基于Simulink的汽车动力性仿真实验设计

The Design of Automobile Dynamic Simulation Experiment Based on Simulink

针对汽车动力性分析教学问题,选取某轻型货车实例为研究对象,基于Matlab/Simulink设计汽车动力性仿真分析实验。首先建立动力性基本仿真模型,求解驱动力–行驶阻力平衡图;其次,分别在基本仿真模型基础上搭建坡度计算单元和基于Stateflow的换挡逻辑单元,求解汽车原地起步加速时间及各挡爬坡度。通过图形化的编程搭建车辆动力性仿真模型进行仿真分析的实验方式,在仿真实验中完成所选轻型货车动力性评价指标的计算及整车动力性能分析,帮助学生更好地掌握汽车行驶动力学,了解车辆运行机制,有益于提高学生创新、分析并解决问题的能力。

Aiming at the teaching problem of automobile power analysis, a light truck case is selected as the research object, and the automobile power simulation analysis experiment is designed based on MATLAB/Simulink. Firstly, the basic dynamic simulation model is established to solve the driving force driving resistance balance diagram;secondly, the slope calculation unit and the shift logic unit based on stateflow are built on the basis of the basic simulation model to solve the acceleration time of the vehicle starting in place and the gradient of each gear. Through the graphical programming to build the vehicle dynamic simulation model for simulation and analysis of the experimental way, in the simulation experiment to complete the calculation of the selected light truck dynamic evaluation index and vehicle dynamic performance analysis, to help students better grasp the driving dynamics of the vehicle, understand the vehicle operation mechanism, and improve the ability of students to innovate, analyze and solve problems.