Advanced Modeling and Result Visualization in Simscape

Welcome back to the Physical Modeling in Simscape with Simulink & MATLAB blog series! In the previous post, we explored the basics of Simulink and its Library Browser. Now, let’s take a closer look at configuring blocks, running simulations, and analyzing results. We’ll also discuss advanced features like color-coded signals in Simscape and the Simscape Component Library. 

By the end of this blog, you’ll have a clear understanding of how to create and interpret dynamic simulations, a key focus of Skill-Lync’s Simscape Course Online. 

Understanding Color-Coded Signals in Simscape 

Simscape uses a color-coded system to represent various physical domains: 

• Blue: Electrical components (e.g., resistors, inductors). 
• Green: Mechanical components (e.g., springs, dampers). 
• Red: Thermal elements (e.g., heat exchangers, thermal masses). 

For example, in a solenoid model, blue signals represent electrical inputs, while green signals represent the mechanical output of the solenoid. This color-coding simplifies multi-domain modeling, making it easier to visualize complex systems. 

Running and Analyzing Simulations 

To better understand how Simulink handles simulations, let’s revisit the jet pump model: 

• Open the pre-built model from the Help menu. 
• Adjust input parameters, such as angular velocity or pump configuration. 
• Run the simulation using the Run button. 

Results are displayed in a scope, plotting flow rates (Q1, Q2, QT) over time. For example, a pump operating at 1800 RPM might produce specific flow rates. Adjusting the RPM to 2000 or 2500 changes these values, demonstrating the system’s sensitivity to input parameters. 

Visualization and Post-Processing 

Simulink offers powerful tools for result visualization: 

• Zoom Options: Focus on specific time intervals to analyze detailed behavior. 
• Cursor Measurements: Highlight and compare data points to calculate changes in values or time intervals. 
• Configuration Properties: Customize plot layouts, axis scaling, and time spans for better readability. 

For instance, zooming into a flow rate plot might reveal overlapping lines for Q2 and QT, indicating near-identical behavior. These insights are crucial for refining models and improving system performance. 

Creating Custom Models 

Let’s consider a custom example: multiplying a ramp input by a constant value. Follow these steps: 

• Add a Ramp Block to generate time-dependent values (e.g., y=1×ty = 1 \times ty=1×t). 
• Multiply the ramp by a Constant Block (e.g., 12.3). 
• Display the output using a Scope Block. 
• Run the simulation and observe the results. At t=10t = 10t=10 seconds, the output would be 12.3×10=12312.3 \times 10 = 12312.3×10=123, visualized as a continuous ramp in the scope. 

Exploring Advanced Features 

Simulink’s advanced libraries offer blocks for: 

• Hydraulic Systems: Simulate pumps, valves, and fluid dynamics. 
• Thermal Systems: Analyze heat transfer and thermal conduction. 
• Mechanical Systems: Model dampers, springs, and rotational motion. 

For example, a rotational damper block can simulate friction in a mechanical system. Detailed documentation for each block explains the governing equations, input parameters, and real-world applications. 

Conclusion 

From running pre-built models to creating custom simulations, Simulink and Simscape provide endless possibilities for physical modeling and simulation. These tools empower engineers to design, test, and optimize systems efficiently. 

Ready to elevate your skills? Enroll in Skill-Lync’s Physical Modeling Course and gain hands-on experience in Simulink and Simscape. Stay tuned for the next blog, where we’ll explore multi-domain modeling and practical engineering applications! 

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.

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