Popis: |
The present study addresses two representative model-free control strategies namely, model-free intelligent PID (i-PID) and type-2 fuzzy adaptive PID in control of a quadrotor type vertical take-off and landing (VTOL) unmanned aerial vehicle. The objectives of this study are i) to summarize the modeling and flight control methods of quadrotor in some classifications, ii) to investigate merits and demerits of model-free control strategies, iii) to compare the control performance in terms of some quantitative performance criteria. The results illustrate the performance of such methodologies applied to the quadrotor system. |