Practical analog realization of multiple order switching for recursive fractional variable order derivative

In the paper, a novel practical analog modeling of multiple-switching fractional order systems based on recursive fractional variable order integrals, is introduced. Presented circuit, based on domino ladder approximation of half order impedance, allows to multiple-switching between orders 0.5 and 1. Moreover, numerical scheme for solving variable order differential equations is introduced. Experimental results of modeling are also presented and compared with numerical simulations.