Quadcopter unmanned aerial vehicles (UAVs) are being used more and more for surveillance, disaster response, logistics, and smart infrastructure because they are easy to move and cheap. Nonetheless, attaining dependable real-time path tracking amidst nonlinear dynamics and external perturbations continues to be a significant challenge. This paper puts forward a hybrid Fuzzy-PID controller that combines fuzzy logic-based adaptive gain tuning with traditional PID control to enhance trajectory tracking performance. The methodology encompasses the modeling of the six-degree-of-freedom quadcopter dynamics, the design of a fuzzy inference system for adaptive gain adjustment, and its integration with PID within a closed-loop control framework. We ran simulation tests in MATLAB/Simulink for several paths (straight line, circle, and square) while there were wind disturbances and sensor noise. The results show that the Fuzzy-PID controller works much better than both classical PID and fuzzy-only controllers. It has a lower RMSE, converges faster, has less overshoot, and smoother control input signals. The suggested method is very strong and adaptable, which makes it a good choice for real-time UAV operations.
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