摘要

汽车稳定性控制是通过车载控制系统实时调整车辆的运行状态,使车辆能够按照驾驶员的意图行使,并防止车辆失稳的汽车主动安全装置,是当前国际上汽车主动安全领域的研究热点。随着控制技术的发展和系统成本的降低,将很有可能全面代替ABS成为现代汽车的标准装备。

在国外,最近几年汽车稳定性控制得到了快速地发展,已经开始在中、高级轿车上大量装备;而我国在此领域的研究刚刚起步,现在开展这项研究对我们来说具有重要的现实意义和广阔地应用前景。

本文采用ADAMS/Car和MATLAB/Simulink联合仿真方法,对模糊控制整车模型的操纵稳定性进行了分析。在ADAMS/Car环境中建立了整车虚拟样机模型;给出了模糊控制规则,并利用MATLAB/Simulink建立了整车模糊控制器模型,通过对四个车轮制动器制动力矩的控制来实现汽车稳定性控制。并联合ADAMS/Car中建立的整车虚拟样机模型和MATLAB/Simulink中建立的控制器模型进行了操纵稳定性的评价试验仿真。 仿真结果表明,采用模糊控制的整车操纵稳定性比未采用控制的整车性能要好。

关键词：气动系统  比例调节阀 匀速系统  降沙机

Abstract

Vehicle Stability Control (VSC) is an active safety device, which lets the vehicle run following the driver’s intention to prevent vehicle from losing stability. Now, VSC is the international research focus in the vehicle active safety field. With development of control techniques and decrease of control system cost, VSC will replace ABS to be the standard device of modern vehicles.

In foreign countries, vehicle stability control in recent years has been rapid development, has already begun in the High on the large number of cars and equipment, while China's research in this area has just begun, now in this study is important for us, the reality Significance and broad application prospects.

In this paper, ADAMS / Car and MATLAB / Simulink joint simulation method, the fuzzy control model of vehicle handling and stability were analyzed. In ADAMS / Car environment in the establishment of a virtual prototype model cars; given fuzzy control rules and use MATLAB / Simulink established a fuzzy controller model vehicle, through the four wheels Brake torque control to achieve vehicle Stability control. And the ADAMS / Car vehicle in the establishment of the virtual prototype models and MATLAB / Simulink in the model established by the Controller of the manipulation of the stability of the evaluation test simulation. The simulation results show that fuzzy control of the vehicle handling and stability than the failure to use control of the vehicle better performance.

    Key　words：Pneumatic system 、Proportional control valve、Uniform system、 Sha-down

目录

汽车闭环系统的设计与研究... 1

摘要... 1

Abstract 2

第1章绪论... 3

1.1本文的研究目的和意义... 3

1.2汽车稳定性闭环控制的国内外研究现状... 4

1.3汽车稳定性控制的基本结构... 8

1.3.1传感器... 8

1.3.2液压调节器... 9

1.3.3电子控制器... 9

第2章整车多体系统建模... 9

2.1概述... 9

2.2整车多体系统建模... 10

2.2.1前悬架系统的建模... 11

2.2.2转向系的建模... 13

2.2.3制动系统的建模... 14

2.2.5车身系统的建模... 17

2.2.6驾驶员模型... 17

2.2.7整车轮胎的建模... 18

3.气动技术的特点及其设计计算... 20

3. 1气动技术的应用... 20

3. 2气动技术的特点... 20

3. 2. 1优点... 20

3.2.2缺点... 21

3.3气动系统的设计计算... 21

3.3.1 气动基本回路... 21

3.1.3速度控制回路... 21

3.1.4 位置控制回路... 22

3.1.5 基本逻辑回路... 22

3.2 常用回路... 22

4.气动比例阀... 23

4. 1气动比例阀的分类... 23

4.1. 2喷嘴一挡板式比例控制阀... 23

4.1. 2. 1力马达驱动... 24

4. 1. 2. 2力马达驱动... 24

4.2.2.3压电晶体驱动... 26

5.气动系统与闭环统的设计... 28

5.1气动系统设计的主要内容及设计程序... 28

5.1.1明确工作要求... 28

5.1.5 选择气动辅件... 29

5.1.6 确定管道直径、计算压力损失... 29

5.1.7 选择空压机... 29

5.2闭环控制系统... 29

5.2.1反馈控控制系统... 30

5.2.1闭环系统的总体电路图... 30

结论... 31

参考文献... 32