Emerging multi‐double‐scroll attractor from variable‐boostable chaotic system excited by multi‐level pulse

This study reports a simple approach to emerging multi‐double‐scroll attractor from a variable‐boostable chaotic system via multi‐level pulse excitation, which is achieved by replacing a constant controller with a multi‐level pulse function. To intuitively show the simple and feasible approach, a four‐double‐scroll chaotic attractor coined in such a system with four‐level pulse excitation is taken as a paradigm.