Is CAD A Good Paradigm for MBSE?

Abstract

Those looking to advocate for Model‐Based Systems Engineering (MBSE) in the Systems Engineering field often turn to more established fields that have made a similar transition to models to assure others it will be beneficial. One practice that is often compared to MBSE is Computer‐Aided Design (CAD) from the field of mechanical engineering. However, the adequacy of this comparison is challenged upon a side‐by‐side examination of what MBSE and CAD are. Based on the established definitions, it is evident that while CAD can be considered a method of mechanical drawing, MBSE cannot be described as only a method. MBSE is more than installing and utilizing software, it is a process in and of itself. Comparing MBSE to CAD runs the risk of oversimplifying MBSE and setting up expectations that may not be met. Therefore, while CAD may represent a similar paradigm shift as MBSE in terms of digitalization, it may not serve as an adequate paradigm in terms of adoption and benefits. In this paper, we characterize and compare CAD and MBSE and identify the similarities and differences between them. We use the resulting insights to level the expectations of adopting and using MBSE.

Towards Developing Metrics to Evaluate Digital Engineering

“…80 Project methods and processes Increased traceability MBSE methods/processes are a critical part of using MBSE, and it is likely that some expected benefits will not be realized if there is not a method/process established. 79 Using an MBSE method ensures that traceability is maintained throughout the model. 80 Project/Programs Use Methods and processes…”

“…78 Project methods and processes Better analysis capability MBSE methods/processes are a critical part of using MBSE, and it is likely some expected benefits will not be realized if there is not a method/process established. 79 Project methods and processes detail different types of analyses that should be carried out, 80 which should result in a more complete analysis.…”

“…80 Project methods and processes Improved architecture MBSE methods/processes are a critical part of using MBSE, and it is likely some expected benefits will not be realized if there is not a method/process established. 79 An MBSE methodology that defines steps to develop a system architecture model should result in a better architecture than one that is developed independent of a method. 80 Project methods and processes Better requirements generation MBSE methods/processes are a critical part of using MBSE, and it is likely some expected benefits will not be realized if there is not a method/process established.…”

Datasheet: where is requirements engineering gone? A case in Benchmarking Mobile Robotics

“…Figure 1 System driven engineering Flow shows a process proposition for system development that includes optimization techniques. This foundation could lead to the creation of a method to shift from system engineering process as described in [2] to a digitally based process [3] that would explore tailored methods and tool for the mule system design in our fictional company. Such an exploration could help in taking decisions in early conception of the system.…”