System Modeling Assessment & Roadmap Joint OMG/INCOSE Working Group Objectives: Assess effectiveness of system modeling with SysML in support of MBSE Adoption and Use Develop a preliminary System Modeling Roadmap to improve effectiveness Use the Roadmap to influence the SysML specification, tool vendor implementations, related standards efforts, and industry collaborations Scope: SysML modeling language and tools Modeling languages and tools that support use of SysML (e.g. constraint language, transformations) Reuse libraries (e.g., models, practices, ..) Integrations with other engineering models and tools Focus Areas: Systems Engineering Use Cases System Engineering Concept Model SysML v2/MBSE Capabilities including Model Construction, Model Visualization, Model Analysis, Model Management, Model Interoperability, Members: IBM, EADS, LMC, NASA/JPL, Raytheon, John Deere and Various Consultants 12/30/2018

MBSE Capability: Construct Model Task objective Elaborate concepts, requirements, and metrics for effective model construction that support the next generation system modeling language (SysML v2) Use Cases Systems engineers and other discipline engineers contribute to the development and update of the system model throughout the lifecycle to support system specification, design, analysis, and verification activities MoE Ability to efficiently and intuitively construct models High Level Intent/Driving Requirement:   The next-generation modeling language and tools must enable much more intuitive and efficient model construction. It often requires several clicks to capture a core concept in a model. More streamlined and efficient user interfaces could reduce the time and effort to build and maintain a model. The ability to repeat common modeling patterns with reduced user input (e.g., table-based entry) is another capability to increase modeling productivity and understanding. 12/30/2018

MBE To-Be State Source: NDIA MBE Final Report dated February 2011 Hardware Models Q SET CLR S R System Models Component Models ò G ( s ) U Analysis Models Operational Models Component Models System Models ò G ( s ) U Analysis Models Operational Models Configuration Management Program Management Test Manufacturing Hardware Systems Customer Logistics Software System Models Operational Models The MBE to-be state leverages MBE across the acquisition life cycle to enhance affordability, shorten delivery time, and reduce risk. In the to-be state, the models become an integral part of the technical baseline, and evolve throughout the programs life cycle. The current state is characterized by gaps between domain silos and lifecycle development phase hand-offs that are often the source of errors until later in the development process when they are more expensive to fix.  The future state of MBE seeks to reduce these errors though seamless integration of model data across domains and across the lifecycle by aligning shared model properties and assumptions. Different engineering disciplines concurrently operate on different facets of the system and/or product design, such that the impact of a change in one model can be readily assessed in another model. Engineering and programmatic knowledge is shared through a common technical baseline. The models developed by each discipline evolve in maturity throughout the life cycle, and are not thrown away and redeveloped as the program transitions from one phase of development to another. This includes the up-front mission analysis models, the system requirements and architecture models, the detailed hardware and software design models, and the detailed simulation models used to assess and verify all aspects of the system as it evolves. Early validation of requirements including those for manufacturing and support, and efficient development of a fully integrated technical baseline result in significant improvement to the development process. The collaborative foundation provides a means to share the information from the model registry across the extended enterprise of customers, teammates and suppliers. The foundation includes the modeling standards that enable information exchange, the model registry that enables ready access to the different models, and a trusted environment which enforces protection of intellectual property and secure access to sensitive and classified data. The collaborative environment also enables reuse from one program to another to enable sharing across a family of products and system of systems. The MBE to-be state includes a workforce that is skilled in the use of the matured modeling methods and tools, an infrastructure that supports this capability, and policies that enable it. MBE Enhances Affordability, Shortens Delivery and Reduces Risk Across the Acquisition Life Cycle Needs Current Capabilities Budget/Schedule

Systems Modeling Environment Conceptual Architecture 10/06/14

MBSE Capability: Construct Model More Detailed Requirements: Model Changes (includes a change to a model element or change to a reference to an external model element or other data item, or possibly to a change in metadata) Create new elements or references Update existing elements or references Delete existing elements or references Type of Data Input Manual entry Graphical Text/structure text Tabular/forms based Automated ingest from the following Another model of same type Another model of different type Structured data source (e.g., file, database) Unstructured document Linked data via reference Simple link (e.g., hyper link) Semantic relationship (e.g. OSLC) 12/30/2018

MBSE Capability: Construct Model More Detailed Requirements (cont): Construction Operations Control  access (validate user has data entry privileges) Automated ingest Select and validate data source Transform input to match schema Maintain links/log to external data source Manual entry Apply pattern Apply validation rules and assess Resolve validation errors Log changes to model Capture metadata regarding update (who changed, when, rationale, input source...) Report differences Non Functional Requirements Performance Security Extensibility New technology New requirements 12/30/2018

System Engineering Model Construction Role of the Concept Model A model is a simplified representation of a system at some particular point in time or space intended to promote understanding of the real system. As an abstraction of a system, it offers insight about one or more of the system's aspects, such as its function, structure, properties, performance, behavior, or cost. Source: http://sebokwiki.org/wiki/Representing_Systems_with_Models VIEW VIEW System Requirements System Test Cases Controller/Transform System Model VIEW System Interfaces Controller/ Transform MODEL Update 2003 Model with Latest VIEW System Design Controller/Transform META MODEL 12/30/2018

MBSE Capability: Construct Model Interactive Model Construction Standard tool HMI with Model Browser Model Diagram Model Tool Palette Model Library Access Stereo type extensions Data types, and units Patterns (e.g. Frequently used combinations of model elements) Batch Model Construction Tabular data import Requirements (ID, Description, attributes….) mapped to Requirement Stereotype Interfaces (ID, Description, Type, Attributes) mapped to Interface Stereotype Use Cases (ID, Description, Pre-Condition, Post-Condition, scenario steps,…) Structured document import Unstructured text 12/30/2018

MBSE Capability: Construct Model Dependencies on other MBSE Assessment Capabilities Concept Model Understanding the core and extended concept model is a key pre-requisite to both interactive and batch model construction Includes transformation from tabular, structured text and natural language descriptions to model based representations SE Use Cases Consistent with use cases dependent on model construction Lifecycle aspects of model construction (e.g. concept, architecture, design, implementation, integration, verification, validation phases) MBSE Usability Viewpoint/Views for model construction Pattern: Model-View-Controller Tabular: e.g. MS Excel as the model view with macro adapters to the system model Graphical: e.g. MS Visio as the model view with templates and adapters to the system model 3-D Visualization: e.g. STK with adapters linking to the system model Pattern Libraries: e.g. domain specific system model patterns for all views driven from a common library 12/30/2018