基于虚拟仪器的中频发电机试验系统设计

摘要：随着电机的广泛应用，我们对电机质量和性能的要求也越来越严格，因此，对电机测试系统的数据采集技术和处理技术要求也越来越高。传统的指针式仪表无论在测试精度、灵敏度还是测量速度等方面都不能满足生产试验的需要，现在，电子技术和计算机技术的高速发展为电机测试系统的发展提供了良好的条件。计算机技术和仪器仪表技术的结合，产生了虚拟仪器——基于计算机的采集测试和分析技术，仪器逐渐进入虚拟仪器时代。
虚拟仪器实际上是一个按照仪器需求组织的数据采集系统。虚拟仪器的研究中涉及的基础理论主要有计算机数据采集和数字信号处理。目前在这一领域内，使用较为广泛的计算机语言是美国NI公司的LabVIEW。
LabVIEW（Laboratory Virtual instrument Engineering workbench）是一种图形化的编程语言，使用这种语言编程时，基本上不写程序代码，取而代之的是流程图。它尽可能利用了技术人员、科学家、工程师所熟悉的术语、图标和概念，使用它进行原理研究、设计、测试并实现仪器系统时，可以大大提高工作效率。因此它广泛地被工业界、学术界和研究实验室所接受，视为一个标准的数据采集和仪器控制软件。
综上所述，基于虚拟仪器的中频发电机试验系统具有很高的可靠性和准确性，基本符合产品的要求。
关键字：电机试验；虚拟仪器；图形化编程；数据采集；信号处理

The Design of Med-Frequency Generator
Test System Based on Virtual Instrument

ABSTRACT：As the wide use of electrical machinery,we are stricter on the quality and function of electrical machinery.Therefore,we are stricter on the data collecting technology and processing technology too. traditional instruments and apparatuses cann’t satisfy the demand for production and experiment in many fields.at present,the development of the electronic technology and computering technology can offer a good condition for electrical machinery test system. the combination of technology of the computer and technology of instrument and apparatus produces the virtual instrument ——Testing and analysing technology in collection based on computer, the instrument enters the era of virtual instrument gradually.
In fact, according to the instrument’s demand, virtual instrument organize the data collecting system.By the research of virtual instrument,involve in some basic theories,such as data collecting technology and digital signal processing.At present,in the area of virtual instrument,the LabVIEW was invented by american company IN is one of computer language.It was used more extensive.
LabVIEW（Laboratory Virtual instrument Engineering workbench）is a figure programming language.When we use this language to write programs,we needn’t to write program code,the flow chart was replace program code. It can make better use of the terminology, picture identifier and concept that the technical personnels,scientists and engineers are familiar with. It can improve the work efficiency greatly when we are using it to do things such as principle research, design,test and realizing the equipment system.So it is widely accepted by the industrial fields,academic circles and the research labs.It is also considered as a standard software for data collecting and equipment controlling.
In a word, Med-frequency generator test system based on virtual Instrument is valuable and helpful for the development of test measurement system.It have already accorded with the request of the products basically.
Keywords: The electrical machinery testing; Virtual instrument; Figure programming; Data collecting ;Signal processing