【摘要】 设计了基于NI ELVIS平台和LabVIEW虚拟仪器的动态杨氏模量实验系统。该系统在NI ELVIS平台基础上采用虚拟信号发生器和虚拟示波器代替YM-2型信号发生器和传统示波器,有效提高了试样棒共振频率测量的精度,实现了测量信号的实时显示、采集、存储和自动化测量。实践表明,该系统的搭建和测试有助于学生更好地理解和掌握实验,提高实践创新能力。更多还原

【Abstract】 The experimental system of dynamic Young’s modulus is designed based on NI ELVIS platform and LabVIEW virtual instrument. The accuracy of the sample stick’s resonance frequency was improved effectively by replacing the YM-2 signal generator and traditional oscilloscope with virtual signal generator and virtual oscilloscope,and the system realizes the automated measurement in the data acquisition,real time data display and data storage. The practice shows that the experimental system can help students to better understand the experimental principle,and improve their ability of creation and practicality.更多还原