DOCSLIB.ORG

Sysml & Industry: Improving Systems Engineering

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Sysml & Industry: Improving Systems Engineering SysML & Industry: Improving Systems Engineering By Richard Mark Soley, Ph.D. Chairman and CEO Object Management Group, Inc. [email protected] http://www.omg.org What is SysML? The OMG Systems Modeling Language is: – a general-purpose graphical modeling language for specifying, analyzing, designing, and verifying complex systems, using model-based systems engineering – Those systems may include hardware, software, information, personnel, procedures, and facilities – In particular, the language provides graphical representations with a semantic foundation for modeling system requirements, behavior, structure, and parametrics, which is used to integrate with other engineering analysis models. Motivation Systems Engineers needed a robust language for analyzing, specifying, designing, verifying and validating systems Many different modeling techniques existed – Behavior diagrams, IDEF0, N2 charts, … A general purpose language must: – satisfy a broad set of modeling requirements (behavior, structure, performance, etc.) – integrate with other disciplines (software, hardware, process, etc.) – be scalable – be adaptable to different software engineering domains – be supported by multiple, interoperable tools What is SysML? OMG’s Systems Modeling Language Standard Expressed as a UML Profile, … …extending UML far beyond software It’s for Specifying, Analyzing, Designing, and Verifying complex systems that may include Hardware, Software, Information, Personnel, and Facilities First major users: Military and Aerospace Eleven supporting vendors listed; more coming What is SysML? A graphical modeling language adopted in response to the UML for Systems Engineering RFP, developed by the OMG, INCOSE, and AP233 – Formally, a UML Profile that represents a subset of UML 2 with extensions Supports the specification, analysis, design, verification, and validation of systems that include hardware, software, data, personnel, procedures, and facilities Supports model and data interchange via XML Metadata Interchange (XMI®) and the evolving AP233 standard (in-process) Background Joint INCOSE / Object Management Group (OMG) Initiative to extend UML to SE Systems Engineering Domain Special Interest Group (SE DSIG) began in Sept ‘01 – Aligned with ISO AP-233 Systems Engineering data interchange standard to support tool interoperability UML for SE RFI issued in 2002 UML for SE RFP (ad/03-03-41) issued March 28, 2003 OMG’s Mission Since 1989 Develop an architecture, using appropriate technology, for modeling & distributed application integration, guaranteeing: – reusability of components – interoperability & portability – basis in commercially available software Specifications freely available Implementations exist Member-controlled not-for-profit Who Are OMG? Adaptive Fujitsu NIST Selex AIST Harris No Magic Siemens Alion Science Hewlett-Packard NTT Data Soluta.net Atego Hitachi NTT DoCoMo Technologic Arts Borland IBM Northrop Grumman Toshiba Boeing IHI Heavy Ind. OASIS Toyo U. CA JARA Oracle UMTP CSC Microsoft PRISM Unisys EADS MITRE Progress View5 Deloitte Mitsubishi SAP Visumpoint Electric Ericsson Sapiens W3C NEC OMG’s Best-Known Successes Common Object Request Broker Architecture – CORBA® remains the only language- and platform-neutral interoperability standard, and the basis for the DDS real-time publish & subscribe standard Unified Modeling Language – UMLTM remains the world’s only standardized modeling language Common Warehouse Metamodel – CWMTM, the integration of the last two data warehousing initiatives Meta-Object Facility – MOFTM, the language-defining language XML Metadata Interchange – XMITM, the XML-UML standard Why UML? UML is de facto standard within software engineering community (more than 75% adoption in software development organizations) UML is extensible through its profile mechanism, and can be adapted to support SE requirements UML tools, textbooks, training, education & certification are widely available OMG standardization process supports UML customization for specific domains (e.g., systems engineering) INCOSE/OMG Joint Initiative OMG Systems Engineering Domain Special Interest Group chartered by INCOSE-OMG initiative in July 2001 – create a semantic bridge between ISO 10303-233 standard and ISO/IEC 19501 UML standard – create UML extended modeling language for specifying, designing, and verifying complex systems using profiles, or other extensibility mechanisms. – provide capability for rigorous transfer of specifications and related information among tools used by systems, software and hardware engineers – bridge the semantic gap, the professional engineering discipline gap, and the training gap that exists between systems engineering and software