Detection of symmetry of attractors from observations II: an experiment with S 4 symmetry

Abstract In part I of this paper we adapt the detectives of Barany et al. (1993) for symmetries of attractors of symmetric dynamical systems to apply to experiments. As an illustration of this theory we consider the dynamics of a system of four forced coupled electronic oscillators with full permutation symmetry (S 4 ). On varying parameters in the circuit we obtain attractors with many different symmetry types and detect these using the methods described in part I.