| 基于混沌的频率测量仿真 |
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| 引用本文： | 于晓洋, 张健, 吕宁, 李龙锁, 陈德运,. 基于混沌的频率测量仿真[J]. 电子器件, 2006, 29(2): 394-396 |
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| 作者姓名： | 于晓洋 张健 吕宁 李龙锁 陈德运 |
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| 作者单位： | 哈尔滨理工大学,测控技术与通信工程学院,哈尔滨,150040;哈尔滨理工大学,计算机科学与技术学院,哈尔滨,150040 |
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| 摘 要： | Duffing方程具有参数敏感性和初值敏感性，通过调节Duffing方程的参数和初值可以产生混沌现象，且被测信号和理想信号如果共同作用在Duffing方程上，可以产生有规律间歇混沌现象，利用这种现象就可以实现周期信号的频率测量。Duffillg方程还具有对噪声的免疫力以及对频差较大的周期信号的免疫力等特点。通过仿真实验，结果表明利用混沌理论实现频率测量的可行性，测量误差被控制在0．006Hz以内，并且系统具有非常高的抗干扰性，信噪比可达-19dB。
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| 关 键 词： | 混沌 Duffing方程 频率 仿真 |
| 文章编号： | 1005-9490（2006）02-0394-03 |
| 收稿时间： | 2005-07-11 |
| 修稿时间： | 2005-07-11 |
Simulation of Frequency Measurement Based on Chaos |
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| YU Xiao-yang,ZHANG Jian,LU Ning,LI Long-suo,CHEN De-yun. Simulation of Frequency Measurement Based on Chaos[J]. Journal of Electron Devices, 2006, 29(2): 394-396 |
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| Authors: | YU Xiao-yang ZHANG Jian LU Ning LI Long-suo CHEN De-yun |
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| Affiliation: | 1. College of Measurement Control Technology and Communication Engineering, Haerbin University of Science and Technology, Haerbin 150080,China; 2. College of Computer Science and Technology, Haerbin University of Science and Technology, Haerbin 150080, China |
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| Abstract: | Duffing equation has parameter and initial value sensitivity. It can generate chaotic state by adjusting the parameter and initial value, and it also can generate intermissive chaotic state, if the ideal signal and the measured signal applied to the system simultaneously. The actual measured signal can be measured by using this state. Duffing equation has character of immunity to noise and periodic signal with different frequency. Through theoretical analysis and simulation, the system can measure the frequency by using the theory of chaos, and the measurement error is controlled under 0. 006 Hz, and it have a strong noiseproof feature which the SNR is-19 dB. |
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| Keywords: | chaos Dulling equation frequency simulation |
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