全矢动平衡技术及应用研究
发布时间：2019-02-13 02:42
【摘要】：针对传统动平衡方法中所用的振动信息,都是用一个传感器采自转子的单向信号,存在的测量误差问题,将全矢谱理论和转子动平衡方法相结合,充分利用转子振动的全方位信息,对转子的不平衡故障进行诊断,并在影响系数法的基础上,提出一种高精度的全矢动平衡方法,通过理论分析和实验,对其平衡精度和平衡效果进行研究,最后开发出相应的现场动平衡仪器。本论文的研究工作主要包括： 1.介绍了全矢谱技术在不平衡故障诊断中的应用,提出了全矢动平衡方法的概念。将转子不平衡故障频率特征和全矢谱技术相结合,能够对转子的不平衡故障进行更可靠、更准确的监测和诊断；以转子的全矢不平衡响应作为测量项,既避免了传统单通道信息分析的误差,也能最大限度的减小振动不平衡量。 2.通过理论推导证明了全矢动平衡方法比传统动平衡方法精度高,并进行了试验验证。以分析转子振动模型的振动入手,从不平衡灵敏度的角度,将推导得到的全矢动平衡方法与传统单通道动平衡方法各自的不平衡灵敏度进行比较,得出了全矢动平衡方法具有较高的平衡精度这一结论。 3.通过实验多角度证实全矢动平衡方法在现场动平衡中具有较好的平衡效果。提出基于主振矢的动平衡效率计算公式,以平衡效率作为平衡效果的度量值,通过转子实验台的单面和双面动平衡实验对分别以水平振动、垂直振动和全矢不平衡响应为测量项的动平衡方法平衡效率进行横向比较,得出平衡效果的结论。 4.进行全矢动平衡方法的现场动平衡仪器的开发。在全矢动平衡方法的基础上,利用VC++进行程序界面设计和Matlab进行数据处理,开发现场动平衡的仪器,该仪器既能够实现对传统单通道信号的单面和双面动平衡功能,又能实现单面的全矢动平衡功能。
[Abstract]:In view of the vibration information used in the traditional dynamic balancing method, a sensor is used to collect the one-way signal from the rotor, and the measurement error problem exists. The whole vector spectrum theory is combined with the rotor dynamic balancing method. Using the full information of rotor vibration, the unbalance fault of rotor is diagnosed, and on the basis of the influence coefficient method, a high precision full-vector balancing method is proposed, which is based on theoretical analysis and experiment. The balance accuracy and balance effect are studied, and the corresponding field dynamic balancing instrument is developed. The research work of this thesis mainly includes: 1. This paper introduces the application of total vector spectrum technology in unbalanced fault diagnosis, and puts forward the concept of full vector balancing method. By combining the frequency characteristics of rotor unbalance fault with full vector spectrum technology, the rotor unbalance fault can be monitored and diagnosed more reliably and accurately. Taking the full vector unbalance response of the rotor as the measuring term, the error of traditional single-channel information analysis can be avoided and the vibration unbalance can be minimized. 2. The accuracy of the full vector balancing method is proved to be higher than that of the traditional dynamic balance method by theoretical derivation. By analyzing the vibration of rotor vibration model, from the angle of unbalance sensitivity, the unbalance sensitivity of the derived full-vector balancing method and the traditional single-channel dynamic balancing method are compared. The conclusion that the full vector balancing method has higher balance accuracy is obtained. 3. The experimental results show that the full vector balancing method has a good balance effect in the field dynamic balance. A formula for calculating the dynamic balance efficiency based on the principal vibration vector is presented. The balance efficiency is taken as the measure of the balance effect. The vertical vibration and the full vector unbalance response are the balance efficiency of the dynamic balance method of the measured term and the balance efficiency is obtained. 4. Carry on the development of the field dynamic balance instrument of the full vector balancing method. On the basis of full vector balancing method, the program interface design of VC and data processing of Matlab are used to develop the instrument of field dynamic balance. The instrument can realize the function of single and double side dynamic balance of traditional single channel signal. It can also realize the function of full vector balance on one side.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH165.3
本文编号：2421087
[Abstract]:In view of the vibration information used in the traditional dynamic balancing method, a sensor is used to collect the one-way signal from the rotor, and the measurement error problem exists. The whole vector spectrum theory is combined with the rotor dynamic balancing method. Using the full information of rotor vibration, the unbalance fault of rotor is diagnosed, and on the basis of the influence coefficient method, a high precision full-vector balancing method is proposed, which is based on theoretical analysis and experiment. The balance accuracy and balance effect are studied, and the corresponding field dynamic balancing instrument is developed. The research work of this thesis mainly includes: 1. This paper introduces the application of total vector spectrum technology in unbalanced fault diagnosis, and puts forward the concept of full vector balancing method. By combining the frequency characteristics of rotor unbalance fault with full vector spectrum technology, the rotor unbalance fault can be monitored and diagnosed more reliably and accurately. Taking the full vector unbalance response of the rotor as the measuring term, the error of traditional single-channel information analysis can be avoided and the vibration unbalance can be minimized. 2. The accuracy of the full vector balancing method is proved to be higher than that of the traditional dynamic balance method by theoretical derivation. By analyzing the vibration of rotor vibration model, from the angle of unbalance sensitivity, the unbalance sensitivity of the derived full-vector balancing method and the traditional single-channel dynamic balancing method are compared. The conclusion that the full vector balancing method has higher balance accuracy is obtained. 3. The experimental results show that the full vector balancing method has a good balance effect in the field dynamic balance. A formula for calculating the dynamic balance efficiency based on the principal vibration vector is presented. The balance efficiency is taken as the measure of the balance effect. The vertical vibration and the full vector unbalance response are the balance efficiency of the dynamic balance method of the measured term and the balance efficiency is obtained. 4. Carry on the development of the field dynamic balance instrument of the full vector balancing method. On the basis of full vector balancing method, the program interface design of VC and data processing of Matlab are used to develop the instrument of field dynamic balance. The instrument can realize the function of single and double side dynamic balance of traditional single channel signal. It can also realize the function of full vector balance on one side.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH165.3
【引证文献】
相关硕士学位论文 前3条
1 尚慧娟;面向全矢谱分析的转子动态故障特性研究[D];郑州大学;2012年
2 王星星;柔性多转子串联轴系现场动平衡技术研究[D];北京化工大学;2012年
3 赵营豪;基于模态分析和信息融合技术的转子运动形态分析研究[D];郑州大学;2013年
，本文编号：2421087
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