本文選題：LabVIEW　切入點(diǎn)：C8051F340　出處：《東北石油大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：在工程中，振動(dòng)測(cè)試與信號(hào)分析應(yīng)用極其廣泛，幾乎所有的科學(xué)與工程領(lǐng)域都有所涉及。在現(xiàn)代工程設(shè)計(jì)中，常常利用振動(dòng)信號(hào)來(lái)對(duì)工程結(jié)構(gòu)模型的動(dòng)態(tài)特性進(jìn)行分析、做出評(píng)價(jià)，，從而為工程結(jié)構(gòu)的動(dòng)態(tài)設(shè)計(jì)和改進(jìn)設(shè)計(jì)提供科學(xué)依據(jù)。伴隨著軟件技術(shù)與計(jì)算機(jī)的快速發(fā)展，將虛擬儀器技術(shù)應(yīng)用于振動(dòng)信號(hào)的測(cè)試分析已經(jīng)成為一個(gè)新的發(fā)展方向。 本論文分別對(duì)虛擬儀器、系統(tǒng)設(shè)計(jì)以及實(shí)驗(yàn)驗(yàn)證做了比較詳細(xì)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(dòng)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(jì)算機(jī)組成，其中振動(dòng)傳感器將振動(dòng)信號(hào)變換成標(biāo)準(zhǔn)的模擬電信號(hào)，然后數(shù)據(jù)采集卡將模擬電信號(hào)進(jìn)行A/D轉(zhuǎn)換并將其送入計(jì)算機(jī)緩存中，而計(jì)算機(jī)對(duì)緩存中的數(shù)據(jù)進(jìn)行相應(yīng)的處理。軟件系統(tǒng)是以美國(guó)國(guó)家儀器開(kāi)發(fā)的圖形化編程語(yǔ)言LabVIEW為開(kāi)發(fā)平臺(tái)，采取模塊化編程，完成信號(hào)的采集、傳輸、顯示、存儲(chǔ)以及信號(hào)的分析處理工作。 最后，將所設(shè)計(jì)的系統(tǒng)聯(lián)入實(shí)驗(yàn)，進(jìn)行振動(dòng)信號(hào)測(cè)試，通過(guò)實(shí)驗(yàn)對(duì)系統(tǒng)的可行性與可靠性進(jìn)行驗(yàn)證。同時(shí)，由脈沖錘擊實(shí)驗(yàn)來(lái)測(cè)定被測(cè)對(duì)象的固有頻率，進(jìn)一步得到其振型；又由正弦信號(hào)實(shí)驗(yàn)計(jì)算得到阻尼比。經(jīng)過(guò)實(shí)驗(yàn)，對(duì)測(cè)定值與理論值對(duì)比分析，誤差較小，達(dá)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(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN911.6

【參考文獻(xiàn)】

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(cè)控系統(tǒng)中的應(yīng)用[J];農(nóng)機(jī)化研究;2006年08期

本文編號(hào)：1591446