1. National Key Laboratory of Science and Technology on Metrology & Calibration, Changcheng Institute of Metrology and Measurement, Beijing 100095, China
2. National Institute of Metrology, Beijing 100029, China
Abstract：Aiming at the problems in accurate measurement of settling time of sinusoidal generator in state changing, switch on, and overloading recovery, a method based on local area four-parameter sine wave curve-fitting is presented. Then, the four fitting parameters are used to the whole area of sampling wave, and the residual error wave between the fitting curve and the sampling wave is gotten. It takes the convergence courses of residual error in settling of sinusoidal. By using this residual error curve, and the condition criterion of the settling time of ourselves, both the beginning time point and the stopping time point are got, finally, the settling time of sinusoidal is calculated. In experiments of two different conditions, both the validity and the feasibility of the measurement method are proved. The method can also be used in settling time measurement of all of the pulse frequency modulation, pulse amplitude modulation, pulse phase modulation, and other digital modulation signal generators.
梁志国,何昭,刘渊,张亦弛,吴娅辉. 捷变正弦信号源波形建立时间的精确测量[J]. 计量学报, 2020, 41(9): 1115-1121.
LIANG Zhi-guo,HE Zhao,LIU Yuan,ZHANG Yi-chi,WU Ya-hui. The Precise Measurement Method for Settling Time of Hopping Sine Wave Based on Four-parameter Sinusoidal Curve-fit. Acta Metrologica Sinica, 2020, 41(9): 1115-1121.
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2020, Vol. 41 