engineering SysML Partners Informal partnership of industry, vendors, government – organized in May 2003 to respond to UML for Systems Engineering RFP – define Systems Modeling Language (SysML™) to customize UML 2 to support the specification, analysis, design, verification and validation of complex systems Partners – Industry • American Systems, Astrium Space, BAE SYSTEMS, Boeing, Deere & Company, Eurostep, Israel Aircraft Industries, Lockheed Martin, Motorola, Northrop Grumman, oose.de, Raytheon, THALES – Government • DoD/OSD, NASA/JPL, NIST – Tool Vendors • Artisan, Ceira, Gentleware, IBM/Rational, I-Logix, PivotPoint Technology, Popkin, Project Technology, 3SL, Telelogic, Vitech – Liaisons and Organizations • AP-233, CCSDS, EAST, INCOSE, Rosetta SysML Milestones UML for SE RFP issued – March 28, 2003 Kickoff meeting – May 6, 2003 Overview presentation to OMG ADTF – Oct 27, 2003 Initial draft submitted to OMG – Jan 12, 2004 INCOSE Review – January 25-26, 2004 INCOSE Review – May 25, 2004 Final revision adoption – July 6, 2006 First available implementations – September 2007 Announcement of SysML certification – May 15, 2009 System Model: The Foundation Requirements Functional/Behavioral Model Performance Model Start Shift Accelerate Brake Control Power Vehicle Input Equations Dynamics Mass System Model Properties MoSdterul ctural Model Safety Model Cost Engine Transmission Transaxle Model Structural/Component Model Other Engineering Analysis Models Integrated System Model Must Address Multiple Aspects of a System SysML Diagrams SysML Diagram Behavior Requirement Structure Diagram Diagram Diagram Activity Sequence State Machine Use Case Block Definition Internal Block Package Diagram Diagram Diagram Diagram Diagram Diagram Diagram Same as UML 2 Parametric Diagram Modified from UML 2 New diagram type Pillars of SysML: Structure 1. Structure definition use Pillars of SysML: Behavior 1. Structure sd ABS_ActivationSequence [Sequence Diagram] 2. Behavior stm TireTraction [State Diagram] interaction d1:Traction m1:Brake Modulator Detector LossOfTraction state machine detTrkLos()Gripping Slipping definition use activity/ RegainTraction sendSignal() function modBrkFrc(traction_signal:boolean) modBrkFrc() sendAck() Pillars of SysML: Requirements 1. Structure 2. Behavior sd ABS_ActivationSequence [Sequence Diagram] stm TireTraction [State Diagram] d1:Traction m1:Brake Modulator Detector LossOfTraction detTrkLos()Gripping Slipping definition use RegainTraction sendSignal() modBrkFrc(traction_signal:boolean) modBrkFrc() sendAck() 3. Requirements Pillars of SysML: Parametrics 1. Structure 2. Behavior sd ABS_ActivationSequence [Sequence Diagram] stm TireTraction [State Diagram] d1:Traction m1:Brake Modulator Detector LossOfTraction detTrkLos()Gripping Slipping definition use RegainTraction sendSignal() modBrkFrc(traction_signal:boolean) modBrkFrc() sendAck() 4. Parametrics 3. Requirements Four Pillars of SysML 1. Structure 2. Behavior sd ABS_ActivationSequence [Sequence Diagram] stm TireTraction [State Diagram] d1:Traction m1:Brake Modulator Detector LossOfTraction detTrkLos()Gripping Slipping RegainTraction definition use sendSignal() modBrkFrc(traction_signal:boolean) modBrkFrc() sendAck() 3. Requirements 4. Parametrics SysML Adoption The Current State of Model Based Systems Engineering, Bone & Cloutier, March 2010 (survey of 128 early adopters of SysML after several years of use) Early Interest in Certification INCOSE’s involvement guaranteed high interest – About 70 Chapters worldwide, thousands of members 25 Subject Matter Experts developed certification, from a broad spectrum of the industry These market players specified adoption: • Lockheed-Martin • Atego • BAI • No Magic • Northrop Grumman • Stevens Institute • Raytheon • Georgia Tech • IBM • Sparx Systems • MITRE • Booz Allen Hamilton • Boeing • VisumPoint • Embedded Plus • InterCAX • Software Stencils • Papyrus (open source) OCSMP Certification Certifies Systems Engineers and other practitioners on the OMG Systems Modeling Language (OMG SysML™) Helps Systems Engineering professionals to assess and demonstrate their knowledge and skills in SysML and its application to MBSE Helps organizations grow their capability in this critical skill area Promotes the use of SysML in support of MBSE Is Available Now in English, Shortly in Japanese! OCSMP Certification Levels Level 1 – Model User – Target: SysML model users – Skill level: Ability to review and interpret SysML diagrams and understand language concepts at introductory level • L1 defines a set of basic SysML capabilities Levels 2, 3, and 4 – Model Builders – Target: SysML model builders and advanced model users – Skill level: Ability to create SysML models in support of MBSE process, and ability to customize model to project and
Load more

Recommended publications
  • 07 Requirements What About RFP/RFB/Rfis?
