通过LabVIEW 虚拟仪器技术研究随机误差的正态分布

doi:10.16854/j.cnki.1000-0712.230264

College Physics ›› 2024, Vol. 43 ›› Issue (7): 37-.doi: 10.16854/j.cnki.1000-0712.230264

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Investigation of the normal distribution of random errors by labVIEW virtual instrument technique

ZHAO Xiao-hong, WANG Shi-hong

School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2023-07-17 Revised:2023-10-27 Online:2024-08-15 Published:2024-09-19

Abstract

Abstract: In this paper, the virtual instrument technology LabVIEW as a software platform, combined with NI-USB6009 data acquisition card is used to measure DC voltage and both the amplitude and the frequency of sine wave of the signal generator. The statistical result of the measurement shows the normal distribution. For the periodic signal, increasing of sampling quantity per period can reduce the standard deviation of the frequency, and can cause improving the accuracy of frequency measurement. This experiment can be designed for students to study the normal distribution law of random error through practical measurement.

Key words: normal distribution, virtual instrument, LabVIEW development platform, data processing

ZHAO Xiao-hong, WANG Shi-hong. Investigation of the normal distribution of random errors by labVIEW virtual instrument technique[J].College Physics, 2024, 43(7): 37-.

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Investigation of the normal distribution of random errors by labVIEW virtual instrument technique

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