基于多自由度汽车模型的主动悬架

Active Suspension Based on the MDOF Vehicle Model

在考虑座椅、乘客等因素对汽车舒适性影响的基础上 ,建立了一种适应汽车主动悬架控制研究的多自由度车辆立体模型。在此模型基础上 ,运用LQ控制方法设计了控制器。通过对各种模型的效果进行分析 ,作者提出了最佳控制方案。研究结果显示 :当选择合适的汽车模型 ,即使采用低自由度控制器及其常规的控制方法 。

Considering influence of factors such as seat and passengers, a MDOF(Multi Degree of Freedom)model for active suspension is employed. Based on the derived 8DOF model, a controller for this model is also designed by using LQ control theory. Furthermore the appropriate control scheme is selected by testing various performance indexes. The study shows that the satisfied results can be obtained using an appropriate vehicle model, even if the low order controller and the general control strategy are adopted.