电控液力自动变速器控制单元的设计  

Design of transmission control unit for vehicle's automatic transmission

作　　者：陈杰[1] 张崇巍[1] 孔慧芳[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2010年第10期1488-1492,共5页Journal of Hefei University of Technology：Natural Science

基　　金：科技部支撑计划重点资助项目(2009BAG12B03);安徽省自然科学基金重点资助项目(08040102001)

摘　　要：文章介绍了一个车辆电控液力自动变速器控制单元(TCU)的设计方案,通过换挡机制的研究得到了一个基于油门开度和车速的两参数换挡规律,并将其转换为微控制器软件模块;基于微控制器MC9S12XET256按照自动换挡的性能要求,设计了TCU的硬件电路;重点介绍了采用2种专用芯片的电磁阀驱动电路的设计,并对比例电磁阀驱动电路的性能进行了测试;介绍了主程序和换挡模块的流程。This paper presents a design of the transmission control unit（TCU） for vehicle＇s automatic transmission（AT）.Based on a study on the gear-shifting mechanism,a two-parameter gear-shifting rule is achieved and converted to the curves and tables that can be utilized by microcontroller＇s software.According to performance requirements of AT,the hardware of the TCU is designed based on an adequate microcontroller MC9S12XET256,and the design of the solenoid valve drives composed of specific chips such as TLE6220GP and TLE7242G is presented.The TCU＇s main program and the gear-shifting module that implement the AT＇s function are also introduced in the paper.

关 键 词：自动变速器 换挡规律 变速器控制单元 电磁阀驱动 

分 类 号：TP271.31[自动化与计算机技术—检测技术与自动化装置]