数据采集系统通道间延时的准确评价

A Nicety Evaluation Method of Sine Wave Phase Difference

针对正弦波拟合过程在实际应用中的缺陷,引入了一种新的方法评价数据采集系统通道间延时,即正弦波拟合收敛算法。讨论了产生通道间延时的原因以及评价过程的误差来源,同时给出了评价过程的计算机仿真与测试结果。仿真与测试结果表明,该方法在数据采集系统通道间延时的评价中,具有很强的准确性和实用性。

Counting on the deficiency of practical application in sine-wave fitting method, a new method, sine-wave convergence curve-fit arithmetic to estimate delays between channels in data acquisition system is introduced. The causation of delays between channels, the source of error in estimation process, computer simulation and testing results about estimation process are also discussed. Simulation and testing results prove that this arithmetic has a high veracity and practicability in estimating delays between channels in data acquisition system.