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SysML extends UML with powerful systems engineering capabilities for modeling a far wider spectrum of systems, and effectively capturing all aspects of a system’s design. Now, there’s a go-to reference for everyone who wants to start creating accurate and useful system models with SysML.
Drawing on his pioneering experience creating models for Lockheed Martin and NASA, Lenny Delligatti illuminates SysML’s core components, and shows how to use them even under tight deadlines and other constraints. You needn’t know all of SysML to create effective models: SysML Distilled quickly teaches what you do need to know, and helps you deepen your knowledge incrementally as the need arises. Coverage includes:
How SysML extends and improves UML, and how to immediately put it to practical use
How to use SysML as a foundation for Model-Based System Engineering (MBSE) or Model-Based Engineering (MBE)
What to know before you start an SysML modeling project
How to use key SysML diagrams for block definitions, internal blocks, use cases, activities, sequences, state machines, parametrics, requirements, and packages
How to use allocations to define cross-cutting relationships
And much more – including appendices presenting complete SysML notation, identifying changes between SysML versions, and identifying authoritative sources for more information
Product Description
The Systems Modeling Language (SysML) extends UML with powerful systems engineering capabilities for modeling a wider spectrum of systems and capturing all aspects of a system’s design. SysML Distilled is the first clear, concise guide for everyone who wants to start creating effective SysML models.
(Drawing on his pioneering experience at Lockheed Martin and NASA, Lenny Delligatti illuminates SysML’s core components and provides practical advice to help you create good models and good designs. Delligatti begins with an easy-to-understand overview of Model-Based Systems Engineering (MBSE) and an explanation of how SysML enables effective system specification, analysis, design, optimization, verification, and validation. Next, he shows how to use all nine types of SysML diagrams, even if you have no previous experience with modeling languages. A case study running through the text demonstrates the use of SysML in modeling a complex, real-world sociotechnical system.
Modeled after Martin Fowler’s classic UML Distilled, Delligatti’s indispensable guide quickly teaches you what you need to know to get started and helps you deepen your knowledge incrementally as the need arises. Like SysML itself, the book is method independent and is designed to support whatever processes, procedures, and tools you already use.
Coverage Includes
Why SysML was created and the business case for using it
Quickly putting SysML to practical use
What to know before you start a SysML modeling project
Essential concepts that apply to all SysML diagrams
SysML diagram elements and relationships
Diagramming block definitions, internal structures, use cases, activities, interactions, state machines, constraints, requirements, and packages
Using allocations to define mappings among elements across a model
SysML notation tables, version changes, and sources for more information
Features + Benefits
The most practical introduction to SysML
Covers all essential diagrams: block definitions, internal blocks, use cases, activities, sequences, state machines, parametrics, requirements, and packages
How to use SysML to move towards full-fledged Model-Based Systems Engineering (MBSE)
Foreword by Rick Steiner xvii Foreword by Richard Soley xix
Preface xxv
Acknowledgments xxxi
About the Author xxxiii
Chapter 1: Overview of Model-Based Systems Engineering 1
1.1 What Is MBSE? 2
1.2 The Three Pillars of MBSE 4
1.3 The Myth of MBSE 9
Chapter 2: Overview of the Systems Modeling Language 11
2.1 What SysML Is–and Isn’t 11
2.2 Yes, SysML Is Based on UML–but You Can Start with SysML 13
2.3 SysML Diagram Overview 14
2.4 General Diagram Concepts 17
Chapter 3: Block Definition Diagrams 23
3.1 Purpose 23
3.2 When Should You Create a BDD? 24
3.3 The BDD Frame 24
3.4 Blocks 26
3.5 Associations: Another Notation for a Property 44
3.6 Generalizations 49
3.7 Dependencies 52
3.8 Actors 53
3.9 Value Types 55
3.10 Constraint Blocks 57
3.11 Comments 59
Chapter 4: Internal Block Diagrams 63
4.1 Purpose 63
4.2 When Should You Create an IBD? 64
4.3 Blocks, Revisited 64
4.4 The IBD Frame 65
4.5 BDDs and IBDs: Complementary Views of a Block 66
4.6 Part Properties 67
4.7 Reference Properties 67
4.8 Connectors 68
4.9 Item Flows 71
4.10 Nested Parts and References 72
Chapter 5: Use Case Diagrams 77
5.1 Purpose 77
5.2 When Should You Create a Use Case Diagram? 77
5.3 Wait! What’s a Use Case? 78
5.4 The Use Case Diagram Frame 81
5.5 Use Cases 82
5.6 System Boundary 83
5.7 Actors 83
5.8 Associating Actors with Use Cases 84
5.9 Base Use Cases 85
5.10 Included Use Cases 85
5.11 Extending Use Cases 87
Chapter 6: Activity Diagrams 89
6.1 Purpose 89
