基于LabVIEW的电机转子动平衡系统设计

发布时间：2018-05-12 22:25

本文选题：动平衡 + 虚拟仪器　；参考：《中北大学》2017年硕士论文

【摘要】：转子不平衡作为引起旋转机械振动的主要激振力,不但会导致转子振动加剧,严重时会引发安全事故。随着工业化的不断进步发展,旋转机械也越来越多的应用到电力、石化、航空航天等各领域中,针对转子动平衡的研究也开始引起人们的高度关注。近年来,测试领域以及计算机领域的快速发展,仪器仪表与计算机的结合已经成为仪器技术发展的必然趋势。本文以国内外关于动平衡领域发展与研究状况为背景,对刚性转子和挠性转子动平衡的原理和平衡方法进行了详细的介绍和分析,结合振型平衡法和影响系数法各自的优缺点,给出了刚性转子和挠性转子测试系统的动平衡方案;结合信号处理相关知识,利用互相关分析法以及相关滤波原理,对不平衡振动信号进行分析处理并提取信号的幅值和相位,实现了转子动平衡测试关键技术;通过LabVIEW实现了测试系统软件的开发,完成了动平衡测试系统的集成。以NI公司生产的USB-6218数据采集卡作为动平衡测试系统构建的核心设备,结合个人计算机以及信号采集设备,利用图形化编程软件LabVIEW,在动平衡理论基础上,实现了对系统软件的信号采集、时域分析、频域分析、滤波、故障诊断、动平衡算法模块化设计。开发了集测试、分析与计算为一体的虚拟动平衡系统,实现了对不平衡振动信号幅值相位的测量提取以及所需配重量的求解,完成了对不平衡量的校正与测试。最后通过WS-ZHT5型多功能转子试验台进行试验测试,验证了动平衡测试系统各模块的功能。
[Abstract]:Rotor unbalance, as the main exciting force of rotating machinery vibration, will not only lead to the increase of rotor vibration, but also lead to safety accidents. With the development of industrialization, rotating machinery is more and more used in electric power, petrochemical, aerospace and other fields. In recent years, with the rapid development of the field of testing and computer, the combination of instrument and computer has become the inevitable trend of the development of instrument technology. In this paper, based on the development and research status of dynamic balance field at home and abroad, the principle and method of dynamic balance of rigid rotor and flexible rotor are introduced and analyzed in detail, combining the advantages and disadvantages of mode balance method and influence coefficient method. The dynamic balancing scheme of the rigid rotor and flexible rotor test system is given, and the amplitude and phase of the signal are extracted by using the cross-correlation analysis method and the correlation filtering principle, combining with the related knowledge of signal processing. The key technology of rotor dynamic balance testing is realized, and the software of the test system is developed through LabVIEW, and the integration of the dynamic balance test system is completed. Taking the USB-6218 data acquisition card produced by NI Company as the core equipment of the dynamic balance test system, combining the personal computer and signal acquisition equipment, using the graphical programming software LabVIEW, on the basis of the dynamic balance theory. The modularization design of signal acquisition, time domain analysis, frequency domain analysis, filter, fault diagnosis and dynamic balance algorithm is realized. A virtual dynamic balancing system is developed, which integrates test, analysis and calculation. The measurement and extraction of amplitude and phase of unbalanced vibration signal and the solution of the required weight are realized. The correction and test of the unbalance are completed. Finally, the function of each module of the dynamic balance test system is verified by the WS-ZHT5 multifunctional rotor test rig.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM306

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