基于多目标模糊控制的电动汽车整车控制策略优化——汽车毕业设计.doc

基于多目标模糊控制的电动汽车整车控制策略优

Fuzzy Control Based on Multi-objective Control Strategy for Electric Vehicle                     
Optimal

  摘      要
 
    在电池方面的关键技术没有突破之前，利用现代化控制技术，对纯电动汽车的整车性能进行优化已经是电动汽车向前发展的一大趋势。在进行优化控制过程中，纯电动汽车是一个非常复杂的电子整合系统，目标函数不止一个，这时把优化的多个目标函数中最希望优化的函数作为目标函数，其他目标函数作为限制条件，这样不仅简化了控制策略，而且使我们的重点目标函数更加突出，从而得到理想的结果。
本文中，选择经济性作为最希望优化的目标函数，动力性、舒适性、安全性作为限制条件，利用模糊控制策略对目标函数进行优化。本文章节脉络清晰，首先介绍了电动汽车的发展情况，接着对电动汽车的优点与传统燃油汽车进行了对比，然后介绍了电动汽车的基本结构和关键技术。对纯电动汽车有了一个全面的了解后，根据设计要求对纯电动汽车的电机和电池参数进行优化匹配，第三章主要是对模糊控制策略的原理、模糊控制器、模糊控制器设计步骤等进行了介绍，并在matlab中设计出风和要求的模糊控制器。第四章主要介绍了在advisor中对整车建模，文章最后，对整车进行了仿真验证，通过比较得出结论。

关键词： 纯电动汽车， 模糊控制策略， 整车建模， 优化

ABSTRACT

Before the key technology in the batteries does not break, using of modern control technology to optimize vehicle performance is already a major trend. During the process of optimal control, the pure electric car is a very complex electronic integrated systems and more than one objective function,  then we optimize the objective function of a number of functions that most want to optimize the objective function, other objective functions as constraints This not only simplifies the control strategy, and the focus of our objective function is more prominent, and thus get the desired results.
In this article, select the economy as the most want to optimize the objective function, power, comfort, safety as a constraint, the fuzzy control strategy to optimize the objective function. This section, clear structure, first introduced the development of electric vehicles, then the advantages of electric vehicles and conventional fuel vehicles were compared, and then introduces the basic structure of electric vehicles and key technologies. Of pure electric vehicles have a comprehensive understanding, based on the design requirements of the pure electric car motors and batteries to optimize the parameters match, the third chapter is the principle of fuzzy control, fuzzy controller, fuzzy controller design steps, etc. Introduced, and the wind in matlab and requirements in the design of fuzzy controller. The fourth chapter describes the advisor in the vehicle model, Finally, a simulation of the vehicle verified by comparing to a conclusion.

Key words:   Pure Electric Vehicles,  Control Strategy,  Modeling vehicle, Optimization

目  录

摘要 I
ABSTRACT II
1 前言 1
1.1 研究的目的和意义 1
1.2 国内外相关研究的现状与发展趋势 2
1.2.1国外情况： 2
1.2.2国内情况: 3
1.3纯电动车及其相关技术 3
1.3.1 电动汽车的组成： 4
1.3.2纯电动汽车的主要参数 4
1.3.3 纯电动汽车的关键技术： 5
1.3.4 整车控制 5
2 纯电动汽车驱动系统参数选择 6
2.1 电动汽车的基本参数 6
2．2 电机功率的选择 7
2.2.1根据最高车速选择 7
2.2.2根据加速性能要求选择 7
2.2.3根据最大爬坡度要求选择 9
2．3电机转矩和转速的选择 9
2.4 主减速传动比和变速箱传动比的选择 11
2.5 动力电池组参数选择 12
2.5.1动力电池组类型 12
3 整车控制策略及模糊控制 14
3.1纯电动汽车整车控制策略概述 14
3.2模糊控制概述 15
3.2.1模糊数学的基础知识 15
3.2.2模糊控制原理 17
3.3控制策略及规则 17
4 建模与仿真 21
4.1建模概述 21
4.2纯电动汽车能耗模型的建立 21
4.1.1行驶工况的建模 22
4.1.2行驶阻力模块 22
4.1.3变速器模块 23
4.1.4电机效率模块 24
4.1.5蓄电池模块 25
4.1.6能耗计算模块 26
4.1.7整车模型 27
4.2控制策略的仿真验证 28
5 全文总结 31
参 考 文 献 32