Fig. 4
The response amplitude Q varies with the amplitude B. The inset shows the phase diagram of \({U_2} - {U_1},\) from bottom to top, \(B = 3.25 \,\textrm{V},\) \(3.375 \,\textrm{V}.\) Other parameters: \(A = 0.7 \,\textrm{V},\) \({\omega _{\textrm{L}}} = 50.0 \,\textrm{Hz},\) \({\varOmega _{\textrm{H}}} = 2000.0 \,\textrm{Hz}.\) The experiment results are obtained by the system’s output \({U_1}(t)\) of Fig. 1a, and the numerical results are obtained by the numerical simulations based on Eqs. (1)–(3).