    CMPSCI520/620 07 Requirements & UML Intro 07 Requirements SW Requirements Specification • Readings • How do we communicate the Requirements to others? • [cK99] Cris Kobryn, Co-Chair, “Introduction to UML: Structural and Use Case Modeling,” UML Revision Task Force Object Modeling with OMG UML Tutorial • It is common practice to capture them in an SRS Series © 1999-2001 OMG and Contributors: Crossmeta, EDS, IBM, Enea Data, • But an SRS doesn’t need to be a single paper document Hewlett-Packard, IntelliCorp, Kabira Technologies, Klasse Objecten, Rational Software, Telelogic, Unisys http://www.omg.org/technology/uml/uml_tutorial.htm • Purpose • [OSBB99] Gunnar Övergaard, Bran Selic, Conrad Bock and Morgan Björkande, “Behavioral Modeling,” UML Revision Task Force, Object Modeling with OMG UML • Contractual requirements Tutorial Series © 1999-2001 OMG and Contributors: Crossmeta, EDS, IBM, Enea elicitation Data, Hewlett-Packard, IntelliCorp, Kabira Technologies, Klasse Objecten, Rational • Baseline Software, Telelogic, Unisys http://www.omg.org/technology/uml/uml_tutorial.htm • for evaluating subsequent products • [laM01] Maciaszek, L.A. (2001): Requirements Analysis and System Design. • for change control requirements Developing Information Systems with UML, Addison Wesley Copyright © 2000 by analysis Addison Wesley • Audience • [cB04] Bock, Conrad, Advanced Analysis and Design with UML • Users, Purchasers requirements http://www.kabira.com/bock/ specification • [rM02] Miller, Randy, “Practical UML: A hands-on introduction for developers,”
    [Show full text]
  • An Optimal Control Approach for Determiniation of the Heat Loss Coefficient in an Ics Solar Domesticater W Heating System
    University of Central Florida STARS Electronic Theses and Dissertations, 2004-2019 2010 An Optimal Control Approach For Determiniation Of The Heat Loss Coefficient In An Ics Solar Domesticater W Heating System Camilo Gil University of Central Florida Part of the Electrical and Electronics Commons Find similar works at: https://stars.library.ucf.edu/etd University of Central Florida Libraries http://library.ucf.edu This Doctoral Dissertation (Open Access) is brought to you for free and open access by STARS. It has been accepted for inclusion in Electronic Theses and Dissertations, 2004-2019 by an authorized administrator of STARS. For more information, please contact [email protected]. STARS Citation Gil, Camilo, "An Optimal Control Approach For Determiniation Of The Heat Loss Coefficient In An Ics Solar Domestic Water Heating System" (2010). Electronic Theses and Dissertations, 2004-2019. 4297. https://stars.library.ucf.edu/etd/4297 AN OPTIMAL CONTROL APPROACH FOR DETERMINATION OF THE HEAT LOSS COEFFICIENT IN AN ICS SOLAR DOMESTIC WATER HEATING SYSTEM by CAMILO GIL B.S. Pontificia Universidad Javeriana, 2001 M.S. University of New Mexico, 2005 A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Electrical and Computer Engineering in the College of Engineering and Computer Science at the University of Central Florida Orlando, Florida Summer Term 2010 Major Professor: Marwan Simaan ©2010 Camilo Gil ii ABSTRACT Water heating in a typical home in the U.S. accounts for a significant portion (between 14% and 25%) of the total home’s annual energy consumption. The objective of considerably reducing the home’s energy consumption from the utilities calls for the use of onsite renewable energy systems.
