提供全套毕业论文，各专业都有摘 要本文首先对金龙客车的底盘的设计原则和要求进行了分析。底盘设计工作主要包括以下几方面内容：（1）确定整车型式、结构和尺寸；（2）确定整车的主要性能指标；（3）选定各总成的结构型式、尺寸和性能。随后由于缺乏必要的优化数据，遂以一款载货汽车为代替实例，通过分析以该车的等加速行驶工况，等速行驶工况，等减速行驶这三种混合工况下的六循环工况的汽车百公里燃油消耗量为目标函数, 以汽车的动力性为约束条件，应用MATLAB软件中的优化工具箱, 对变速器中的各档齿轮传动比及驱动桥主减速器传动比进行优化改进。此外本文还使用了AUTOCAD软件对金龙客车的底盘部分进行了辅助绘制并使用了UG软件货车的变速器部分部件进行了三维实体建模。 [关键词]：大客车,底盘总布置，动力传动系，动力性，优化，燃油经济性Dynamics Simulation Analysis of SJ AutomobileABSTRACTFirstly the article introduces the design principle and requirement and some problems we should pay attention to when we design. After that the design mainly include some contents hereinafter: (1)confirm the form ,the structure and the size of the omnibus;(2)confirm the master capability;(3)choose the form ,the size and the capability of the assembly.Then due to lack of necessary data optimization, had resorted a truck for example, by analyzing the car to accelerate such driving conditions, constant driving conditions, This deceleration, such as moving the three conditions of the six mixed cycle status of the vehicle 100 km fuel consumption for the objective function, in the car bound for the dynamic conditions, application of MATLAB software optimization toolbox, transmission of the stall gear transmission ratio and Driving Bridge reducer optimize the transmission ratio improved.In addition the article also use the advanced CAD/CAM integrated software AUTOCAD2025 as the assistant tool of the design of the chassis of the omnibus.And using UG software 3D modelded t...
