A big part of my work is making robots behave the same in the real world as they do in simulation. For a recent UAV project at BrainSwarm Robotics, that meant building a Flight Dynamics Model (FDM) for a quadcopter in Gazebo and then proving it against real hardware.
The model
The FDM captures the multi-rotor dynamics with enough fidelity to model real flight behaviour, not just a rough approximation. Getting the mass, thrust curves and control loop right is what lets the simulated craft and the physical one share the same controller.
Synchronized flight
The milestone was synchronized flight: the virtual twin and the real quadcopter flying together off the same commands. That is the practical proof of Sim2Real transfer for UAV control, and it means new control strategies can be developed and validated in simulation before they ever touch hardware.
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