面向对象技术在车辆动力学仿真中的应用

分析了车辆动力学仿真的主要问题,建立了基于面向对象方法的车辆动力学仿真系统的体系结构,分析了系统的类并建立了类图,给出了在车辆动力学仿真中建立usecase和交互图的方法.根据所建立的软件模型,开发了相应的仿真软件.应用本文所开发的软件分别对车辆的直线制动和转弯制动安全性和稳定性这两种工况进行了仿真计算,计算结果符合车辆运行的实际情况.面向对象方法所具有的封装、继承等特点使系统具有结构清晰、扩展和维护方便等特点,为车辆控制系统的开发奠定了基础.

Application of object-oriented technology in vehicle dynamics simulation

By analysing the crucial issues of vehicle dynamic simulation, a vehicle dynamic simulation system has been built using the object-oriented technology. The class of the system is analyzed with a class scheme worked out, and the way to establish a use case and an interaction diagram for used vehicle dynamic simulation are given. The corresponding simulation software is developed from the software model established. The straightline braking and turning braking safety and stability of a vehicle is an important part of vehicle dynamics, and simulation computation is made using the software developed for these two operating conditions, and the computation results are in good agreement with the actual operating conditions of the vehicle. Such special features as seal and package, and inheritance of the object-oriented technology have made the system structure well-defined, and the expansion and maintenance of system easy, thereby providing a basis for the development of vehicle steering system.