Systems Engineering Design: Architecting Trustworthiness in Cyber Physical Systems Using an Extended Aggregated Modality
Brian Connett, Bryan M. O’Halloran · Procedia Computer Science · 2018
To determine the overall trustworthiness of a complex Cyber Physical System (CPS), it is critical to consider several methods of engineering design. Traditionally, translating a customer needs into requirements, through physical realization and into an operation leans on processes that are largely dependent upon functional requirements. There are, however, no strict rules in design that dictate the use of functionality as the fundamental approach. Since no strict rules exist, non-functional requirements will be used contrary to the traditional use of functional requirements. In particular, trustworthiness is a relatively defined term relying on face-validity methods from a multitude of non-functional requirements identified in related research. A limited-design method with Analytical Hierarchy Process (AHP), Axiomatic Design (AD) and Design of Experiments (DOE) is tested using this nonfunctional requirement of trustworthiness. The aggregated measurement is used to determine where it is best to focus design efforts in the concept stage.