减速制动工况下自动变速器档位决策  

Gear position decision of automatic transmission in deceleration brake conditions

作　　者：付尧[1] 雷雨龙[1] 刘洪波[1] 李兴忠[1] 李顺波[1] 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2014年第3期592-598,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：吉林大学'985'工程项目;长江学者和创新团队发展计划项目(IRT1017);国家青年科学基金项目(50505014);'863'国家高技术研究发展计划项目(2012AA111712);高等学校博士学科点专项科研基金项目(20120061110027)

摘　　要：针对减速制动工况下,自动变速车辆的两参数换档策略不能适应驾驶员意图及行驶环境变化、不能有效利用发动机辅助制动的情况,在分析发动机辅助制动作用必要性的前提下,综合考虑了驾驶员意图及行驶环境信息,提出了一种以制动时间、车辆负荷度、制动减速度及车速等参数为输入的基于模糊推理的档位决策方法。道路试验结果表明:该控制策略能够适应驾驶员意图及行驶环境变化,有效地利用了发动机辅助制动,提高了自动变速车辆的行驶安全性。Automatic transmission shift schedule with two parameters of the vehicle cannot adapt to the driver＇s intentions and change of driving conditions, and is unable to effectively use engine assisted braking in deceleration brake conditions. Based on the analysis of the necessity of engine assisted braking, a method of gear position decision is proposed, which is based on the fuzzy inference of braking duration, loads, braking deceleration, velocity. This method considers the driver＇s intentions and the external environment. Road tests indicate that the control strategy could adapt to the driver＇s intention and the external driving environment. The engine assisted braking can be used effectively. The control strategy improves driving safety of automatic transmission vehicle.

关 键 词：车辆工程 自动变速器 换档控制策略 减速制动 

分 类 号：U463.2[机械工程—车辆工程]