[摘要]:在本论文中，我一开始简述了齿轮在生产生活中的作用，从而体现了实时检测齿轮的故障的重要性。紧接着，我就介绍了齿轮基本的几种故障类型大抵有断齿，点蚀，齿轮磨损等现象。由写了齿轮诊断技术的由来，介绍了从一开始到现在齿轮诊断技术的发展，描述了齿轮的振动机理与具体的振动形式，以及齿轮啮合的时候各个部分的数学表达式，系统介绍了时域分析与频域分析的特点以及作用，之后就详细的介绍了实验台的各个部分的结构，以及信号采集装置。 40567
最后一个部分进行matlab仿真，先通过程序画出两组齿轮的时域分析图。接着用时频分析工具箱里的函数对数据进行仿真模拟。得到哪个是故障齿轮。
[毕业论文关键字]：齿轮、故障诊断、MATLAB、仿真
Gear Fault Diagnosis and MATLAB realization
[Abstract]In this paper, I started briefly the role of gear in production and life, which reflects the importance of real-time fault detection gear. Next, I briefly centralized common fault type gear, including gear wear, gear teeth broken, pitting, center of the rotor imbalance basic fault. The origin of the gear by the write diagnostic technology introduced from the beginning to the present development of gear diagnostic techniques, described the vibration mechanism gear vibration and the specific form, and when the gear various parts of mathematical expressions, the system introduced when domain analysis and frequency domain analysis of the characteristics and the role, and then it describes in detail the theoretical knowledge matlab wavelet analysis, and several forms compared with the Fourier transform, which can be seen in software matlab wavelet analysis in Gear Fault the importance of the process of diagnosis.
The final part of the simulation experiment, an experiment began to introduce the required signal acquisition system and the signal acquisition requirements, such as de-noising processing. By comparing the performance of different diagnostic techniques and the advantages of wavelet analysis by different wavelet analysis on the same fault can be seen right gear fault wavelet can better and faster implementation of testing.
[Keywords]: Gear Fault Diagnosis matlab simulation
目录
第1章 绪论 1
1.1 齿轮故障诊断的背景和意义 1
1.2齿轮故障诊断技术的研究内容 2
1.3齿轮故障诊断技术的发展趋势 2
第2章 齿轮故障诊断理论基础 3
2.1 齿轮的故障诊断分析 3
2.1.1 齿轮振动机理分析 3
2.1.2齿轮故障类型 4
2.2齿轮调制 4
2.2.1齿轮调制现象分析 4
(1) 齿轮振动信号的啮合频率调制现象 5
2.2.2齿轮冲击振动的几种基本形式 6
2.3 齿轮故障诊断中信号处理方法 6
2.3.1 齿轮故障时域诊断方法 6
2.3.2 齿轮故障频域诊断方法 7
2.4 本章小结 9
第三章 齿轮故障诊断实验设备 10
3.1旋转机械振动故障试验平台 10
3.1.1 QPZZ-Ⅱ系统结构 10
3.1.2 QPZZ-Ⅱ组成 10
3.1.3试验平台系统模拟装置的部分规格 11
3.2 传感器的选择 11
3.2.1常用的振动测量传感器 11
3.2.2振动测量传感器的选择 12
3.3 基于旋转机械振动故障平台的齿轮振动信号采集 12
3.3.1 试验过程 12
3.3.2 振动信号的采集 13 齿轮故障诊断方法及matlab实现:http://www.youerw.com/zidonghua/lunwen_38968.html