Title :
Aging drift compensation
Author :
Zhao, Mingying ; Zhou, Wei ; Zhang, Weiwei ; Dou, Mingming
Author_Institution :
Sch. of Mechano-Electron. Eng., Xidian Univ., Xi´´an, China
Abstract :
Based on the deep analysis of the data which were obtained from more than 300 crystal oscillators working during 100 to 800 days, a predictive model is established in the paper. With nonlinear generalized least squares, the parameters estimation and the aging drift curve fitting of the model are given based on the data of the first 30 days. And the model is verified by the rest data. According to the fitting curve of aging drift obtained by the experiments, the aging drift compensation of the crystal oscillators is implemented. Experiment results show that the performance of the crystal oscillators with aging drift compensation is improved about one order.
Keywords :
ageing; compensation; crystal oscillators; curve fitting; data analysis; least squares approximations; parameter estimation; aging drift compensation; aging drift curve fitting; crystal oscillator compensation; data analysis; nonlinear generalized least squares; parameter estimation; predictive model; time 100 day to 800 day; time 30 day; Aging; Crystals; Data models; Fitting; Mathematical model; Oscillators; Predictive models;
Conference_Titel :
Frequency Control Symposium (FCS), 2012 IEEE International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1821-2
DOI :
10.1109/FCS.2012.6243655
