论文标题
电击吸收器动态行为的通用非线性模型
A universal nonlinear model for the dynamic behaviour of shock absorbers
论文作者
论文摘要
现代的液压减震器表现出大量非线性效应，例如滞后和高流速的不稳定性。尽管在几乎所有车辆中都广泛应用，但无论是在越野和越野车上还是一种通用的分析模型，它捕获了基本的减震器动力学和可压缩性效果，从而缺乏各种常见的阻尼器体系结构。本文介绍了这样的模型，并从单托管和piggy背类型的阻尼器的第一原理中得出了方程系统。通过将模型应用于典型的悬架配置，可以计算所有相关的系统变量，例如压降，SHIM堆栈偏转和阻尼力。可以轻松预测在操作过程中可能很危险的非线性振荡和磁滞回路。用数学模型获得的结果经过验证，并且与测试基准测量值非常吻合。此外，提出的方法被证明很容易修改，可以描述当今使用的其他液压减震器几何形状中的物理过程。
Modern hydraulic shock absorbers display a wealth of nonlinear effects such as hysteresis and instabilities at high flow rates. Despite their wide application in practically all vehicles, both on- and off-road, a universal analytical model that captures the essential shock absorber dynamics and compressibility effects for various common damper architectures is lacking. This paper presents such a model and derives its system of equations from first principles for dampers of monotube- and piggyback-type. By applying the model to a typical suspension configuration, all relevant system variables, such as pressure drop, shim stack deflection, and damping force, are computed. Nonlinear oscillations and hysteresis loops, which might prove dangerous during operation, can be predicted effortlessly. The results achieved with the mathematical model are validated and agree well with test bench measurements. Furthermore, the presented approach is shown to be easily modifiable to describe the physical processes within other hydraulic shock absorber geometries in use today.
