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Modified on
22 Jan 2025 06:57 pm
Skill-Lync
Welcome to the Physical Modeling in Simscape with Simulink & MATLAB blog series! This series aims to equip you with the knowledge and skills to model and simulate physical systems using Simulink and MATLAB. These tools, especially Simscape, empower engineers to model real-world systems across domains like mechanical, electrical, hydraulic, and thermal systems. Whether you’re a student or a professional, mastering these tools can open doors to efficient and precise engineering designs.
In this blog, we’ll explore the fundamental elements of electrical and mechanical systems and understand how these components form the building blocks of larger, complex systems. We will also look at how mathematical relationships such as Ohm's Law and Newton’s Second Law are represented and simulated in Simulink’s graphical environment. Let’s dive into this fascinating journey!
Fundamental Elements of Electrical and Mechanical Systems
Electrical and mechanical systems are built using a set of fundamental components. For electrical systems, the basic elements include:
Similarly, in mechanical systems, the fundamental elements are:
For instance, an RLC circuit (resistor, inductor, capacitor) can represent radio transmitters, FM receivers, or antenna circuits. Likewise, a spring-mass-damper system is often used to model vehicle suspensions.
Modeling Fundamental Relationships
Electrical Systems: Ohm’s Law
When a potential difference (V) is applied across a resistor, current (I) flows through it, governed by Ohm’s Law:
V=I×RV = I \times RV=I×R
This relationship can be simulated in Simulink using predefined resistor blocks. You can even include additional parameters such as temperature effects to refine the model.
Mechanical Systems: Newton’s Second Law
In mechanics, applying a force (F) to a mass (m) results in acceleration (a), given by:
F=m×aF = m \times aF=m×a
Simulink allows us to represent these dynamics visually using blocks. For example, the rate of change of velocity (a) and position (x) can be represented using first- and second-order differential equations.
By using these components, you can model complex systems like electrical circuits and mechanical suspensions. Simulink simplifies this process, allowing users to focus on design rather than lengthy calculations.
Conclusion
Understanding the fundamental elements of electrical and mechanical systems is key to building accurate models in Simscape. Simulink’s graphical environment enables engineers to simulate these systems efficiently, using blocks that represent components like resistors, capacitors, springs, and dampers.
This blog has laid the groundwork for exploring more advanced simulations. Stay tuned for the next installment in the series, where we’ll delve into Simulink’s capabilities for modeling interconnected systems like pumps and motor drives. Ready to start your journey? Check out Skill-Lync’s Simscape Training and master the art of physical modeling using MATLAB Simscape!
This blog is part of our ongoing Physical Modeling in Simscape with Simulink & MATLAB. If you missed the previous posts, check them out here.
Would you like to have a more interactive experience in Physical Modeling?
Skill-Lync has released a FREE comprehensive course covering Physical Modeling in Simscape with Simulink & MATLAB! Check it out here.
Check out our hands-on course today and add it to your list of skills!
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Author
Uma Maheswari K
Author
Skill-Lync
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