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Optimization of ride comfort and handing stability base on virtual prototyping

机译：基于虚拟样机的乘坐舒适性和操纵稳定性的优化

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摘要

Ride comfort and handing stability are the two important driving features of vehicle. In the process of suspension design, ride comfort and handing stability are two conflicting considerations. Magneto-rheological(MR) fluid dampers are a new class of devices that more suitable for the requirements of automotive applications, including having very low power requirements. According to different driving conditions and body posture, semi-active suspension based on MR damper can coordinate the body posture angle, and reduce the vibration from suspension pass to vehicle body. This paper deals with theoretical analysis and experiments of MR fluid damper in semi-active suspension system. Based on a large number of experimental data, a mathematical MR damper model was adopted to predict both the force-displacement behavior and the complex nonlinear force-velocity response. For the purpose of developing semi-active controller, a detailed vehicle Virtual Prototyping model with steering, frame and semi-active suspensions systems was established by vehicle dynamics simulation software SIMPACK. The co-simulation of ride comfort and handing stability showed that the semi-active suspension designed in this paper was suitable for solving the conflict between ride comfort and handing stability, and improve the ride and handing performance simultaneously.
机译：乘坐舒适性和操纵稳定性是车辆的两个重要驾驶特征。在悬架设计过程中，乘坐舒适性和操纵稳定性是两个相互矛盾的考虑因素。磁流变（MR）流体阻尼器是一类新型设备，它更适合汽车应用的要求，包括具有非常低的功率要求。根据不同的驾驶条件和身体姿势，基于MR减震器的半主动悬架可以协调身体姿势角度，并减少从悬架传递到车身的振动。本文对半主动悬架系统中的MR流体阻尼器进行了理论分析和实验。基于大量的实验数据，采用数学MR阻尼器模型来预测力-位移行为和复杂的非线性力-速度响应。为了开发半主动控制器，通过车辆动力学仿真软件SIMPACK建立了具有转向，车架和半主动悬架系统的详细车辆虚拟原型模型。乘坐舒适性和操纵稳定性的共同仿真表明，本文设计的半主动悬架适用于解决乘坐舒适性和操纵稳定性之间的矛盾，并同时提高乘坐和操纵性能。

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