How Model-Based Systems Engineering Facilitates Contextual E/E Systems Design

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Growing complexity in E/E system design has made old methodologies unmanageable – and this is true for systems being created across all industries. Whether it’s next-generation aerospace and defense products, autos, medical devices, industrial equipment, or other electrical/electronic systems, the demand for performance, quality, and rapid innovation is increasing.

As a result, E/E system engineers require a new method of building E/E architectures based on model-based systems engineering (MBSE) and a digital thread that spans product and application lifecycles. In this post, we’ll look at how Siemens’ MBSE architecture serves as the cornerstone for an effective, multi-disciplinary E/E systems development flow.

model based systems

What Is Model-Based Systems Design?

MBSE is a system design approach that employs models as the key artifacts for creating and developing complex systems. It entails developing and modifying graphical or mathematical models that describe various aspects of the system, including as its requirements, architecture, behavior, and interactions.

The system is considered as a collection of interrelated components or subsystems in MBSD, and these components are represented using models that encapsulate their properties and interactions. Models can be developed using a variety of modeling languages and tools, including UML, SysML (Systems Modeling Language), and domain-specific modeling languages.

Key principles of MBSE include:

  • Abstraction: Models provide a higher level of abstraction, allowing designers to focus on the essential aspects of the system without getting into implementation details.
  • Iterative Development: Models are refined and updated throughout the design process. Changes made to one model can be automatically propagated to related models, ensuring consistency and reducing errors.
  • Simulation and Analysis: Models can be simulated to evaluate the system’s behavior and performance under different conditions. This allows for early identification of issues, verification of requirements, and optimization of system design before physical implementation.
  • System Integration: MBSD facilitates the integration of different subsystems by providing a clear representation of their interfaces and interactions. Models can be used to identify potential integration issues and ensure that the subsystems work together effectively.
  • Traceability: By linking to system requirements, models enable traceability from requirements to design elements, helping to ensure that the system design satisfies the specified requirements, and allows for better impact analysis when changes occur.

MBSD promotes a systematic and structured approach to system design, fostering collaboration among designers and stakeholders, and reducing design errors and rework.

A Holistic Approach to E/E Systems Design

Beginning with the integrated, model-based, and digitalized approach to E/E system design, Siemens’ solutions create a connected E/E architecture thread that spans across the product and application lifecycles. It all begins with building the model

  1. MBSE enables Siemens E/E systems engineering solutions to capture product and process data such as function definitions, requirements, test cases, configurations, and more – all in a single place.
  2. Domain-specific engineering solutions for the various disciplines can access the data and the models as they build out their designs, which can be linked to the overall model and made available through various views.
  3. Thanks to abstraction, users only see the underlying data via intuitive, dynamic web-based views. Rather than being overwhelmed with information from every discipline, they only see the data they need to complete their tasks.

With access to the model, engineers across disciplines can work within the context of a holistic product architecture. This improves collaboration and design efficiency, while increasing product performance and reliability.

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