To model system architecture in the Simulink® environment, consider using System Composer software.
System Composer enables the definition, analysis, and specification of architectures and compositions for model-based systems engineering and software design. With System Composer, you allocate requirements while refining an architecture model that can then be designed and simulated in Simulink.
Compose and Analyze a System (System Composer)
Define an architecture, view component dependencies, and perform analyses.
Use Stereotypes and Profiles (System Composer)
Import profiles, apply stereotypes to model elements, and extend existing stereotypes.
Analyze Architecture (System Composer)
Analysis is a method for quantitatively evaluating an architecture for certain characteristics.