Balancing Detection System Design
Abstract：Rotation mechanics are the main material condition in the field of hydro, chemical engineering and machinery. While rotation mechanics perform efficiently and steady, it can be make sure that enterprises treat more material power and our society develops rapidly. The imbalance of rotors is one of the most influential factors leading to trouble with revolving machines. To resolve the problem of imbalance is not only an essential method to make sure that revolving machines can work well, but also the major guarantee of dealing with the vibration of rotor system.
The handling of dynamic balancing is one of technology measure that must be adopted on revolving parts. On the base of having elaborated the rotor theory of dynamic balancing, this paper have designed a kind of vibration and dynamic balancing analysis system based on the control of the monolithic computer, adopting the method of influence coefficient, which can be the field balancing kit, the electricity-measuring box of the machine of dynamic balancing, at the same time, can measure the vibration of the axle and be the simple vibration analyzer. The system has picked up unbalanced(fundamental frequency)signal amplitude and phase accurately by adopting the fourth order band-pass following filter controlled by phase-lock loop and FFT. On the software programming, it follows modular thought completely, improving programming efficiency and readability.
Keywords: rotor, dynamic balance, influence coefficient, single-chip, microcomputer.
目 录
摘要 I
Abstract II
前 言 III
第1章 绪论 1
1.1 转子平衡的概念 1
1.2 转子动平衡的必要性 1
1.3 转子动平衡方法及测试系统的发展 2
1.4 本论文的主要研究内容 3
第2章 转子动平衡理论 4
2.1 转子动不平衡引起的振动 4
2.1.1 质量不平衡的原因 4
2.1.2 转子质量不平衡引起振动的原因 4
2.1.3 刚性转子和柔性转子 6
2.2 质量不平衡引起振动的特点和两个线性条件 6
2.2.1 质量不平衡引起振动的特点 6
2.2.2 两个线性条件 6
2.3 转子动平衡的几个要点 7
2.3.1 校正面的选择 7
2.3.2 校正平面数目和轴向位里的选取 8
2.3.3 平衡转速 9
2.3.4 平衡时振动测点 9
2.3.5 校正方法 9
2.3.6 试加平衡质量的选取 9
2.4 转子的三种不平衡形式 11
2.5 转子的静平衡和动平衡 12
2.6 转子的平衡方法 12
2.6.1 一般的影响系数平衡法 13
2.6.2 挠性转子的平衡方法 15
2.6.3 刚性转子的平衡方法 17
2.7 定标过程 19
第3章 硬件系统的设计 21
3.1 系统的核心一CPU 21
3.2 电源系统的设计 21
3.3 模拟部分设计 23
3.3.1 传感器配置 24
3.3.2 振动信号采集部份 24
3.3.3 信号处理中的几个关键电路 27
3.4 液晶显示接口技术 31
3.5 键盘接口电路 32
第4章 软件系统的设计 34
4.1 软件的整体设计 34
4.1.1 软件的总体结构 34
4.1.2 软件编程语言 34
4.2 系统初始化及自检模块 35
4.2.1 系统初始化 35
4.3 系统软件主要功能模块 36
4.3.1 系统参数设置模块 36
4.3.2 动平衡分析模块 36
4.4 附属功能模块 44
4.4.1 轴心轨迹的测试 44
4.4.2 振动频谱分析 44
4.5 液晶显示程序及键盘处理程序模块 45
4.5.1 液晶显示模块 45
4.5.2 键盘处理程序 47
4.6 系统的软件抗干扰 48
4.7 系统软件中的复数运算 49
结 论 50
参考文献 51
致 谢 53
附 录 54
