A Compact Piecewise-Linear Circuit Unit for Efficient Multi-Wing Attractor Generation

This work presents a novel compact analog circuit unit for implementing piecewise-linear functions. With an integrated ICs-based modular expandable architecture, the circuit unit allows flexible configuration of breakpoints in the piecewise-linear function with external voltages, thereby achieving high precision and scalability. Since dynamics editing can be conveniently applied to reconstruct attractors, this unit is particularly useful for constructing multi-wing attractors. Using the editing function, multi-dimensional multi-wing attractors of the diffusionless Lorenz system are reconstructed and realized. Experiments demonstrate the efficiency of cell attractor selection and multi-wing organization. By adjusting the threshold voltages of the module, any number of multi-wing attractors in different dimensions can be obtained. This circuit unit can be readily applied to the construction of multi-wing/multi-scroll attractors, offering a valuable analog circuit schematic for chaotic signal generation and chaos-based secure communication.