| 基于ARM与CPLD的可驯频率基准的设计与实现 |
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| 引用本文： | 杨剑青,杨晓琴,谢亮,芦旭,樊战友.基于ARM与CPLD的可驯频率基准的设计与实现[J].电子测量技术,2014(2):75-77. |
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| 作者姓名： | 杨剑青 杨晓琴 谢亮 芦旭 樊战友 |
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| 作者单位： | [1]国家授时中心,西安710600 [2]中国科学院精密导航定位与定时技术重点实验室,西安710600 [3]中国科学院研究生院,北京100039 [4]西北农林科技大学,杨凌712100 |
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| 摘 要： | 介绍了一种基于ARM与CPLD的可驯频率基准的软硬件设计方法,在ARM的控制下采用数字PID控制算法产生晶振控制电压,根据所测量的频率值与标称的频率值之间的差值大小来调整对应电压控制字的步进幅度,进而达到快速对本地晶振驯服的目的,从实验结果来看,驯服后的晶振准确度较无驯服前提高约一个数量级,满足设计要求。
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| 关 键 词： | 可驯频率基准 准确度 ARM CPLD PID |
Design and realization of disciplined frequency reference based on ARM and CPLD |
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| Yang JianqingNational Time Service Center,Xi＇an,China ;Key Laboratory for Precision Navigation and Timing Technology,Chinese Academy of Sciences,Xi＇an,China;Graduate Uiversity of the Chinese Academy of Sciences,Beijing,China Yang XiaoqinNorthwest A＆F University,Yangling,China Xie LiangNational Time Service Center,Xi＇an,China Lu XuNational Time Service Center,Xi＇an,China Fan Zhanyou.Design and realization of disciplined frequency reference based on ARM and CPLD[J].Electronic Measurement Technology,2014(2):75-77. |
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| Authors: | Yang JianqingNational Time Service Center Xi＇an China ;Key Laboratory for Precision Navigation and Timing Technology Chinese Academy of Sciences Xi＇an China;Graduate Uiversity of the Chinese Academy of Sciences Beijing China Yang XiaoqinNorthwest A＆F University Yangling China Xie LiangNational Time Service Center Xi＇an China Lu XuNational Time Service Center Xi＇an China Fan Zhanyou |
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| Affiliation: | Yang Jianqing(National Time Service Center, Xi＇an 710600, China ;Key Laboratory for Precision Navigation and Timing Technology, Chinese Academy of Sciences,Xi＇an 710600,China;Graduate Uiversity of the Chinese Academy of Sciences, Beijing 100039, China) Yang Xiaoqin(Northwest A＆F University, Yangling 712100, China) Xie Liang(National Time Service Center, Xi＇an 710600, China) Lu Xu(National Time Service Center, Xi＇an 710600, China) Fan Zhanyou(National Time Service Center, Xi＇an 710600, China) |
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| Abstract: | This paper represents a hardware and software design method of tamable frequency standard on the basis of ARM and CPLD platform.Under the control of ARM and by using the digital PID control algorithm,crystal vibration control voltage is produced,and then the size of step of corresponding voltage control bit is adjusted according to the frequency difference between the measurements and the nominal value,which aims at achieving fast tamable local crystal oscillator.The experiment results show that the accuracy of the frequency reference is improved by one order of magnitude after the crystal oscillator is being tamed,which meets the design requirements. |
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| Keywords: | disciplined frequency reference accuracy ARM CPLD PID |
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