基于Labview-RT和CarSim的EPS硬件在环试验台开发与仿真研究

Development and simulation research of EPS hardware-in-the-loop test platform based on Labview-RT and CarSim

文章以电动助力转向系统(electric power steering,EPS)硬件在环试验台为研究对象,对传统方法中使用二自由度车辆模型建立的试验台进行了介绍,并提出采用CarSim软件提供的二十七自由度车辆模型建立硬件在环试验台。基于CarSim软件建立的试验台使用Labview软件并以PXI实时系统为运行环境,采用伺服电机模拟转向阻力矩。试验结果表明,该试验台有更好的试验效果,可以模拟出车辆在不同工况下运行的自回正效果,为EPS控制策略开发提供了良好的试验平台。

Taking the electric power steering（EPS） hardware-in-the-loop test platform as the research object, the traditional method using two degrees of freedom vehicle model is introduced, and the method using CarSim software with 27 degrees of freedom vehicle model to design hardware-in-the- loop test platform is put forward. The test platform based on CarSim software adopts the Labview software and PXI real-time system as the operating environment, and the servo motor is used to simu- late the steering resistance torque. Test results show that the presented test platform has a better test effect, which can simulate the positive return of the vehicle under different conditions and provide a better platform for the development of EPS control strategy.