynamic and balance conditions of vehicle rollover stability conditions, the analysis of relevant index of wheel dynamic stability is obtained, and the conclusion that the relevant factors of vehicle dynamic stability are calculated by equivalent differential equation is obtained. The conclusion also plays an important role in improving the accuracy of rollover warning, and active rollover safety system can make outstanding contributions to the future development of vehicles.

Keywords: Equivalent differential equation; the car rolled over; stability; kinetic model.