摘 要

电驱动主动同步式机械自动变速器（EMT），是在混合动力汽车上进行应用的一种新型动力传动系统。EMT是在AMT自动变速器的基础上进行改进的，机械同步器由啮合套代替，离合器承担承担发动机与电机动力传递和耦合的作用，将电机输出轴与变速器输入轴直接相连。它拥有许多其他机械式自动变速器所不具备的优势，这使它有具有深入研究的价值。而换挡问题作为研究EMT变速器的主要关键，备受关注。本文所研究的是针对的EMT试验台架所设计的监控系统，它能更直观显示EMT换挡过程，采集换挡过程中的关键数据便于更好地进行换挡品质的分析。

本文首先介绍了EMT变速器的结构特点与功能特性，以及EMT变速器试验台架的结构及功能需求。在此基础上进行EMT台架监控系统各模块的初步的设计，并在LabVIEW软件开发平台上将其搭建成功。所设计的EMT台架监控系统功能包括与CAN卡进行通讯，对数据进行采集，解析采集到的数据，在人机界面上将数据清晰简洁的展现出来，以及将得到的数据结果进行储存。

最后将监控系统直接运用到台架试验上对EMT变速器的换挡试验进行监控，通过试验过程中监控系统各功能模块的表现评估监控系统的设计。最终实现了设计目标。

关键词：EMT自动变速器；EMT试验台架；监控系统；LabVIEW

Abstract

Electronic automatic manual transmission (EMT), is a new type of automatic transmission system in the application of hybrid vehicle, which installation of a set of variable speed control system on the basis of AMT automatic transmission, mechanical synchronizer replaced by the clutch, the engine and motor power transmission combine by the clutch, the motor output shaft and transmission input shaft connected directly. It has many advantages other mechanical automatic transmission does not have, which makes it worth in-depth researching. The shift problem as the main key to research EMT transmission, the EMT test bench was designed to solve it. This paper focus on the monitoring system which designed for EMT test bench, it shows the EMT shift process more visually, acquire the key data in the shift process and help us to facilitate a better shift quality analysis.

This paper first introduces the structural characteristics and functional characteristics of EMT transmission, and the structural and functional requirements of EMT transmission test bench. Based on them, the initial module of EMT test bench monitoring system has designed, and then the details of how to build a successful monitoring system based on the LabVIEW software development platform showed step by step. Including the communicate with the CAN card for data acquisition, analyze the obtained data, display the data clearly and concisely and get the data stored.

Finally, the monitoring system is applied directly in the bench test to monitor the gearshift test of the EMT transmission. Through the test process, the performance of the monitoring system is evaluated. And finally achieve the design target.

Key words: EMT automatic transmission; EMT test bench;Monitoring system; LabVIEW

目录

摘要 I

Abstract II

第1章 绪论 1

1.1 研究目的与意义 1

1.2 国内外研究概况 2

1.3 研究内容与技术路线 3

第2章 试验台及监控系统简述 4

2.1 EMT试验台架结构布置 4

2.2 EMT试验台功能分析 4

2.2.1 EMT结构分析与EMT换挡分析 4

2.2.2 EMT试验台功能设计 7

2.3本章小结 7

第3章 试验台监控程序软件设计 8

3.1监控程序软件设计关键技术概述 8

3.1.1 labVIEW软件介绍 8

3.1.2 LabVIEW中的CAN通信函数 8

3.2 监控程序整体架构设计 9

3.3数据通讯模块设计 11

3.3.1 CAN卡打开及初始化设计 11

3.3.2 CAN报文接收与发送模块设计 12

3.4数据处理及数据储存模块设计模块 14

3.4.1数据处理模块设计 14

3.4.2数据储存模块设计 14

3.5监控与显示模块设计 16

3.6本章小结 18

第4章 LabVIEW监控程序测试 19

4.1监控程序功能测试 19

4.2本章小结 22

第5章 总结与展望 23

5.1全文总结 23

5.2研究展望 23

参考文献 24

致谢 26