    [Show full text]
  • Development of an Entity Component System Architecture for Realtime Simulation
    Fachbereich 4: Informatik Development of an Entity Component System Architecture for Realtime Simulation Bachelorarbeit zur Erlangung des Grades Bachelor of Science (B.Sc.) im Studiengang Computervisualistik vorgelegt von Trevor Hollmann Erstgutachter: Prof. Dr.-Ing. Stefan Müller (Institut für Computervisualistik, AG Computergraphik) Zweitgutachter: Kevin Keul, M.Sc. (Institut für Computervisualistik, AG Computergraphik) Koblenz, im September 2019 Erklärung Ich versichere, dass ich die vorliegende Arbeit selbständig verfasst und keine anderen als die angegebenen Quellen und Hilfsmittel benutzt habe. Ja Nein Mit der Einstellung der Arbeit in die Bibliothek bin ich einverstanden. .................................................................................... (Ort, Datum) (Unterschrift) Abstract The development of a game engine is considered a non-trivial problem. [3] The architecture of such simulation software must be able to manage large amounts of simulation objects in real-time while dealing with “crosscutting concerns” [3, p. 36] between subsystems. The use of object oriented paradigms to model simulation objects in class hierar- chies has been reported as incompatible with constantly changing demands dur- ing game development [2, p. 9], resulting in anti-patterns and eventual, messy re-factoring. [13] Alternative architectures using data oriented paradigms re- volving around object composition and aggregation have been proposed as a result. [13, 9, 1, 11] This thesis describes the development of such an architecture with the explicit goals to be simple, inherently compatible with data oriented design, and to make reasoning about performance characteristics possible. Concepts are for- mally defined to help analyze the problem and evaluate results. A functional implementation of the architecture is presented together with use cases common to simulation software. Zusammenfassung Die Entwicklung einer Spiele-Engine wird als nichttriviales Problem betrach- tet.
    [Show full text]
  • Component Diagrams in UML
    9. UML Component Diagrams Page 1 of 4 Component Diagrams in UML The previous articles covered two of the three primary areas in which the UML diagrams are categorized (see Article 1)—Static and Dynamic. The remaining two UML diagrams that fall under the category of Implementation are the Component and Deployment diagrams. In this article, we will discuss the Component diagram. Basics The different high-level reusable parts of a system are represented in a Component diagram. A component is one such constituent part of a system. In addition to representing the high-level parts, the Component diagram also captures the inter- relationships between these parts. So, how are component diagrams different from the previous UML diagrams that we have seen? The primary difference is that Component diagrams represent the implementation perspective of a system. Hence, components in a Component diagram reflect grouping of the different design elements of a system, for example, classes of the system. Let us briefly understand what criteria to apply to model a component. First and foremost, a component should be substitutable as is. Secondly, a component must provide an interface to enable other components to interact and use the services provided by the component. So, why would not a design element like an interface suffice? An interface provides only the service but not the implementation. Implementation is normally provided by a class that implements the interface. In complex systems, the physical implementation of a defined service is provided by a group of classes rather than a single class. A component is an easy way to represent the grouping together of such implementation classes.
    [Show full text]
  • OMG Systems Modeling Language (OMG Sysml™) Tutorial 25 June 2007
    OMG Systems Modeling Language (OMG SysML™) Tutorial 25 June 2007 Sanford Friedenthal Alan Moore Rick Steiner (emails included in references at end) Copyright © 2006, 2007 by Object Management Group. Published and used by INCOSE and affiliated societies with permission. Status • Specification status – Adopted by OMG in May ’06 – Finalization Task Force Report in March ’07 – Available Specification v1.0 expected June ‘07 – Revision task force chartered for SysML v1.1 in March ‘07 • This tutorial is based on the OMG SysML adopted specification (ad-06-03-01) and changes proposed by the Finalization Task Force (ptc/07-03-03) • This tutorial, the specifications, papers, and vendor info can be found on the OMG SysML Website at http://www.omgsysml.org/ 7/26/2007 Copyright © 2006,2007 by Object Management Group. 2 Objectives & Intended Audience At the end of this tutorial, you should have an awareness of: • Benefits of model driven approaches for systems engineering • SysML diagrams and language concepts • How to apply SysML as part of a model based SE process • Basic considerations for transitioning to SysML This course is not intended to make you a systems modeler! You must use the language. Intended Audience: • Practicing Systems Engineers interested in system modeling • Software Engineers who want to better understand how to integrate software and system models • Familiarity with UML is not required, but it helps 7/26/2007 Copyright © 2006,2007 by Object Management Group. 3 Topics • Motivation & Background • Diagram Overview and Language Concepts • SysML Modeling as Part of SE Process – Structured Analysis – Distiller Example – OOSEM – Enhanced Security System Example • SysML in a Standards Framework • Transitioning to SysML • Summary 7/26/2007 Copyright © 2006,2007 by Object Management Group.
