Model Based System Engineering Environment Research Articles

A System and Method for improving the Model Based Systems Engineering Environment capability

AbstractAs the evolution of new technologies such as IOT and Cloud Computational Analysis continue, the Systems have become more and more complex and it is grown much in size. Unfortunately the present day SE Environments, Modeling languages and the related tool sets are not sufficient enough to represent the multiple streams problem at hand in one integrated modeling environment which makes all of the Stakeholders and Engineers & Non‐engineers understand the problem scenarios. This lack of integrated modelling environment and a methodology for an additional representation of multiple problem domains limits off the analysis capabilities, timely communication of the technical and project risks to various stakeholders for decision making. It happens due to the inherent capability & limitations of each modeling languages followed so far by the Model Based System Engineering (MBSE) community & to bridge across them. This research paper focuses on improving the SE modeling environment capability from at least three distinct directions. First, it proposes a way to strengthen the SysML semantics with concrete guidelines which helps to reduce the incompleteness & ambiguous nature of the SysML elements especially in the Non Functional Requirements modeling. Then it explores the possibility of integrating the ontology aspects offered in evolving Life‐cycle Modeling Language (LML) specification to an extended SysML profile to complement its constructs to facilitate communication with non‐system engineers as well. Finally, this paper draws parallel between the LML architectural modeling concepts with the Architecture Analysis & Design Language (AADL) constructs and realizes them in an extended SysML profile. This will facilitate the seamless flow of models at various abstraction levels & translation of architectural model information from LML to AADL analytical environment. A case study implemented using an extended SysML profile & a methodology will be presented to measure its effectiveness.

An Investigation of MBSE Practices across the Contractual Boundary

One of the key impediments to the expansion of Model-Based Systems Engineering (MBSE) practice across the lifecycle, particularly in competitive tendering environments, is the continued reliance on documents to define the contractual interface between the acquirer and the supplier. This paper describes the collaborative research project between the University of South Australia (UniSA), the Defence Systems Innovation Centre (DSIC), and the Defence Science Technology Organisation (DSTO) that is investigating the capability of the DSTO Whole-of- System Analytical Framework (WSAF) to supplant contractual documents within the tender process and the degree to which the model passed from acquirer through the contractual interface can be used by the supplier as the basis of their tender response and subsequent systems development. The paper opens with background material and then describes the “learning-by-doing” approach that is being employed. This is followed by a description of methods and tools used to support the design of the tender response and the capture of the design rationale in the same MBSE environment used to capture the project definition. The paper concludes with a discussion section that surfaces the key issues and challenges inherent in utilising this MBSE approach across the contractual boundary and ways that the selected approach could address these.

Maestro – A model‐based systems engineering environment for complex electronic systems

AbstractIn this paper we present Maestro, a model‐based systems engineering (MBSE) environment for design and simulation of complex electronic systems using Orchestra—a simulation tool developed at Sandia National Laboratories. Maestro is deployed as a plugin for MagicDraw and uses Orchestra domain‐specific language (DSL) which is based on SysML. Maestro enables a model‐based design and analysis approach that replaces the traditional document‐based systems engineering process. It provides a unified graphical modeling environment to domain experts who have had to depend on drawing tools for defining system architecture and manual transcription of system topology in creating complex simulation models.