6.2 When Should You Create an Activity Diagram? 90
6.3 The Activity Diagram Frame 90
6.4 A Word about Token Flow 92
6.5 Actions: The Basics 93
6.6 Object Nodes 95
6.7 Edges 99
6.8 Actions, Revisited 102
6.9 Control Nodes 112
6.10 Activity Partitions: Allocating Behaviors to Structures 119
Chapter 7: Sequence Diagrams 123
7.1 Purpose 123
7.2 When Should You Create a Sequence Diagram? 124
7.3 The Sequence Diagram Frame 125
7.4 Lifelines 125
7.5 Messages 129
7.6 Destruction Occurrences 138
7.7 Execution Specifications 139
7.8 Constraints 141
7.9 Combined Fragments 144
7.10 Interaction Uses 151
Chapter 8: State Machine Diagrams 155
8.1 Purpose 155
8.2 When Should You Create a State Machine Diagram? 156
8.3 The State Machine Diagram Frame 156
8.4 States 158
8.5 Transitions 162
8.6 Pseudostates 171
8.7 Regions 173
Chapter 9: Parametric Diagrams 177
9.1 Purpose 177
9.2 When Should You Create a Parametric Diagram? 178
9.3 Blocks, Revisited 179
9.4 The Parametric Diagram Frame 182
9.5 Constraint Properties 184
9.6 Constraint Parameters 185
9.7 Value Properties 185
9.8 Binding Connectors 187
Chapter 10: Package Diagrams 189
10.1 Purpose 189
10.2 When Should You Create a Package Diagram? 190
10.3 The Package Diagram Frame 190
10.4 Notations for Namespace Containment 191
10.5 Dependencies between Packages 193
10.6 Importing Packages 193
10.7 Specialized Packages 194
10.8 Shades of Gray: Are You Looking at a Package Diagram or a Block Definition Diagram? 198
Chapter 11: Requirements Diagrams 201
11.1 Purpose 201
11.2 When Should You Create a Requirements Diagram? 202
11.3 The Requirements Diagram Frame 202
11.4 Requirements 204
11.5 Requirements Relationships 205
11.6 Notations for Requirements Relationships 209
11.7 Rationale 213
Chapter 12: Allocations: Cross-Cutting Relationships 215
12.1 Purpose 215
12.2 There’s No Such Thing as an Allocation Diagram 216
12.3 Uses for Allocation Relationships 216
12.4 Notations for Allocation Relationships 219
12.5 Rationale 224
Appendix A: SysML Notation Desk Reference 227
Appendix B: Changes between SysML Versions 245
Bibliography 253
Index 255
SysML Distilled is a go-to reference for everyone who wants to start creating accurate and useful system models with SysML. Drawing on his pioneering experience creating models for Lockheed Martin and NASA, Lenny Delligatti illuminates SysML's core components, and shows how to use them even under tight deadlines and other constraints. The reader needn't know all of SysML to create effective models: SysML Distilled quickly teaches what does need to be known, and helps deepen the reader's knowledge incrementally as the need arises.
Drawing on his pioneering experience creating models for Lockheed Martin and NASA, Lenny Delligatti illuminates SysML’s core components, and shows how to use them even under tight deadlines and other constraints. You needn’t know all of SysML to create effective models: SysML Distilled quickly teaches what you do need to know, and helps you deepen your knowledge incrementally as the need arises. Coverage includes:
How SysML extends and improves UML, and how to immediately put it to practical use
How to use SysML as a foundation for Model-Based System Engineering (MBSE) or Model-Based Engineering (MBE)
What to know before you start an SysML modeling project
How to use key SysML diagrams for block definitions, internal blocks, use cases, activities, sequences, state machines, parametrics, requirements, and packages
How to use allocations to define cross-cutting relationships
And much more – including appendices presenting complete SysML notation, identifying changes between SysML versions, and identifying authoritative sources for more information
Product Description
The Systems Modeling Language (SysML) extends UML with powerful systems engineering capabilities for modeling a wider spectrum of systems and capturing all aspects of a system’s design. SysML Distilled is the first clear, concise guide for everyone who wants to start creating effective SysML models.
(Drawing on his pioneering experience at Lockheed Martin and NASA, Lenny Delligatti illuminates SysML’s core components and provides practical advice to help you create good models and good designs. Delligatti begins with an easy-to-understand overview of Model-Based Systems Engineering (MBSE) and an explanation of how SysML enables effective system specification, analysis, design, optimization, verification, and validation. Next, he shows how to use all nine types of SysML diagrams, even if you have no previous experience with modeling languages. A case study running through the text demonstrates the use of SysML in modeling a complex, real-world sociotechnical system.
Modeled after Martin Fowler’s classic UML Distilled, Delligatti’s indispensable guide quickly teaches you what you need to know to get started and helps you deepen your knowledge incrementally as the need arises. Like SysML itself, the book is method independent and is designed to support whatever processes, procedures, and tools you already use.
