SysML Basics

How to draw a State Machine Diagram with EA For an example of a State Machine Diagram (stm) to be drawn using EA, we will use the diagram below from the State Machine Diagram Chapter of Lenny Delligatti’s SysML Distilled. First, create a project and create a package. State Machine Diagram The model element that … Read more

Understanding Stm Diagram Event Pseudostate Region In SysML, events are one of the key elements of a state machine diagram. Events cause changes in the state of the system and are therefore essential for understanding the dynamic behavior of the system. SysML defines four main types of events: signal events, call events, timed events, and … Read more

Understanding Stm Diagram State and Transition State machine diagrams in SysML are powerful tools for visualizing the behavior of complex systems. This article will guide you through the basic concepts of state machine diagrams and explain important points to consider when creating such diagrams. 1. Introduction to State Machine Diagrams A state machine diagram graphically … Read more

How to draw a Sequence Diagram with EA For an example of a Sequence Diagram to be drawn using EA, we will use the diagram below from the Sequence Diagram Chapter of Lenny Delligatti’s SysML Distilled. First, we will model the blocks that will participate in the Sequence Diagram. Create a new project, create a … Read more

Understanding Seq Diag Constraints Fragment Decompose Execution Specifications An execution specification is a mechanism for explicitly indicating the start and end of execution of specific actions in a sequence diagram. This allows you to more accurately understand and document the complex flow of system dynamic behavior and interactions. The use of execution specifications highlights the … Read more

In this article, we will explain the concept of sequence diagrams and specifically look at how they can be used in systems engineering. Understanding Seq Diagram LifeLine and Message Sequence diagrams in SysML provide a visual representation of how components interact within a system and how that interaction unfolds over time. Each component (lifeline) and … Read more

How to draw a Activity Diagram with EA Starting with Activity Diagram, we will draw some of the Activity Diagrams shown as examples in Chapter 9 Activity Diagram Chapter of “Practical Guide to SysML: The System Modeling Language” 2nd Edition using EA. This is because I think it would be more useful for readers to … Read more

Activity diagrams are used to define and visualize the tasks performed within a system and the input/output flow and control flow between those tasks. These diagrams are particularly effective at showing the workflow of a system: what needs to happen and when, and what decisions need to be made along the way. In SysML, Activity … Read more

Understanding Dependencies, Allocate, Comment In this blog post, we will take a closer look at Dependencies, Allocate, Comment. Dependencies A dependency is one of the frequently used relationship types in SysML or UML modeling, indicating the dependence of one element on another. These relationships are especially useful in the early stages of system design, when … Read more

Understanding Generalizations In this blog post, we will take a closer look at Generalizations. In the Block Definition Diagram (BDD), generalizations represent inheritance relationships between classifiers. This is similar to the inheritance structure between classes we commonly see in object-oriented programming. Inheritance allows another class (subclass) to inherit the characteristics and functions of one class … Read more