Abstract
The position tracking problem of a vertical take-off and landing(VTOL) aircraft whose input has a coupling effect was studied, and a control strategy which has a two closed-loop was proposed. To simplify the controller design, a converted algorithm which aim to a underactuated system is used to convert the input of the system, and the output tracking system was converted intu the control of out-loop which is position loop and the control of inner loop which is a angle loop. The position substem was controlled using the optimal controller and the angle error substem was controlled using the sliding mode controller. Simulation results indicate that the proposed control strategy has the better effectiveness to solve the VTOL aircraft trajectory tracking problem.
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