一、前言正如许多资料所指出的,在用数字法分析冲击谱时,模数变换器的量化误差和计算机的舍入误差通常是不重要的。如果我们暂且不管计算冲击谱所选用数值方法本身的误差,那末剩下的就是与采样频率有密切关系的峰值检测误差和频率混淆了。作为冲击谱分析中的主要误差来源,有许多资料对这两个误差进行过讨论,资料[1]中列出了这方面的资料目录。 I. INTRODUCTION As many sources have pointed out, the quantization error of an A / D converter and the rounding error of a computer are usually not important when analyzing the shock spectrum numerically. If we leave aside the error in calculating the numerical method itself for the shock spectrum, then what remains is the peak detection error and frequency that are closely related to the sampling frequency. As the main source of error in the impact spectrum analysis, there are many sources for the discussion of these two errors, and the data [1] lists the information in this area.