    [Show full text]
  • PART 3: UML Dynamic Modelling Notations • State Machines/Statecharts • Collaboration Diagrams • Sequence Diagrams • Activity Diagrams
    PART 3: UML Dynamic Modelling Notations • State machines/statecharts • Collaboration diagrams • Sequence diagrams • Activity diagrams. Chapter 19 of the textbook is relevant to this part. 1 State machines • State machines describe dynamic behaviour of objects, show life history of objects over time + object communications. • Used for real-time system design (eg., robotics); GUI design (states represent UI screens/modes). Example shows simple state machine with two states, On and Off and transitions between them. 2 Switch Off swon swoff On Simple state machine 3 State machines Elements of a state machine are: States: Rounded-corner boxes, containing state name. Transitions: Arrows from one state, source of transition, to another, target, labelled with event that causes transition. Default initial state: State of object at start of its life history. Shown as target of transition from initial pseudostate (black filled circle). Termination of state machine can be shown by `bullseye' symbol. 4 State machines UML divides state machines into two kinds: 1. Protocol state machines { describe allowed life histories of objects of a class. Events on transitions are operations of that class, transitions may have pre and post conditions. Transitions cannot have generated actions (although we will allow this). 2. Behaviour state machines { describe operation execution/implementation of object behaviour. Transitions do not have postconditions, but can have actions. State machines describe behaviour of objects of a particular class, or execution processing of an operation. 5 State machines • Class diagrams describe system data, independently of time. • State machines show how system/objects can change over time. • Switch state machine is protocol state machine for objects of Switch class.
    [Show full text]
  • Affordit!: a Tool for Authoring Object Component Behavior in Virtual
    AffordIt!: A Tool for Authoring Object Component Behavior in Virtual Reality * † ‡ § Sina Masnadi Andres´ N. Vargas Gonzalez´ Brian Williamson Joseph J. LaViola Jr. Department of Computer Science University of Central Florida (a) (b) (c) (d) Figure 1: These figures show a sequence of steps followed to add a rotation affordance to the door of a washer machine. (a) An object in the scenario (b) Cylinder shape selection wrapping the door. (c) A user sets the amount of rotation the door will be constrained to. (d) An animation generated from the affordance can be visualized. ABSTRACT realistic experiences necessary to a VR scene, but not asset creation In this paper we present AffordIt!, a tool for adding affordances (a situation described in Hughes et al. [17]) which are needed to to the component parts of a virtual object. Following 3D scene build a virtual scene. To alleviate this problem, recent research has been focusing on frameworks to ease users’ authoring process as reconstruction and segmentation procedures, users find themselves with complete virtual objects, but no intrinsic behaviors have been seen in [9, 12, 35]. 3D scene reconstruction [32, 34, 44, 49] provides assigned, forcing them to use unfamiliar Desktop-based 3D editing a suitable solution to the problem. Initially a 3D reconstructed tools. AffordIt! offers an intuitive solution that allows a user to environment will be composed of a continuous mesh which can be segmented via autonomous tools as shown in George et al. [10] and select a region of interest for the mesh cutter tool, assign an intrinsic behavior and view an animation preview of their work.
