| 随机振动中晶体振荡器的有源降噪设计 |
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| 引用本文： | 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. |
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| 作者姓名： | 邓联文 尹芊奕 胡照文 李璨 胡俊琪 单庆晓 |
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| 作者单位： | 中南大学 物理与电子学院 超微结构与超快过程湖南省重点实验室,中南大学 物理与电子学院 超微结构与超快过程湖南省重点实验室,中南大学 物理与电子学院 超微结构与超快过程湖南省重点实验室,中南大学 物理与电子学院 超微结构与超快过程湖南省重点实验室,长沙学院 电子与通信工程系,中南大学 物理与电子学院 超微结构与超快过程湖南省重点实验室 |
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| 基金项目： | 国家自然科学基金(61136005)(11373075),湖南省科技计划(2015JC3041)资助项目 |
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| 摘 要： | 针对晶体振荡器在振动下会发生输出频率漂移的问题,在分析声学有源降噪技术和加速度对晶体振荡器输出相位噪声的影响机理基础上,提出降低随机振动中晶体振荡器噪声的方法。在晶体振荡器外围电路中嵌入加速度传感器、模数转换器、数模转换器和数字处理器,构建对晶体振荡器相位噪声进行实时补偿的有源降噪系统。结果表明:设计的有源降噪系统在0.03g/Hz振动幅度、10~850 Hz频率范围的随机振动条件下,能达到20 d B的相位噪声补偿效果。
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| 关 键 词： | 有源降噪 晶体振荡器 相位噪声补偿 |
| 收稿时间： | 2016/11/14 0:00:00 |
| 修稿时间： | 2017/5/2 0:00:00 |
Design of active noise control method for the crystal oscillator under random vibration |
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| DENG Lianwen,YIN Qianyi,HU Zhaowen,LI Can,HU Junqi and SHAN Qingxiao.Design of active noise control method for the crystal oscillator under random vibration[J].Journal of National University of Defense Technology,2018,40(1):74-77. |
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| Authors: | DENG Lianwen YIN Qianyi HU Zhaowen LI Can HU Junqi and SHAN Qingxiao |
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| Institution: | 1. School of Physics and Electronics, Central South University, Changsha 410083, China,1. School of Physics and Electronics, Central South University, Changsha 410083, China,1. School of Physics and Electronics, Central South University, Changsha 410083, China,1. School of Physics and Electronics, Central South University, Changsha 410083, China,1. School of Physics and Electronics, Central South University, Changsha 410083, China and 2. Department of Electronic and Communication Engineering, Changsha University, Changsha 410022, China |
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| Abstract: | 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 had been proposed. The simulation about the acoustic active noise control system obtained that the theory of acoustic noise reduction could be used in crystal oscillator phase noise reduction. By adding acceleration sensor, ADC, DAC and digital processor in the peripheral circuit of constant temperature crystal oscillator, the phase noise real time compensation active noise control system had been constructed. The experimental results showed that the active noise control system could maximumly reduce 20dB effect of crystal oscillator phase noise degradation under random vibration. |
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| Keywords: | Active noise control crystal oscillator phase noise compensation |
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