本文選題：水泵 + 測試系統(tǒng)��； 參考：《中南林業(yè)科技大學》2012年碩士論文

【摘要】：水泵作為重要的流體機械,被廣泛地應用于工農業(yè)生產和人們生活的各個部門和領域,在生產生活中占有重要地位,在國民經濟各個行業(yè)中得到廣泛應用�，F(xiàn)階段,水泵設計主要是采用半經驗半理論相結合方式,因而水泵測試技術對于研究和發(fā)展水泵的基礎理論、改進水泵的性能、完善水泵的設計方法等都有著極其重要的作用。目前,國內的水泵測試系統(tǒng)大部分仍是傳統(tǒng)的半自動化形式,其測量部位相對分散,整體測量信號沒能綜合管理,而且操作界面不夠人性化,與國外相比,技術水平相對落后。 本文正是基于這種情況,將水泵測試原理和方法作為研究對象,在NI的LabVIEW2010平臺上,根據(jù)測試系統(tǒng)具體的要求,將傳感器技術、微機技術、數(shù)據(jù)采集處理技術融入虛擬儀器技術中,構建了基于虛擬儀器技術的水泵測試平臺,開發(fā)出一個完整的水泵測試系統(tǒng)。此系統(tǒng)能夠實現(xiàn)水泵各項參數(shù)的測試、性能試驗、汽蝕試驗、數(shù)據(jù)保存、曲線擬合、生成報表等功能。 此測試系統(tǒng)整體上采用了模塊化設計。根據(jù)測試原理和試驗類型將各個功能編寫為相互獨立的子程序模塊,便于修改和系統(tǒng)功能擴展及升級。測試系統(tǒng)程序首次編寫完成后,先利用LabVIEW仿真模塊進行軟件模擬仿真,再不斷修改和完善程序。然后在實驗室進行實測,驗證測試系統(tǒng)的可行性,通過誤差分析,測試系統(tǒng)已經達到B級精度。并與由中國農業(yè)機械化科技研究院開發(fā)的PSM水泵自動測試系統(tǒng)的數(shù)據(jù)處理結果和結論進行對比。試驗對比發(fā)現(xiàn)基于LabVIEW的水泵測試系統(tǒng)與PSM水泵自動測試的測試結果、性能擬合曲線、汽蝕試驗擬合曲線一致,而且在此基礎上增加了網絡模塊功能,可實現(xiàn)界面遠程操作,同時具有系統(tǒng)結構更緊湊、操作靈活方便、界面友好、容易維護、造價低等諸多優(yōu)點。硬件配置中采用了NI的PCI1643數(shù)據(jù)采集卡,直接連接微機,保證系統(tǒng)運行速度快、效率高,而且提高了水泵測試系統(tǒng)的精度和自動化程度。 本測試系統(tǒng)是利用虛擬儀器技術結合模塊化設計思路開發(fā)的,具有很強的通用性和擴展性,還可增加流量調節(jié)自動控制、多種類型泵的測試、泵運行故障診斷、泵狀態(tài)監(jiān)測報警等多種功能模塊,使整個系統(tǒng)功能更強大、自動化程度更高。
[Abstract]:As an important fluid machinery, water pump is widely used in industrial and agricultural production and various sectors and fields of people's life. It occupies an important position in the production and life and is widely used in every industry of the national economy. At the present stage, the design of the pump is mainly used in the combination of semi empirical and semi theory, so the pump testing technology is used. It is very important to study and develop the basic theory of water pump, improve the performance of the pump and improve the design method of the pump. At present, most of the domestic pump testing system is still the traditional semi automatic form, its measurement parts are relatively scattered, the overall measurement signal is not integrated, and the operation interface is not humanized enough. Compared with foreign countries, the technical level is relatively backward.
Based on this situation, this paper takes the principle and method of water pump test as the research object. On the LabVIEW2010 platform of NI, according to the specific requirements of the test system, the sensor technology, microcomputer technology and data acquisition and processing technology are integrated into the virtual instrument technology, and a pump testing platform based on virtual instrument technology is constructed. Complete pump testing system. This system can realize the function of the pump parameters test, performance test, cavitation test, data preservation, curve fitting, and report form.
The test system has been modular design on the whole. According to the test principle and test type, each function is written as independent subprogram module. It is easy to modify and expand and upgrade the function of the system. After the first writing of the test system, the LabVIEW simulation module is used to simulate the software, and then it is constantly modified and perfected. The test system is tested in the laboratory to verify the feasibility of the test system. Through the error analysis, the test system has reached the B level accuracy. The results and conclusions are compared with the data processing results and conclusions of the PSM pump automatic testing system developed by the Chinese Academy of agricultural mechanization and Technology Research Institute. The test system based on LabVIEW is compared to the pump testing system based on the test. It is consistent with the test results of PSM pump automatic test, performance fitting curve and cavitation test fitting curve, and on this basis, the function of network module is added, and the interface remote operation can be realized. At the same time, the system has the advantages of more compact structure, flexible and convenient operation, friendly interface, easy maintenance, low cost and so on. The hardware configuration uses NI The PCI1643 data acquisition card is directly connected to the microcomputer, which ensures that the system runs fast and efficiently, and improves the accuracy and automation of the pump test system.
The test system is developed with virtual instrument technology and modular design. It has strong generality and extensibility, and it can also increase the automatic control of flow regulation, test of various types of pumps, pump operation fault diagnosis, pump state monitoring and alarm and other functional modules, so as to make the whole system more powerful and more automatic.
【學位授予單位】：中南林業(yè)科技大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TP274;TH318

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本文編號：2111593