期刊
SENSORS
卷 15, 期 9, 页码 21327-21349出版社
MDPI
DOI: 10.3390/s150921327
关键词
Duffing oscillator; stochastic resonance; Kramers rate; generalized parameter-adjustment; weak-signal detection
资金
- National Natural Science Foundation of China [51275336]
- Tianjin Research Program of Application Foundation and Advanced Technology [15JCZDJC32200]
A two-dimensional Duffing oscillator which can produce stochastic resonance (SR) is studied in this paper. We introduce its SR mechanism and present a generalized parameter-adjusted SR (GPASR) model of this oscillator for the necessity of parameter adjustments. The Kramers rate is chosen as the theoretical basis to establish a judgmental function for judging the occurrence of SR in this model; and to analyze and summarize the parameter-adjusted rules under unmatched signal amplitude, frequency, and/or noise-intensity. Furthermore, we propose the weak-signal detection approach based on this GPASR model. Finally, we employ two practical examples to demonstrate the feasibility of the proposed approach in practical engineering application.
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