本文選題：葉尖定時 + 虛擬儀器��； 參考：《南京航空航天大學(xué)》2016年碩士論文

【摘要】：旋轉(zhuǎn)機械是我國國民經(jīng)濟和國防事業(yè)當中有著廣泛應(yīng)用的機械設(shè)備,而作為其核心部件的旋轉(zhuǎn)葉片的性能直接影響這個系統(tǒng)的安全性和穩(wěn)定性。分析和監(jiān)測葉片振動信號是一種維護葉片安全性能的有效方法。本文采用虛擬儀器技術(shù)搭建了基于葉尖定時原理(Blade Tip-timing)的葉尖定時采集系統(tǒng)對旋轉(zhuǎn)葉片的振動性能參數(shù)進行采集以及分析并且進行了深入的研究。論文最后完成了相關(guān)的葉片振動性能測試實驗,實驗結(jié)果顯示采集系統(tǒng)搭建正確。論文主要內(nèi)容如下:(1)首先,介紹了旋轉(zhuǎn)葉片的結(jié)構(gòu)與受力分析,分析了葉片的分類和類型,葉片振動的固有頻率以及葉片振動的坎貝爾圖。從理論上了解了旋轉(zhuǎn)葉片的振動特征,其次介紹了葉尖定時測振原理。然后介紹了本文所搭建的葉尖定時測振系統(tǒng)的構(gòu)成,包括使用的葉尖定時傳感器以及所用的高速數(shù)據(jù)采集卡等設(shè)備。(2)根據(jù)虛擬儀器的設(shè)計步驟來設(shè)計開發(fā)葉尖定時采集系統(tǒng)。首先對虛擬儀器需求分析進行了劃分,其次依據(jù)需求分析進行系統(tǒng)框架設(shè)計、主界面設(shè)計及各功能模塊設(shè)計;然后分開介紹各功能模塊,最終形成具有良好的有著人機交互能力特點的虛擬儀器測試系統(tǒng);其后根據(jù)測試用例對各設(shè)計模塊進行測試,驗證了各功能模塊的編程正確性,達到了預(yù)期效果。(3)虛擬儀器葉尖定時采集系統(tǒng)應(yīng)用于實驗室現(xiàn)有的葉片轉(zhuǎn)子實驗臺進行葉片性能測試實驗,結(jié)果表明系統(tǒng)實現(xiàn)了預(yù)期目標,證明了該虛擬儀器的實用性和正確性。
[Abstract]:Rotating machinery is widely used in national economy and national defense in China. The performance of rotating blade, which is the core part of rotating machinery, directly affects the safety and stability of the system. Analysis and monitoring of blade vibration signal is an effective method to maintain blade safety performance. In this paper, a blade tip timing acquisition system based on blade tip timing principle (Blade Tip-timing) is built by using virtual instrument technology to collect and analyze the vibration performance parameters of rotating blades. Finally, the experiment of blade vibration performance is completed, and the experimental results show that the collection system is correct. The main contents of this paper are as follows: (1) firstly, the structure and force analysis of rotating blade are introduced, and the classification and type of blade, the natural frequency of blade vibration and Campbell diagram of blade vibration are analyzed. The vibration characteristics of rotating blades are theoretically understood, and the principle of tip timing vibration measurement is introduced. Then the paper introduces the structure of the blade tip timing vibration measuring system, including the blade tip timing sensor and the high speed data acquisition card, etc.) according to the design steps of the virtual instrument, the blade tip timing acquisition system is designed and developed. Firstly, the requirement analysis of virtual instrument is divided, then the system frame, the main interface and the functional modules are designed according to the requirement analysis, and then the functional modules are introduced separately. Finally, a virtual instrument test system with good human-computer interaction ability is formed. Then, according to the test cases, each design module is tested, and the programming correctness of each functional module is verified. The results show that the system has achieved the desired results. The results show that the system has achieved the desired goal, and has been applied to the blade performance test of the existing vane rotor test bench in the laboratory. The practicability and correctness of the virtual instrument are proved.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP274.2

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本文編號：2005970