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| 基于频率控制的自适应随机共振系统研究 | |
| 引用本文： | 张 刚,胡 韬,张天骐.基于频率控制的自适应随机共振系统研究[J].振动与冲击,2016,35(2):91-96. |
| 作者姓名： | 张 刚 胡 韬 张天骐 |
| 作者单位： | 1.重庆邮电大学 重庆 400065； 2.信号与信息处理重庆市重点实验室，重庆 400065 |
| 摘 要： | 研究双稳Duffing系统随机共振产生机理，针对不满足绝热近似条件的大参数信号，提出基于频率控制自适应随机共振微弱信号检测系统，实现对未知大频率微弱信号检测。仿真结果表明，该系统能实现大频率信号随机共振，较传统随机共振系统精度及系统输出信噪比均极大提高，并能扩展其在微弱信号检测领域的应用。 |
| 关 键 词： | Duffing系统 频率控制 随机共振 自适应 |
Research on an adaptive stochastic resonance system based on frequency control |
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| ZHANG Gang,HU Tao,ZHANG Tian-qi.Research on an adaptive stochastic resonance system based on frequency control[J].Journal of Vibration and Shock,2016,35(2):91-96. | |
| Authors: | ZHANG Gang HU Tao ZHANG Tian-qi |
| Affiliation: | 1. Chongqing University of Posts and Telecommunications, Chongqing 400065, China； 2. Key Laboratory of Signal and Information Processing of Chongqing, Chongqing 400065, China |
| Abstract: | The stochastic resonance in Bistable Duffing System is studied in this paper. For the large parameter condition which does not meet the adiabatic approximation, a kind of adaptive stochastic resonance weak signal detection system based on frequency control is proposed in this paper. It can detect the unknown high frequency weak signal. The simulation results show that the system can realize high frequency signal stochastic resonance. Compared with the traditional stochastic resonance system, its precision and system output signal-to-noise ratio is greatly improved, and its application in the weak signal detection field is extended.
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| Keywords: | Duffing system frequency control stochastic resonance adaptive |
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