【摘要】： 電液伺服閥是電液伺服系統(tǒng)中的關(guān)鍵元件，其靜態(tài)和動(dòng)態(tài)特性測(cè)試在電液伺服系統(tǒng)的理論與實(shí)驗(yàn)研究中具有十分重要的意義。隨著計(jì)算機(jī)輔助測(cè)試(CAT)技術(shù)的發(fā)展，電液伺服閥性能測(cè)試技術(shù)取得了很大進(jìn)步，而虛擬儀器技術(shù)的出現(xiàn)，更使電液伺服閥性能測(cè)試技術(shù)達(dá)到了一個(gè)新的高度。本文將虛擬儀器技術(shù)和電液伺服閥性能測(cè)試技術(shù)結(jié)合起來(lái)，利用圖形化軟件工具—LabVIEW，，研制開發(fā)出了基于虛擬儀器的電液伺服閥性能測(cè)試系統(tǒng)，對(duì)電液伺服閥的靜、動(dòng)態(tài)特性測(cè)試原理和方法進(jìn)行了討論和研究，以MOOG伺服閥為測(cè)試對(duì)象進(jìn)行了靜態(tài)特性測(cè)試和試驗(yàn)結(jié)果分析，驗(yàn)證了所開發(fā)的電液伺服閥測(cè)試系統(tǒng)設(shè)計(jì)方案的合理性。本文首先在介紹電液伺服閥特性和測(cè)試遠(yuǎn)離以及虛擬儀器技術(shù)的基礎(chǔ)上，提出了基于虛擬儀器的電液伺服閥測(cè)試系統(tǒng)設(shè)計(jì)方案，以此方案研制了測(cè)試系統(tǒng)的液壓試驗(yàn)單元和測(cè)控單元。 然后根據(jù)電液伺服閥的液橋理論提出了一種負(fù)載流量低壓測(cè)量方法，在所開發(fā)的測(cè)試系統(tǒng)上，利用電液比例閥模擬流量測(cè)量裝置對(duì)所提出的方法進(jìn)行了試驗(yàn)驗(yàn)證，實(shí)現(xiàn)了利用低壓流量計(jì)和壓力傳感器進(jìn)行電液伺服閥負(fù)載流量特性和空載流量特性的測(cè)量。 最后在對(duì)電液伺服閥性能測(cè)試試驗(yàn)研究的基礎(chǔ)上，提出了一種基于虛擬儀器的電液伺服閥故障診斷方法，并進(jìn)行了模擬試驗(yàn)研究，取得了預(yù)期效果。 本系統(tǒng)在Windows XP系統(tǒng)下采用LabVIEW6.1軟件編制了系統(tǒng)軟件，人機(jī)界面友好，程序簡(jiǎn)單，容易閱讀和維護(hù)。信號(hào)源和測(cè)試功能由軟件編程實(shí)現(xiàn)，減少了實(shí)際儀器，降低了系統(tǒng)成本。
[Abstract]:Electro-hydraulic servo valve is a key component in electro-hydraulic servo system. The measurement of its static and dynamic characteristics is of great significance in the theoretical and experimental research of electro-hydraulic servo system. With the development of computer-aided testing (CAT) technology, the performance testing technology of electro-hydraulic servo valve has made great progress, and the appearance of virtual instrument technology has made the performance testing technology of electro-hydraulic servo valve reach a new height. In this paper, the virtual instrument technology and electro-hydraulic servo valve performance test technology are combined, and the performance test system of electro-hydraulic servo valve based on virtual instrument is developed by using graphical software tool-LabVIEW. The principle and method of dynamic characteristic testing are discussed and studied. The static characteristic test and test result analysis of MOOG servo valve are carried out, which verify the rationality of the design scheme of the electro-hydraulic servo valve test system developed in this paper. Based on the introduction of electro-hydraulic servo valve characteristics, test distance and virtual instrument technology, a design scheme of electro-hydraulic servo valve testing system based on virtual instrument is proposed in this paper. The hydraulic test unit and the measuring and controlling unit of the test system are developed. Then, according to the bridge theory of electro-hydraulic servo valve, a low pressure load flow measurement method is proposed. The proposed method is tested and verified by using the electro-hydraulic proportional valve analog flow measurement device on the developed test system. The load flow characteristics and no-load flow characteristics of electro-hydraulic servo valve are measured by low pressure Flowmeter and pressure sensor. Finally, on the basis of the test and research on the performance of electro-hydraulic servo valve, a fault diagnosis method of electro-hydraulic servo valve based on virtual instrument is proposed, and the simulation experiment is carried out, and the expected effect is obtained. The system is programmed with LabVIEW6.1 software under Windows XP system. It has friendly man-machine interface, simple program, easy to read and maintain. The signal source and testing function are realized by software programming, which reduces the actual instrument and the cost of the system.
【學(xué)位授予單位】：廣東工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2004
【分類號(hào)】：TH137

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 劉冰;曹克強(qiáng);胡良謀;;自主式液壓舵機(jī)測(cè)試系統(tǒng)設(shè)計(jì)研究[J];計(jì)算機(jī)測(cè)量與控制;2007年05期

相關(guān)博士學(xué)位論文 前1條

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相關(guān)碩士學(xué)位論文 前10條

1 劉佳東;變轉(zhuǎn)速節(jié)流復(fù)合調(diào)速系統(tǒng)模糊控制仿真與實(shí)驗(yàn)研究[D];安徽理工大學(xué);2011年

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7 吳時(shí)飛;泵—馬達(dá)功率回饋式試驗(yàn)臺(tái)液壓及測(cè)控系統(tǒng)研究[D];中南大學(xué);2006年

8 何國(guó)華;減振器試驗(yàn)臺(tái)液壓及測(cè)控系統(tǒng)研究[D];中南大學(xué);2006年

9 李存兵;基于虛擬儀器的靜壓傳動(dòng)遠(yuǎn)程監(jiān)測(cè)系統(tǒng)研究[D];浙江工業(yè)大學(xué);2008年

10 龔樹強(qiáng);基于CAN總線的電液伺服閥靜態(tài)性能測(cè)試系統(tǒng)的研究[D];哈爾濱工業(yè)大學(xué);2007年

本文編號(hào)：2146171