Attitude Compensation Control for Quadrotor Under Partial Loss of Actuator Effectiveness

Abstract

In this paper, an augmented fault tolerant attitude control system is presented to address the problem of attitude adjustment for a quad-rotor unmanned aerial vehicle with inertia parameter uncertainties, the external disturbance and the partial loss of actuator effectiveness. To tackle system uncertainty and actuator faults, a fixed time compensation controller is developed based on adaptation mechanism combing with a monitor strategy and Nussbaum gain technique. Robust compensation algorithms under the proposed closed loop system structure are derived in the sense of Lyapunov stability analysis such that the attitude tracking-errors converge to a prescribed compact set in a fixed time. Finally, the simulation results demonstrate the effectiveness of the proposed controller.