Analogical models

Not to be confused with Analogical modeling.
For other uses, see Analogy (disambiguation).
A mechanical network diagram of a simple resonator (top) and one electrical network with an equivalent structure and behaviour (bottom), then, an analog for it.

Analogical models are a method of representing a phenomenon of the world, often called the "target system" by another, more understandable or analysable system. They are also called dynamical analogies.

Two open systems have analog representations (see illustration) if they are black box isomorphic systems.