基于LabVIEW和Multisim的自动控制实验设计

Design of Automatic Control Experiment Based on LabVIEW and Multisim

针对传统的“自动控制理论”课程的实验教学存在硬件设备老化、实验手段滞后等问题,为进一步改进大学自动控制实验效果,本文采用LabVIEW软件,开发了能够读取Multisim设计的控制系统电路图、显示电路的时间响应仿真波形,并对系统时域性能指标进行自动提取的一个交互分析系统。同时,以串联超前校正实验为例,说明了实验系统的便捷性、实用性。仿真与实验结果表明,本实验系统可以方便、直观地模拟真实实验,有助于巩固和完善自动控制理论教学内容,提高教学效率、改善实验效果、降低实验费用。该设计有利于更好地培养学生的自主性和创新性。

Aiming at the problems of hardware aging and lagging experimental means in the traditional experimental teaching of"automatic control theory",in order to further improve the effect of automatic control experiment in University,an interactive analysis system is developed with LabVIEW,which can read the circuit diagram of control system designed by Multisim,display the time response simulation waveform of the circuit,and automatically extract the time-domain performance parameters of the system.Taking the series lead compensation experiment as an example,the convenience and practicability of the experimental system are illustrated.The simulation and experimental results show that the experimental system can easily and intuitively simulate the real experiment,help to consolidate and perfect the teaching content of automatic control theory,improve the teaching efficiency,improve the experimental effect,reduce the experimental cost,and better cultivate the students′autonomy and innovation.