简支梁振动测试与分析系统的设计

Design of Test and Analysis System for Simple Beam

将虚拟仪器技术应用于等强度简支梁固有频率的测量。设计了基于LabVIEW的测试系统,并介绍了测试系统的软件设计和硬件构成。通过理论公式计算与实验结果对比,表明系统具有较高精度,并且系统可以实现振动信号的采样、存储、分析和回放功能,为简支梁的固有频率测试提供了一种快速简便的方法。

Virtual instrument technology was applied to the natural frequency measuring experiment of the equal-strength simple beam, the test system was designed based on LabVIEW. The comparison between the theoretieal and experimental results shows that the system is of high aceuraey. The developed system can provide functions of vibration data sampling, storage, analysis and recall, providing a quick and simple method for measuring the natural frequeney of simple beam.