本文選題：動平衡 + 虛擬儀器��； 參考：《中北大學(xué)》2017年碩士論文

【摘要】：轉(zhuǎn)子不平衡作為引起旋轉(zhuǎn)機械振動的主要激振力,不但會導(dǎo)致轉(zhuǎn)子振動加劇,嚴(yán)重時會引發(fā)安全事故。隨著工業(yè)化的不斷進(jìn)步發(fā)展,旋轉(zhuǎn)機械也越來越多的應(yīng)用到電力、石化、航空航天等各領(lǐng)域中,針對轉(zhuǎn)子動平衡的研究也開始引起人們的高度關(guān)注。近年來,測試領(lǐng)域以及計算機領(lǐng)域的快速發(fā)展,儀器儀表與計算機的結(jié)合已經(jīng)成為儀器技術(shù)發(fā)展的必然趨勢。本文以國內(nèi)外關(guān)于動平衡領(lǐng)域發(fā)展與研究狀況為背景,對剛性轉(zhuǎn)子和撓性轉(zhuǎn)子動平衡的原理和平衡方法進(jìn)行了詳細(xì)的介紹和分析,結(jié)合振型平衡法和影響系數(shù)法各自的優(yōu)缺點,給出了剛性轉(zhuǎn)子和撓性轉(zhuǎn)子測試系統(tǒng)的動平衡方案;結(jié)合信號處理相關(guān)知識,利用互相關(guān)分析法以及相關(guān)濾波原理,對不平衡振動信號進(jìn)行分析處理并提取信號的幅值和相位,實現(xiàn)了轉(zhuǎn)子動平衡測試關(guān)鍵技術(shù);通過LabVIEW實現(xiàn)了測試系統(tǒng)軟件的開發(fā),完成了動平衡測試系統(tǒng)的集成。以NI公司生產(chǎn)的USB-6218數(shù)據(jù)采集卡作為動平衡測試系統(tǒng)構(gòu)建的核心設(shè)備,結(jié)合個人計算機以及信號采集設(shè)備,利用圖形化編程軟件LabVIEW,在動平衡理論基礎(chǔ)上,實現(xiàn)了對系統(tǒng)軟件的信號采集、時域分析、頻域分析、濾波、故障診斷、動平衡算法模塊化設(shè)計。開發(fā)了集測試、分析與計算為一體的虛擬動平衡系統(tǒng),實現(xiàn)了對不平衡振動信號幅值相位的測量提取以及所需配重量的求解,完成了對不平衡量的校正與測試。最后通過WS-ZHT5型多功能轉(zhuǎn)子試驗臺進(jìn)行試驗測試,驗證了動平衡測試系統(tǒng)各模塊的功能。
[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.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM306

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