重载车辆ECAS/CTIS集成系统耦合机理及主动控制研究

项目名称： 重载车辆ECAS/CTIS集成系统耦合机理及主动控制研究

项目编号： No.51305342

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 机械、仪表工业

项目作者： 庞辉

作者单位： 西安理工大学

项目金额： 25万元

中文摘要： 重载车辆通常单独装配电控空气悬架(ECAS)和轮胎中央充放气系统(CTIS)，其控制协调问题成为提高车辆行驶稳定性和安全性的主要瓶颈。本项目提出一种新型的集成电控空气悬架-ECAS/CTIS悬架系统，并对该系统的耦合机理及主动控制策略进行研究。通过建立ECAS/CTIS悬架系统的非线性耦合动力学模型，揭示空气弹簧与轮胎之间的变刚度耦合机制、空气弹簧与轮胎流固耦合特性及其对车辆动力学特性的影响规律；重点研究ECAS/CTIS悬架高度变化与空气弹簧和轮胎刚度以及充放气特性之间的多元耦合关系，提出ECAS/CTIS悬架系统的分数阶滑模控制策略及其控制器设计方法；通过ECAS/CTIS悬架系统的仿真分析与实验研究，对控制器模型进行验证和修正。本项目旨在解决ECAS和CTIS系统集成带来的技术难题，为车辆电控空气悬架集成系统设计与开发奠定理论和技术基础。

中文关键词： 重载车辆；电控空气悬架；主动控制；滑模控制；自适应模糊控制

英文摘要： Electrically Controlled Air Suspension(ECAS) and Central Tire inflation/deflation System(CTIS) are usually assembled alone in heavy vehicles, and the control coordination of them is becoming the main bottleneck of improving vehicle driving stability and safety. Therefore, this project puts forward a new type of integrated electronically controlled air suspension-ECAS/CTIS suspension system, and studies on the coupling mechanism and its active control strategy of this brand new suspension system. Through establishing the nonlinear coupling dynamic model of ECAS/CTIS suspension, this project reveals the coupling mechanisms and laws between variable stiffness of the pneumatic spring and tire, the fluid-solid coupling characteristics of the pneumatic spring and tire and their impacts on heavy vehicle dynamic characteristics. Besides this, this project makes key research on the multivariate coupling relationships between the height changes of ECAS/CTIS suspension system, dynamic-static stiffness and inflation/deflation of the pneumatic spring and tire, then presents a fractional active sliding mode control strategy and its controller design method. Finally, the simulation analysis and test study of ECAS/CTIS suspension are conducted to verify and correct the proposed controller model. This project aims at solving tec

英文关键词： Heavy vehicle；ECAS；active control；sliding-mode control；adaptive fuzzy control