Hysteresis of electromagnetic relays for PM space density identification

Electronic analogy is proposed for studying coded signal processing tools on a multiscale hysteretic system based on electromagnetic array of relays. Coded voltage excitations in the frequency range of f₀ ∈ [300mHz, 3Hz] using chirp-like short-time signal have been implemented electronically on two digital output interfaces modeled with a N = 64 mesoscopic Preisach-Mayergoyz (PM) space. An inversion algorithm is tested versus the properties of the coded excitation with the objective to extract the optimized excitation for the best PM space density identification. It is shown that the distribution mixture associate to the two interfaces is characterized and identified numerically with a PM space simulating program using a 2-dimensional normal distribution.