基于势函数的双稳随机共振参数特性探究

发布时间：2018-07-26 08:22

【摘要】：双稳态随机共振系统模型在微弱信号检测方面具有很好的应用特性,为微弱信号的检测提供了新的思路。如何用更简单的方法突破近似绝热条件的限制,使其应用于高频信号检测,是近些年来的研究热点。分析势函数的形状特征对系统输出信噪比影响的基础上,研究了系统从双稳状态(AAc)到失稳(A≥Ac),再到单稳状态(a=0或b=0)过程中,系统输出特性的变化规律。提出了一种基于势函数的参数调节方法,通过对系统参数加以控制,可以在不影响系统最佳输出信噪比的情况下,将可调参量降为1个,减少参数调节的工作量。经过仿真和实验采集数据验证,该方法简单易行,具有一定的应用价值。
[Abstract]:The bistable stochastic resonance system model has good application characteristics in weak signal detection and provides a new idea for weak signal detection. How to break through the limitation of approximate adiabatic condition and apply it to high frequency signal detection is a hot topic in recent years. Based on the analysis of the effect of the shape characteristics of potential function on the output SNR of the system, the variation of the output characteristics of the system from bistable state (AAc) to unstable state (A 鈮，

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