基于LabVIEW的水泵性能测试系统的研究

发布时间：2018-07-10 02:01

本文选题：水泵 + 测试系统　；参考：《中南林业科技大学》2012年硕士论文

【摘要】：水泵作为重要的流体机械,被广泛地应用于工农业生产和人们生活的各个部门和领域,在生产生活中占有重要地位,在国民经济各个行业中得到广泛应用。现阶段,水泵设计主要是采用半经验半理论相结合方式,因而水泵测试技术对于研究和发展水泵的基础理论、改进水泵的性能、完善水泵的设计方法等都有着极其重要的作用。目前,国内的水泵测试系统大部分仍是传统的半自动化形式,其测量部位相对分散,整体测量信号没能综合管理,而且操作界面不够人性化,与国外相比,技术水平相对落后。本文正是基于这种情况,将水泵测试原理和方法作为研究对象,在NI的LabVIEW2010平台上,根据测试系统具体的要求,将传感器技术、微机技术、数据采集处理技术融入虚拟仪器技术中,构建了基于虚拟仪器技术的水泵测试平台,开发出一个完整的水泵测试系统。此系统能够实现水泵各项参数的测试、性能试验、汽蚀试验、数据保存、曲线拟合、生成报表等功能。此测试系统整体上采用了模块化设计。根据测试原理和试验类型将各个功能编写为相互独立的子程序模块,便于修改和系统功能扩展及升级。测试系统程序首次编写完成后,先利用LabVIEW仿真模块进行软件模拟仿真,再不断修改和完善程序。然后在实验室进行实测,验证测试系统的可行性,通过误差分析,测试系统已经达到B级精度。并与由中国农业机械化科技研究院开发的PSM水泵自动测试系统的数据处理结果和结论进行对比。试验对比发现基于LabVIEW的水泵测试系统与PSM水泵自动测试的测试结果、性能拟合曲线、汽蚀试验拟合曲线一致,而且在此基础上增加了网络模块功能,可实现界面远程操作,同时具有系统结构更紧凑、操作灵活方便、界面友好、容易维护、造价低等诸多优点。硬件配置中采用了NI的PCI1643数据采集卡,直接连接微机,保证系统运行速度快、效率高,而且提高了水泵测试系统的精度和自动化程度。本测试系统是利用虚拟仪器技术结合模块化设计思路开发的,具有很强的通用性和扩展性,还可增加流量调节自动控制、多种类型泵的测试、泵运行故障诊断、泵状态监测报警等多种功能模块,使整个系统功能更强大、自动化程度更高。
[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.
【学位授予单位】：中南林业科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP274;TH318

【参考文献】