Reuse, Parameterized Reuse, and Hierarchical Reuse of Substructures in Evolving Electrical Circuits Using Genetic Programming

Most practical electrical circuits contain modular substructures that are repeatedly used to create the overall circuit. Genetic programming with automatically defined functions and architecture-altering operations successfully evolved a design for a two-band crossover (woofer and tweeter) filter with a crossover frequency of 2,512 Hz. Both the topology and the sizing (numerical values) for each component of a the circuit were evolved. In the evolved circuit, three different electrical substructures were used; one was invoked five times; and one was invoked as part of a hierarchy; and one substructure was invoked with different numerical arguments so that different numerical component values were assigned to the substructure's components.