基于虚拟仪器的电机学实验系统.pdfVIP

基于虚拟仪器的电机学实验系统 徐迅,雷勇 （四川大学电气信息学院，四川 成都 610065 E-mail: alex.xun.xu@） 摘要：“电机学”是电力类专业的一门重要专业基础课，电机学实验是学习和 研究电机理论的重要实践环节。该文将虚拟仪器与数字信号处理等技术与电机学实 验相结合，提出了基于虚拟仪器的电机学实验系统的实现方案，并以三相变压器平 台为例加以实现。系统通过电压、电流互感器将高电压、大电流转换成0~5V跟踪 电压信号，经过抗混叠滤波、采样、AD转换后送入PC ，在PC端采用NI LabVIEW8.5 处理并显示，实现了电机学实验的自动化和智能化，为高校电机学教学实验的改进 提供了新的思路。 关键词：虚拟仪器；电机学；电机学实验；互感器； 中图分类号：TP399 Electromechanical Experiment System based on Virtual Instrument Xu Xun, Lei Yong alex.xun.xu@ (School of Electrical Engineering, Sichuan University, Sichuan Chengdu610065) ABSTRACT: Electrical Machinery is one of the important Special basis courses for students majoring in Electric . Electromechanical Experiment is the critical practical part of stu dying Electrical Machinery. This paper proposed a method to build an Electromechanical Experiment System based on Virtual Instrument by combining Virtual Instrument techniques and Digital Signal Processing techniques which is later realized and tested on Three-Phase Transformer. High voltage and heavy current are transformed into 0~5V tracking voltage signals by transformer in this system. These signals are then filtered, sampled, AD converted and sent to PC in which Digital signals are processed and displa yed by NI LabVIEW 8.5. This System automates and intelligentize s Electromechanical Experiment procedure providing a new method for college Electromechanical Experiment improvement Keywords ： Virtual Instrument ; Electrical Machinery ; Electromechanical Experiment ; Transformer; “电机学”是电力类专业的一门重要专业基 列是目前业界使用最为广泛，性能最为强大的图 础课，具有极强的理论和实践性，电机学实验是 形化编程平台，是虚拟仪