本文選題：LabVIEW　切入點：C8051F340　出處：《東北石油大學》2014年碩士論文　論文類型：學位論文

【摘要】：在工程中，振動測試與信號分析應(yīng)用極其廣泛，幾乎所有的科學與工程領(lǐng)域都有所涉及。在現(xiàn)代工程設(shè)計中，常常利用振動信號來對工程結(jié)構(gòu)模型的動態(tài)特性進行分析、做出評價，，從而為工程結(jié)構(gòu)的動態(tài)設(shè)計和改進設(shè)計提供科學依據(jù)。伴隨著軟件技術(shù)與計算機的快速發(fā)展，將虛擬儀器技術(shù)應(yīng)用于振動信號的測試分析已經(jīng)成為一個新的發(fā)展方向。 本論文分別對虛擬儀器、系統(tǒng)設(shè)計以及實驗驗證做了比較詳細地介紹。本系統(tǒng)整體上由硬件系統(tǒng)與軟件系統(tǒng)組成。硬件系統(tǒng)由振動傳感器，包括加速度傳感器和位移傳感器、數(shù)據(jù)采集卡NI9324、計算機組成，其中振動傳感器將振動信號變換成標準的模擬電信號，然后數(shù)據(jù)采集卡將模擬電信號進行A/D轉(zhuǎn)換并將其送入計算機緩存中，而計算機對緩存中的數(shù)據(jù)進行相應(yīng)的處理。軟件系統(tǒng)是以美國國家儀器開發(fā)的圖形化編程語言LabVIEW為開發(fā)平臺，采取模塊化編程，完成信號的采集、傳輸、顯示、存儲以及信號的分析處理工作。 最后，將所設(shè)計的系統(tǒng)聯(lián)入實驗，進行振動信號測試，通過實驗對系統(tǒng)的可行性與可靠性進行驗證。同時，由脈沖錘擊實驗來測定被測對象的固有頻率，進一步得到其振型；又由正弦信號實驗計算得到阻尼比。經(jīng)過實驗，對測定值與理論值對比分析，誤差較小，達到了預(yù)期的目的。
[Abstract]:In engineering, vibration testing and signal analysis are widely used, almost all fields of science and engineering are involved. In modern engineering design, vibration signals are often used to analyze the dynamic characteristics of engineering structure model. To provide scientific basis for dynamic design and improved design of engineering structure. With the rapid development of software technology and computer, The application of virtual instrument technology to vibration signal testing and analysis has become a new development direction. This paper introduces the virtual instrument, system design and experimental verification in detail. The system is composed of hardware system and software system. The hardware system is composed of vibration sensor, acceleration sensor and displacement sensor. The data acquisition card, NI9324, is composed of a computer, in which the vibration sensor converts the vibration signal into a standard analog signal, and then the data acquisition card converts the analog signal into an A / D conversion and sends it into the computer cache. The software system is based on the graphical programming language LabVIEW, which is developed by the United States of America, and adopts modular programming to complete the acquisition, transmission and display of signals. Storage and signal processing. Finally, the designed system is combined into the experiment to test the vibration signal, and the feasibility and reliability of the system are verified by the experiment. At the same time, the natural frequency of the object is measured by the pulse hammer test, and the vibration mode is obtained. The damping ratio is calculated by sinusoidal signal experiment. Through the experiment, the error between the measured value and the theoretical value is small, and the expected purpose is achieved.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN911.6

【參考文獻】

相關(guān)期刊論文 前1條

1 黃大星;蔣天弟;王斌;;虛擬儀器技術(shù)在現(xiàn)代測控系統(tǒng)中的應(yīng)用[J];農(nóng)機化研究;2006年08期

本文編號：1591446