摘要
数据采集系统的采样周期是有下限的，即其采集速率不可能无限高，这在实际应用中常常限制了其瞬态响应特性的获得。本文介绍了一种方法，通过对其加载特定的周期性输入信号，利用采样周期的整数倍和信号周期的整数倍间的微小偏差，获得比实际采样周期小得多的等效采样周期，从而解决了数据采集系统瞬态响应特性的获取问题。
It is well known that the sampling period of some Data Acquisition Systems(DAS), if not short enough, may limit the evaluation of their transient performance. In this paper, a new method for the evaluation of the transient performance of such DAS is proposed by utilizing the sampling data and shorter equivalent sampling period, which is derived from input signal period and sampling period.
出处
《计量学报》
CSCD
北大核心
1999年第2期156-160,共5页
Acta Metrologica Sinica
关键词
数据采集
系统
采样周期
动态特性
周期倍差
Data acquisition
Sampling period
Equivalent sampling period
Transient performance
Evaluation
