Dynamic characteristics of the system The above analysis shows that the position of the equilibrium point and its stability are affected by the system under different charging conditions. Obviously, the dynamic characteristics of the system also need to be changed. In the following numerical study, we use the fourth-order Runge-Kutta numerical method to calculate the equation, take the maximum value Hmax of the angular displacement variable, and plot the Hmax-X0 and Hmax-b bifurcation diagrams to describe the dynamic characteristics of the system. In the case where the two balls are not charged (b=0), X0 is used as the adjustment parameter, and other parameters are fixed, respectively, taking k=0.8, C=0.1, R=0.4m, d=0.2m, r0=0.12m, The Hmax-X0 bifurcation diagram is drawn. As the driving angular frequency changes from small to large, the system presents a path from double-cycle bifurcation to chaos. The system is in the range of X0<1.18rad and X0>1.38rad. Cycle status, while at 1.18rad
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