冲击测试中峰值拟合方式的比较与仿真

Comparison and simulation of matching methods in shocking peak value test

冲击信号的准确测量研究有着非常重要的意义,而峰值就是冲击测量中最为重要的参数。众所周知,在测量的数模转换过程中,必然伴随有一部分信号损失,尤其是峰值损失较大。因此,有必要选择合适的拟合方式来提高冲击测量的精度。采用LabWindows/CVI对冲击测试中多种峰值拟合的方式进行了比较与分析,提出了若干建议,并通过仿真予以验证。

In the modern technique and industry, there are many complicated shock phenomena. It is significant to measure the shock signal accurately,and peak value is the most important parameter in shock test. In A/D conversion, a part of shock signal especially peak value would be lost. So it is necessary to select a suitable matching method to improve the accuracy of shock test. The authors have compared and analyzed different peak value matching by using LabWindows/CVI, and given some beneficial advices,which was examined by simulation.