具有两系悬挂装置的带轉向架的客車可以看作为一个多自由度振动系統。合理选擇与車辆相当的振动系統計算簡图以及采用一系列假設条件(这些假設条件并不十分影响計算結果的准确度,但却給运动方程带来了很大的簡化),这就可以用在实踐中能够实現的方法来分析研究車辆的振动。如果单独 A bogie with a two-series suspension can be considered as a multi-degree-of-freedom vibration system. Reasonable choice of vehicle-equivalent vibration system calculation diagram and the use of a series of assumptions (these assumptions do not affect the accuracy of the calculation results, but to a great simplification of the equation of motion), which can The vibration of the vehicle can be analyzed and studied with methods that can be implemented in practice. If alone