Abstract
We study the strange nonchaotic attractor of a second-order quasi-periodically forced electronic circuit, which is driven by two sinusoidal voltage sources and consists of a linear inductor, a linear capacitor, a linear resistor and a specifically designed piecewise-linear negative resistor. Both the experimental and the simulation results are provided to show the bifurcation process from two-frequency quasi-periodic attractors to strange nonchaotic attractors, and from strange nonchaotic attractors to strange chaotic attractors. The strange nonchaotic characteristics of the observed attractors are verified by using Fourier amplitude spectra, Poincaré maps and information dimension.
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