基于CarSim与Simulink联合仿真的轮式拖拉机舒适性分析

Analysis of Comfort of Wheeled Tractor Based on Joint Simulation of Car Sim & Simulink

根据滤波白噪声路面数学模型在Simulink中建立了D级路面仿真模型,利用Car Sim-Simulink联合仿真方法建立了东风404轮式拖拉机的车辆动力学模型,结合建立的模型进行了在车速分别为10、30、50 km/h时的舒适性仿真分析,结果表明整车的舒适性有待提高.探索了在Simulink中建立路面模型的方法及利用CarSim-Simulink研究整车舒适性分析的途径,为进一步进行整车动力学分析提供了依据.

The D-level road surface simulation model is established in Simulink based on the mathematical model of filtered white noise pavement. The vehicle dynamics model of Dongfeng 404 Wheeled Tractor is established by using the combined simulation method of Car Sim-Simulink. Combined with the established model,the comfort simulation analysis is performed at the speeds of 10 km/h,30 km/h and 50 km/h respectively. The results show that the comfort of the vehicle needs to be improved. This paper explores the method of establishing the road model in Simulink and the way of using Simulink-Car Sim to study the way for the analysis of vehicle comfort,which provides the basis for further analysis of vehicle dynamics.