Non-smooth bifurcations in a double-scroll circuit with periodic excitation

• Published in: Chinese physics B Vol. 20; no. 1; pp. 186 - 193
• Main Author: 张银 毕勤胜
• Format: Journal Article
• Language: English
• Published: IOP Publishing 2011
• Subjects: 准周期振荡; 固有频率; 数值模拟; 激励电路; 激励频率; 非光滑边界
• ISSN: 1674-1056; 2058-3834
• DOI: 10.1088/1674-1056/20/1/010504

The fast-slow effect can be observed in a typical non-smooth electric circuit with order gap between the natural frequency and the excitation frequency. Numerical simulations are employed to show complicated behaviours, especially different types of busting phenomena. The bifurcation mechanism for the bursting solutions is analysed by assuming the forms of the solutions and introducing the generalized Jacobian matrix at the non-smooth boundaries, which can also be used to account for the evolution of the complicated structures of the phase portraits with the variation of the parameter. Period-adding bifurcation has been explored through the computation of the eigenvalues related to the solutions. At the non-smooth boundaries the so-called ＇single crossing bifurcation＇ can occur, corresponding to the case where the eigenvalues jump only once across the imaginary axis, which leads the periodic burster to have a quasi-periodic oscillation.