    [Show full text]
  • UML Tutorial: Sequence Diagrams
    UML Tutorial: Sequence Diagrams. Robert C. Martin Engineering Notebook Column April, 98 In my last column, I described UML Collaboration diagrams. Collaboration diagrams allow the designer to specify the sequence of messages sent between objects in a collaboration. The style of the diagram emphasizes the relationships between the objects as opposed to the sequence of the messages. In this column we will be discussing UML Sequence diagrams. Sequence diagrams contain the same information as Collaboration diagrams, but emphasize the sequence of the messages instead of the relationships between the objects. The Cellular Phone Revisited Here again is the final collaboration diagram from last column’s Cellular Phone example. (See Figure 1.) 1*:ButtonPressed() :DigitButton Digit:Button 1.1:Digit(code) Adapter 2:ButtonPressed() :SendButton Send:Button :Dialler Adapter 2.1:Send() 1.1.2:EmitTone(code) 2.1.1:Connect(pno) 1.1.1:DisplayDigit(code) 2.1.1.1:InUse() :Cellular display display:Dialler :Speaker Radio :CRDisplay Display Figure 1: Collaboration diagram of Cellular Phone. The Sequence diagram that corresponds to this model is shown in Figure 2. It is pretty easy to see what the diagrams in Figure 2 are telling us, especially when we compare them to Figure 1. Let’s walk through the features. First of all, there are two sequence diagrams present. The first one captures the course of events that takes place when a digit button is pressed. The second captures what happens when the user pushes the ‘send’ button in order to make a call. At the top of each diagram we see the rectangles that represent objects.
    [Show full text]
  • Sysml, the Language of MBSE Paul White
    Welcome to SysML, the Language of MBSE Paul White October 8, 2019 Brief Introduction About Myself • Work Experience • 2015 – Present: KIHOMAC / BAE – Layton, Utah • 2011 – 2015: Astronautics Corporation of America – Milwaukee, Wisconsin • 2001 – 2011: L-3 Communications – Greenville, Texas • 2000 – 2001: Hynix – Eugene, Oregon • 1999 – 2000: Raytheon – Greenville, Texas • Education • 2019: OMG OCSMP Model Builder—Fundamental Certification • 2011: Graduate Certification in Systems Engineering and Architecting – Stevens Institute of Technology • 1999 – 2004: M.S. Computer Science – Texas A&M University at Commerce • 1993 – 1998: B.S. Computer Science – Texas A&M University • INCOSE • Chapters: Wasatch (2015 – Present), Chicagoland (2011 – 2015), North Texas (2007 – 2011) • Conferences: WSRC (2018), GLRCs (2012-2017) • CSEP: (2017 – Present) • 2019 INCOSE Outstanding Service Award • 2019 INCOSE Wasatch -- Most Improved Chapter Award & Gold Circle Award • Utah Engineers Council (UEC) • 2019 & 2018 Engineer of the Year (INCOSE) for Utah Engineers Council (UEC) • Vice Chair • Family • Married 14 years • Three daughters (1, 12, & 10) 2 Introduction 3 Our Topics • Definitions and Expectations • SysML Overview • Basic Features of SysML • Modeling Tools and Techniques • Next Steps 4 What is Model-based Systems Engineering (MBSE)? Model-based systems engineering (MBSE) is “the formalized application of modeling to support system requirements, design, analysis, verification and validation activities beginning in the conceptual design phase and continuing throughout development and later life cycle phases.” -- INCOSE SE Vision 2020 5 What is Model-based Systems Engineering (MBSE)? “Formal systems modeling is standard practice for specifying, analyzing, designing, and verifying systems, and is fully integrated with other engineering models. System models are adapted to the application domain, and include a broad spectrum of models for representing all aspects of systems.
