“…Attitude control system is no exception, and its nonlinear dynamics must also be considered [2]. Various nonlinear control algorithms, such as fault tolerant control [3][4][5], that studied H ∞ fault tolerant attitude control of satellite with actuator and sensor faults based on observer; fuzzy adaptive algorithm [6,7]; variable structure control [8]; and sliding control [9,10], that studied the fixed time integral sliding mode control for the attitude stability of the quadrotor unmanned aerial vehicle with actuator failure; etc., have been proposed for solving the attitude control problem for spacecraft. However, so far, few scholars have studied the attitude control of aircraft by using ADRC; it is rare to study this problem in combination with the back-stepping method.…”