Rolling Bearing Fault Diagnosis Based on Adaptive Multiparameter-Adjusting Bistable Stochastic Resonance

Table 2

Optimization results with and different .

Number of optimization		1	2	3	4	5	6	7	8
	Optimal (dB)	−9.047	−9.822	−9.563	−9.512	−9.964	−9.836	−9.539	−9.831
	Iteration time (s)	7.085	6.987	6.886	7.069	7.188	6.995	7.195	6.938
	Optimal (dB)	−9.188	−9.562	−9.649	−9.636	−9.478	−9.747	−9.111	−9.389
	Iteration time (s)	13.304	13.272	13.071	13.476	13.031	13.336	13.187	13.257
	Optimal (dB)	−9.747	−9.422	−9.672	−9.404	−9.216	−9.573	−9.637	−9.251
	Iteration time (s)	19.320	19.315	19.056	19.168	19.189	18.953	19.148	18.837