Fault tolerant incremental attitude control using online parameter estimation for a multicopter system

This paper presents an attitude tracking incremental controller using a nonlinear reference model for a multicopter. The incremental controller is more robust compared to conventional nonlinear dynamic inversion controller against uncertainties due to its reduced model dependence. In order to further ensure robustness of the controller in the presence of actuator faults, the control effectiveness matrix is estimated online using gradient descent method. Furthermore, to achieve physically feasible trajectories, the gains of the nonlinear reference model are modified to account for the reduced achievable moment space.     «

This paper presents an attitude tracking incremental controller using a nonlinear reference model for a multicopter. The incremental controller is more robust compared to conventional nonlinear dynamic inversion controller against uncertainties due to its reduced model dependence. In order to further ensure robustness of the controller in the presence of actuator faults, the control effectiveness matrix is estimated online using gradient descent method. Furthermore, to achieve physically feasibl...     »