Reduced Active Components Count Electronically Adjustable Fractional-Order Controllers: Two Design Examples

This paper deals with fractional-order controller implementations, which can be constructed by electronically controlled building blocks fully integrated on a single chip. The proposed DC motor controller structure offers 50% reduction of the active components count, compared to the corresponding already published counterpart. The proposed liquid level of the two-interacting-tank controller scheme is the first one in the literature offering the aforementioned features. Simulation results, based on the 0.35 mu m Austria Mikro Systeme technology process, confirm the correct operation of both proposed controllers.