主动转向技术在汽车侧向稳定性控制中的应用
Application of Active Steering Technique in the Control of Vehicle Lateral Stability
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摘要: 以汽车2自由度模型作为参考模型, 利用主动转向技术建立了一种提高汽车侧向稳定性的控制方法。该方法采用主动转向技术来改变转向轮的转向角度, 从而有效减少汽车的侧向力, 来提高汽车的侧向稳定性能力。在8自由度汽车动力学模型的基础上, 运用主动转向技术的控制策略进行了汽车的性能仿真分析。与未采用侧向稳定性控制系统的汽车动力学分析结果相比, 该方法能够较好地提高汽车的侧向稳定性能力, 增加汽车的主动安全性。Abstract: Based on the two Dofs vehicle model, a control strategy for improving vehicle lateral stability is developed with the application of active steering technique in this paper. It is convenient to change the wheel steering angle by using active steering technique. Furthermore, the vehicle lateral stability performance can be improved along with the change of side forces via the changing of wheel steering angle. A simulation is conducted for the analysis of the vehicle dynamics characteristics, especially, the lateral stability with the use of an 8 Dofs vehicle model. From the comparison between the modeling results and that of the vehicle without the control system, the vehicle lateral stability is ameliorated by using the control strategy.