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毕 业 设 计(论文)
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题 目：
院 系机械工程系专业班级学生姓名指导教师
二○一年六月
Matlab的转子故障振动信号分析
摘要
随着机械行业的日益发展，转子等旋转机械的故障日渐趋多，转子的故障诊断技术受到越来越多的重视，并在世界范围内取得了长足的进步。作为大型机器中不可或缺的部件，有着举足轻重的作用，但，，，，。对发电机及其转子进行状态监测和信号分析，，
转子故障类型主要有四种：转子不平衡、、转子的故障类型及机理Matlab软件，在Matlab软件中建立起转子故障图形程序，利用Matlab中的程序对仿真信号及故障数据进行分析，包括信号的时域图、频域图以及轴心轨迹图，
关键字：转子；Matlab；
ANALYSIS OF ROTOR FAULT VIBRATION SIGNAL BASED ON Matlab
Abstract
With the development of the machinery industry, the rotor and other rotating machinery are becoming more and more common. Rotor fault diagnosis technology has been paid more and more attention, and has made great progress in the world. As an indispensable part of the large machine, although it has a pivotal role, it comes with own shortcomings: high cost, complex structure, a long time to repair the damaged. Therefore, it requires high safety and reliability. The condition monitoring and signal analysis of the generator and its rotor are of great significance to the safety production, and they play a positive role in promoting the development of the industry.
There are four kinds of rotor fault types: rotor unbalance, rotor misalignment, static and dynamic rub impact and oil whirl and oscillation. First, the fault types and fault mechanism of the rotor are clearly defined, and the fault characteristics of different types of faults can be mastered. Establish a rotor failure graphics program in the Matlab software,and the use of Matlab program for the simulation of signal and fault data analysis includes the signal time domain, frequency domain and the axis trajectory Finally known failure mechanism were compared, to test its correctness.
Keywords: rotor; Matlab; failure mechanism; signal analysis
目录
摘要I
AbstractII
1绪论1
1.1课题背景1
1.2 国内外发展概况2
1.3 Matlab软件简单介绍2
1.4 课题研究内容3
1.5 本章小结4
2转子系统典型故障机理与特征5
2.1 转子不平衡5
2.2 转子不对中7
2.3 动静碰摩9
2.4 油膜涡动与油膜振荡10
2.5本章小结11
3振动信号分析方法及仿真分析12
3.1信号的时域分析方法12
3.2 信号的频域分析方法13
3.3 信号的轴心轨迹图14
3.4 仿真分析14
3.6本章小结15
4基于Matlab的转子故障振动信号分析17
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