Modeling Nonlinear Systems: Dry Friction Example Using the Sign Function

In this video, we enter the world of nonlinear system modeling by examining a common and important phenomenon: dry friction.

You’ll learn how to:

1- Recognize and model nonlinearities in mechanical systems

2- Understand how Coulomb (dry) friction impacts system dynamics

3- Use the sign function to express nonlinearity mathematically

This example shows how simple modifications — like adding friction — can significantly affect the behavior of a dynamic system, and why linear models aren’t always enough.

🎓 This is essential knowledge for anyone working in control design, robotics, or mechatronic systems.

📺 Part of the full physics-based modeling series → https://youtube.com/playlist?list=PLQYLkNZKGkqzWX9hVjxGP_zxd66VTlicm&si=Hc1StPftLebmzcig

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Видео Modeling Nonlinear Systems: Dry Friction Example Using the Sign Function канала Tohid Sardarmehni