国防科技大学学报2018，Vol.40Issue(1)：74-77,4.DOI:10.11887/j.cn.201801011
随机振动中晶体振荡器的有源降噪设计
Design of active noise control method for crystal oscillator under random vibration
摘要
Abstract
Crystal oscillator output frequency often drifts under vibration.Therefore, based on the analysis of the acoustic active noise control technology and the mechanism of acceleration effect on crystal oscillator phase noise, a method of reducing crystal oscillator phase noise under vibration was proposed.The simulation about the acoustic active noise control system obtained that the theory of acoustic noise reduction can be used in crystal oscillator phase noise reduction.By adding acceleration sensor, analog-to-digital converter, digital-to-analog converter and digital processor in the peripheral circuit of crystal oscillator, the phase noise real time compensation active noise control system was constructed.The results show that the active noise control system achieves 20 dB phase noise compensation under the random vibration of 0.03g/Hz amplitude range and 10~850 Hz frequency range.关键词
有源降噪/晶体振荡器/相位噪声补偿Key words
active noise control/crystal oscillator/phase noise compensation分类
信息技术与安全科学引用本文复制引用
邓联文,尹芊奕,胡照文,李璨,胡俊琪,单庆晓..随机振动中晶体振荡器的有源降噪设计[J].国防科技大学学报,2018,40(1):74-77,4.基金项目
国家自然科学基金资助项目(61136005,11373075) （61136005,11373075）
湖南省科技计划资助项目(2015JC3041) （2015JC3041）
