Time Aware System Refinement

We propose a formal, time aware refinement of systems. The proposed timewise refinement method is a direct extension of the traditional refinement calculus of Action Systems. The adaptation provides a well-founded mathematical basis for the stepwise refinement of systems modelled with the time spiced Action Systems formalism. In the refinement of an abstract system into a more concrete one a designer must show that conditions of both functional and temporal properties are satisfied.