Coupled Duffig Walk with external linear pumping in 2D

$\{\begin{array}{c}\frac{d{x}_i}{dt}=\mathrm{\Delta }{x}_i\\ \frac{d{y}_i}{dt}+K{x}_i^3+\mathrm{(\Delta -p(t))}{x}_i=\sum _{\mathrm{i\ne j}}^N{J}_{\mathrm{ij}}{x}_i{x}_j\end{array}$

$$ p(t)= pump0 for i≤tp and p(t)=eps×t where t(i+1)=t(i)+deltat for i>tp

Time interval: deltat =

Threshold of bifucation: delta =

Non Linearity: K =

Coupling Constant: J =

Initial pumping: pump0 =

Starting point of linear increment: tp =

Slope of pumping: eps =