Wenquan Gong

TL;DR: Two fixed-time fault-tolerant control schemes are developed to address the problem of attitude stabilization of a quadrotor unmanned aerial vehicle with external disturbances and actuator faults and are proved to be stable theoretically and strictly in the sense of Lyapunov.

TL;DR: In this paper, a study of the appointed fixed time control problem is presented for the quadrotor unmanned aerial vehicle attitude control system subject to external disturbances, where a sliding mode observer is first established to estimate the external disturbances within the appointed settling time.

TL;DR: This work presents a novel control strategy for the trajectory tracking control of the quadrotor unmanned aerial vehicle (UAV) with parameter uncertainties and external unknown disturbances, and the fast terminal sliding mode-based improved dynamic surface control (DSC) approaches are developed.

TL;DR: This work addresses the fault tolerant attitude stabilization control problem of a quad-rotor UAV utilizing the integral-type sliding mode control strategy, in the presence of external disturbances and actuator faults using a simple PD-type controller as a stepping stone.

TL;DR: A novel terminal sliding mode control and observer based fault-tolerant controller is proposed to guarantee the fixed-time stability of the closed-loop attitude tracking control system.