For the response of a bistable system to a large frequency signal, the mechanism of large frequency resonance with parameter-adjusted bistable system is investigated in this work. Our research shows that the method of re-scaling frequency used in stochastic resonance does not change the bistable system structure to realize resonance at the small frequency corresponding to the large frequency, and that the method of tuning bistable system parameters can directly produce resonance at the large frequency through adjusting the system parameters to change the system structure.

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