A simulation experiment platform for the study of the characteristics of sensitive galvanometer was successfully built using LabVlEW, 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, eritical damping and overdamping, respectively.The external eritical resistance was about 300 0.The data processing module has a high degree of visualization, A scatter plot of the experimental data was directly drawn in this platorm, The optimal R, ~ 1/d straight line was automatically displayed through linear fitting ,thereby completing the measurement of the current constant k and the internal resistance R, of the sensitive galvano meter. Multiple simulation results show that the relative error between the measured values of the two important physical parameters ( k ,R,) and the theoretical values is less than 1.0%6'Thus the virtual simulation experiment platform has good accuraey and stability. This platform can make the observation of the details of the experimental process more concrele, which is condtive to deepening the understanding of the experimental principle.
陈 浪 , 张宇飏 , 吕梦雪 , 李楚涵 , 何学敏 .
基于 LabVIEW 的灵敏电流计特性研究仿真实验平台
[J]. 大学物理实验, 2024, 37(6): 116-122.
CHEN Lang , ZHANG Yuyang, LÃ Mengxue, LI Chuhan, HE Xuemin.
A simulation Experiment Platform for the Characterization of Sensitive Galvanometer Based on LabVIEW
. Physical Experiment of College, 2024, 37(6): 116-122.