基于LabVIEW的灵敏电流计特性研究仿真实验平台
A simulation Experiment Platform for the Characterization of Sensitive Galvanometer Based on LabVIEW
陈浪 1张宇飏 1吕梦雪 2李楚涵 1何学敏1
作者信息
- 1. 南京邮电大学 理学院,南京 210023
- 2. 南京邮电大学 材料科学与工程学院,南京 210023
- 折叠
摘要
用LabVIEW成功搭建《灵敏电流计特性研究》仿真实验平台.在不同外电阻Re 下直观呈现了电流计光标回零的移动距离d,波形图表实时显示了欠阻尼、临界阻尼和过阻尼三种运动曲线,得出外临界电阻值约 300 Ω.数据处理模块可视化程度高,直接绘制出实验数据的散点图,并通过线性拟合自动展现最佳Re～1/d直线,进而完成电流计电流常数k和内阻Rg 的测定.多次仿真结果表明,两个重要物理参量的测量值与理论值之间的相对误差均低于 1.0%,仿真实验具有较高的精确度和稳定性.该平台可使对实验过程细节的观察更加具象化,有利于加深对实验原理的理解.
Abstract
A simulation experiment platform for the study of the characteristics of sensitive galvanometer was successfully built using LabVIEW.The distance d of the galvanomete's cursor back to zero was visually observed under different external resistances Re,and the waveform chart showed three motion curves corresponding to underdamping,critical damping and overdamping,respectively.The external critical resistance was about 300 Ω.The data processing module has a high degree of visualization.A scatter plot of the experimental data was directly drawn in this platform.The optimal Re～1/d straight line was automatically displayed through linear fitting,thereby completing the measurement of the current constant k and the internal resistance Rg of the sensitive galvanometer.Multiple simulation results show that the relative error between the measured values of the two important physical parameters(k,Rg)and the theoretical values is less than 1.0%.Thus the virtual simulation experiment platform has good accuracy and stability.This platform can make the observation of the details of the experimental process more concrete,which is conducive to deepening the understanding of the experimental principle.
关键词
灵敏电流计/阻尼/临界电阻/电流常数/虚拟仿真Key words
sensitive galvanometer/damping/critical resistance/current constant/virtual simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据