Numeral simulation of stochastic resonance

In this paper,we present the numerical method to solve the bistable stochastic resonance model based on Runge-Kutta algorithm.With the stochastic resonance characteristic which this function represents,we can detect weak signal from the bigger noise.Computer simulation is accomplished intuitively by the powerful function of Simulink software.It is more intuitively to change system and signal parameters when the method is applied to detect weak signal in a strong noise background.Then a more useful simulative system is offered to extract weak malfunction characteristic signal.