    [Show full text]
  • Plantuml Language Reference Guide (Version 1.2021.2)
    Drawing UML with PlantUML PlantUML Language Reference Guide (Version 1.2021.2) PlantUML is a component that allows to quickly write : • Sequence diagram • Usecase diagram • Class diagram • Object diagram • Activity diagram • Component diagram • Deployment diagram • State diagram • Timing diagram The following non-UML diagrams are also supported: • JSON Data • YAML Data • Network diagram (nwdiag) • Wireframe graphical interface • Archimate diagram • Specification and Description Language (SDL) • Ditaa diagram • Gantt diagram • MindMap diagram • Work Breakdown Structure diagram • Mathematic with AsciiMath or JLaTeXMath notation • Entity Relationship diagram Diagrams are defined using a simple and intuitive language. 1 SEQUENCE DIAGRAM 1 Sequence Diagram 1.1 Basic examples The sequence -> is used to draw a message between two participants. Participants do not have to be explicitly declared. To have a dotted arrow, you use --> It is also possible to use <- and <--. That does not change the drawing, but may improve readability. Note that this is only true for sequence diagrams, rules are different for the other diagrams. @startuml Alice -> Bob: Authentication Request Bob --> Alice: Authentication Response Alice -> Bob: Another authentication Request Alice <-- Bob: Another authentication Response @enduml 1.2 Declaring participant If the keyword participant is used to declare a participant, more control on that participant is possible. The order of declaration will be the (default) order of display. Using these other keywords to declare participants
    [Show full text]
  • Sysml Distilled: a Brief Guide to the Systems Modeling Language
    ptg11539604 Praise for SysML Distilled “In keeping with the outstanding tradition of Addison-Wesley’s techni- cal publications, Lenny Delligatti’s SysML Distilled does not disappoint. Lenny has done a masterful job of capturing the spirit of OMG SysML as a practical, standards-based modeling language to help systems engi- neers address growing system complexity. This book is loaded with matter-of-fact insights, starting with basic MBSE concepts to distin- guishing the subtle differences between use cases and scenarios to illu- mination on namespaces and SysML packages, and even speaks to some of the more esoteric SysML semantics such as token flows.” — Jeff Estefan, Principal Engineer, NASA’s Jet Propulsion Laboratory “The power of a modeling language, such as SysML, is that it facilitates communication not only within systems engineering but across disci- plines and across the development life cycle. Many languages have the ptg11539604 potential to increase communication, but without an effective guide, they can fall short of that objective. In SysML Distilled, Lenny Delligatti combines just the right amount of technology with a common-sense approach to utilizing SysML toward achieving that communication. Having worked in systems and software engineering across many do- mains for the last 30 years, and having taught computer languages, UML, and SysML to many organizations and within the college setting, I find Lenny’s book an invaluable resource. He presents the concepts clearly and provides useful and pragmatic examples to get you off the ground quickly and enables you to be an effective modeler.” — Thomas W. Fargnoli, Lead Member of the Engineering Staff, Lockheed Martin “This book provides an excellent introduction to SysML.
    [Show full text]
  • Systems Engineering with Sysml/UML Morgan Kaufmann OMG Press
    Systems Engineering with SysML/UML Morgan Kaufmann OMG Press Morgan Kaufmann Publishers and the Object Management Group™ (OMG) have joined forces to publish a line of books addressing business and technical topics related to OMG’s large suite of software standards. OMG is an international, open membership, not-for-profi t computer industry consortium that was founded in 1989. The OMG creates standards for software used in government and corporate environments to enable interoperability and to forge common development environments that encourage the adoption and evolution of new technology. OMG members and its board of directors consist of representatives from a majority of the organizations that shape enterprise and Internet computing today. OMG’s modeling standards, including the Unifi ed Modeling Language™ (UML®) and Model Driven Architecture® (MDA), enable powerful visual design, execution and maintenance of software, and other processes—for example, IT Systems Modeling and Business Process Management. The middleware standards and profi les of the Object Management Group are based on the Common Object Request Broker Architecture® (CORBA) and support a wide variety of industries. More information about OMG can be found at http://www.omg.org/. Related Morgan Kaufmann OMG Press Titles UML 2 Certifi cation Guide: Fundamental and Intermediate Exams Tim Weilkiens and Bernd Oestereich Real-Life MDA: Solving Business Problems with Model Driven Architecture Michael Guttman and John Parodi Architecture Driven Modernization: A Series of Industry Case Studies Bill Ulrich Systems Engineering with SysML/UML Modeling, Analysis, Design Tim Weilkiens Acquisitions Editor: Tiffany Gasbarrini Publisher: Denise E. M. Penrose Publishing Services Manager: George Morrison Project Manager: Mónica González de Mendoza Assistant Editor: Matt Cater Production Assistant: Lianne Hong Cover Design: Dennis Schaefer Cover Image: © Masterfile (Royalty-Free Division) Morgan Kaufmann Publishers is an imprint of Eslsevier.
    [Show full text]