Coverage Includes
Why SysML was created and the business case for using it
Quickly putting SysML to practical use
What to know before you start a SysML modeling project
Essential concepts that apply to all SysML diagrams
SysML diagram elements and relationships
Diagramming block definitions, internal structures, use cases, activities, interactions, state machines, constraints, requirements, and packages
Using allocations to define mappings among elements across a model
SysML notation tables, version changes, and sources for more information
Features + Benefits
The most practical introduction to SysML
Covers all essential diagrams: block definitions, internal blocks, use cases, activities, sequences, state machines, parametrics, requirements, and packages
How to use SysML to move towards full-fledged Model-Based Systems Engineering (MBSE)
Foreword by Rick Steiner xvii Foreword by Richard Soley xix
Preface xxv
Acknowledgments xxxi
About the Author xxxiii
Chapter 1: Overview of Model-Based Systems Engineering 1
1.1 What Is MBSE? 2
1.2 The Three Pillars of MBSE 4
1.3 The Myth of MBSE 9
Chapter 2: Overview of the Systems Modeling Language 11
2.1 What SysML Is–and Isn’t 11
2.2 Yes, SysML Is Based on UML–but You Can Start with SysML 13
2.3 SysML Diagram Overview 14
2.4 General Diagram Concepts 17
Chapter 3: Block Definition Diagrams 23
3.1 Purpose 23
3.2 When Should You Create a BDD? 24
3.3 The BDD Frame 24
3.4 Blocks 26
3.5 Associations: Another Notation for a Property 44
3.6 Generalizations 49
3.7 Dependencies 52
3.8 Actors 53
3.9 Value Types 55
3.10 Constraint Blocks 57
3.11 Comments 59
Chapter 4: Internal Block Diagrams 63
4.1 Purpose 63
4.2 When Should You Create an IBD? 64
4.3 Blocks, Revisited 64
4.4 The IBD Frame 65
4.5 BDDs and IBDs: Complementary Views of a Block 66
4.6 Part Properties 67
4.7 Reference Properties 67
4.8 Connectors 68
4.9 Item Flows 71
4.10 Nested Parts and References 72
Chapter 5: Use Case Diagrams 77
5.1 Purpose 77
5.2 When Should You Create a Use Case Diagram? 77
5.3 Wait! What’s a Use Case? 78
5.4 The Use Case Diagram Frame 81
5.5 Use Cases 82
5.6 System Boundary 83
5.7 Actors 83
5.8 Associating Actors with Use Cases 84
5.9 Base Use Cases 85
5.10 Included Use Cases 85
5.11 Extending Use Cases 87
Chapter 6: Activity Diagrams 89
6.1 Purpose 89
6.2 When Should You Create an Activity Diagram? 90
6.3 The Activity Diagram Frame 90
6.4 A Word about Token Flow 92
6.5 Actions: The Basics 93
6.6 Object Nodes 95
6.7 Edges 99
6.8 Actions, Revisited 102
6.9 Control Nodes 112
6.10 Activity Partitions: Allocating Behaviors to Structures 119
Chapter 7: Sequence Diagrams 123
7.1 Purpose 123
7.2 When Should You Create a Sequence Diagram? 124
7.3 The Sequence Diagram Frame 125
7.4 Lifelines 125
7.5 Messages 129
7.6 Destruction Occurrences 138
7.7 Execution Specifications 139
7.8 Constraints 141
7.9 Combined Fragments 144
7.10 Interaction Uses 151
Chapter 8: State Machine Diagrams 155
8.1 Purpose 155
8.2 When Should You Create a State Machine Diagram? 156
8.3 The State Machine Diagram Frame 156
8.4 States 158
8.5 Transitions 162
8.6 Pseudostates 171
8.7 Regions 173
Chapter 9: Parametric Diagrams 177
9.1 Purpose 177
9.2 When Should You Create a Parametric Diagram? 178
9.3 Blocks, Revisited 179
9.4 The Parametric Diagram Frame 182
9.5 Constraint Properties 184
9.6 Constraint Parameters 185
9.7 Value Properties 185
9.8 Binding Connectors 187
Chapter 10: Package Diagrams 189
10.1 Purpose 189
10.2 When Should You Create a Package Diagram? 190
10.3 The Package Diagram Frame 190
10.4 Notations for Namespace Containment 191
10.5 Dependencies between Packages 193
10.6 Importing Packages 193
10.7 Specialized Packages 194
10.8 Shades of Gray: Are You Looking at a Package Diagram or a Block Definition Diagram? 198
Chapter 11: Requirements Diagrams 201
11.1 Purpose 201
11.2 When Should You Create a Requirements Diagram? 202
11.3 The Requirements Diagram Frame 202
11.4 Requirements 204
11.5 Requirements Relationships 205
11.6 Notations for Requirements Relationships 209
11.7 Rationale 213
Chapter 12: Allocations: Cross-Cutting Relationships 215
12.1 Purpose 215
12.2 There’s No Such Thing as an Allocation Diagram 216
12.3 Uses for Allocation Relationships 216
12.4 Notations for Allocation Relationships 219
12.5 Rationale 224
Appendix A: SysML Notation Desk Reference 227
Appendix B: Changes between SysML Versions 245
Bibliography 253
Index 255
SysML Distilled is a go-to reference for everyone who wants to start creating accurate and useful system models with SysML. Drawing on his pioneering experience creating models for Lockheed Martin and NASA, Lenny Delligatti illuminates SysML's core components, and shows how to use them even under tight deadlines and other constraints. The reader needn't know all of SysML to create effective models: SysML Distilled quickly teaches what does need to be known, and helps deepen the reader's knowledge incrementally as the need arises.