Jianbin Ding

The two parameter bifurcation diagram.

Hello hilmeijer, First of all, thank you very much for your reply. Next, I will describe the calculation of the bifurcation in detail. 1. Equilibrium point calculation. Input model, as shown in figure. The model is highly nonlinear, especially the expression of Mkdelta, which is itself a piecewise function, and here I use the tanh function to conduct smooth approximation to it. Model derivative is set to "SNNNN". Then select type-> Initial point->point, and input the Initial values as: t=0, y1=0.02,...

Hello hilmeijer, First of all, thank you very much for your reply. Next, I will describe the calculation of the bifurcation in detail. 1. Equilibrium point calculation. Input model, as shown in figure. The model is highly nonlinear, especially the expression of Mkdelta, which is itself a piecewise function, and here I use the tanh function to conduct smooth approximation to it. Model derivative is set to "SNNNN". Then select type-> Initial point->point, and input the Initial values as: t=0, y1=0.02,...

Hi, When I calculate the Hopf bifurcation curve, I start from a Hopf bifurcation point and detect the HH (double Hopf) and GH (Generalized Hopf) bifurcation points. But at HH: (P11 * P22,theta,delta)=(1, 4.398365e-01, 9.033867E +00), (THETA,DELTA)=(NaN, NaN), and at GH: L2 =NaN. When I try to do the LPC calculation from the GH point, I am prompted that the input matrix cannot contain NaN. So I would like to ask: in this case, what parameters can I modify to avoid this problem? By the way, when I...