A TMBR-based, Semiformal Method for Early Requirements Definition of Training Simulators

Abstract

This paper introduces a semiformal methodology for defining requirements early for training simulators, leveraging the True Model-Based Requirements (TMBR) paradigm. Training simulators, often developed concurrently with their target systems, require solution-agnostic and system-independent requirements. This dual development process is challenged by incomplete knowledge of the simulated system's behavior and design. The proposed method addresses these challenges by adopting a human-centric approach to model key input/output requirements, ensuring the simulator replicates the target system's functional and experiential characteristics.

The methodology enables iterative transformations from the simulated system's models to the training simulator's requirements, allowing continuous updates as the target system evolves. Sensory-based interface modeling and signal decomposition are used to accommodate human factors while maintaining unambiguous, verifiable requirements. Stakeholder needs and constraints are integrated, ensuring practical alignment with real-world applications.

The findings align with INCOSE SE Vision 2035, promoting adaptable and interconnected systems engineering practices. By integrating human-centric and model-based techniques, the method enhances the rigor and completeness of requirements engineering, contributing to the advancement of Model-Based Systems Engineering (MBSE).