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本文将最优化理论运用于车辆横向动力学，建立了铁道车辆蛇行运动稳定性和曲线通过折衷最优化设计的数学模型，编制了相应的算法。然后，以高速客车为例，给出了转向架轴箱定位刚度为设计变量、直线上蛇行运动稳定性和曲线通过性能折衷优化为目标函数的计算实例，得到了一系定位刚度参数在可行域内的最优解。最后，由三维曲面以及等值线图从数值分析上证实了解的正确性。
In this paper, the optimization theory is applied to the vehicle lateral dynamics, the stability of the wagon train and the mathematic model of the curve through compromise and optimization design are established, and the corresponding algorithms are compiled. Then, taking the high-speed passenger car as an example, the calculation example of the positioning stiffness of the bogie axle box as a design variable, the stability of the meandering movement in the straight line and the compromise optimization of the curve passing performance are given. The optimal solution. Finally, the correctness of the proof is proved numerically by three-dimensional surface and contour map.