等速万向节驱动轴总成功能测试台的建模与仿真研究-机械制造及其自动化专业论文.docxVIP

第 第 PAGE III 页 Research on Error Identification of NC Machine Tools Based on Multi-step Identification Method ABSTRACT The constant velocity joint driveshaft assembly is an important part of automobile transmission. It can coordinate the necessary traction and speed of vehicle under various driving conditions and ensure that the left and right wheels can adapt to different requirements. The quality and reliability of its work performance will directly impact on motorist safety, stability and comfort. So it must be tested strictly before it used. But there are no equipments can test the all parameters now. This paper discusses the structure, test parameters and test methods of the constant velocity joint assembly performance tester. Set up models of the transmission system, such as gear transmission mechanism, dead axle transmission mechanism, feed screw nut and toothed pulley transmission mechanism. Compare vector control method with direct torque control method. And uses direct torque control method to set up a dynamic simulation model of it to analyze the oscillation angle and moment system, and obtain the simulation curves reflecting the system performance. The results showed that the magnitude of load affects the response time and the torque ripple. To improve the torque ripple, design a fuzzy logic controller and the results showed that the fuzzy logic controller gives a high speed performance and low torque ripple, supplying theoretical basis for improvement of the tester system． Keywords: CVJ tester, Servo system, SIMULINK, Fuzzy logic control 目 录 摘 要 I ABSTRACT III 第一章 绪论 1 1.1 课题来源和意义 1 1.2 等速万向节总成简介 1 1.2.1 等速万向节的传动原理及应用 1 1.2.2 等速万向节总成 4 1.3 等速万向节测试技术概述 6 1.3.1 等速万向节测试指标 6 1.3.2 等速万向节测试技术的发展与研究现状 7 1.4 本文的主要研究内容 8 第二章 测试台结构与功能分析 10 2.1 测试台的总体概述 10 2.2 测试台的结构分析 10 2.2.1 支架与台面结构简介 11 2.2.2 固定端传动系统结构简介 11 2.2.3 滑移端传动系统结构简介 12 2.3 测试台伺服系统的选择 14 2.3.1 伺服系统的简介 14 2.3.2 伺服系统的发展概况 15 2.3.3 测试台伺服系统的选择 16 2.4 测试台的功能分析