“…During the quadrotor entry process, the attitude adjustment of the quadrotor involves attitude maneuvering through a wide range of physical limitation, lumped external disturbances, and system parameter uncertainties [1][2][3]. Many advanced flight control methods have been proposed for the quadrotor's attitude control in order to improve the performance of the control system, such as adaptive backstepping method [4,5], adaptive compensation control [6][7][8], sliding-mode control strategy [9,10], and linearization control technique [11,12].…”