Adaptive attitude controller design for unmanned helicopter

In the view of unmanned helicopter is a nonlinear system with highly parameter perturbation and complex system dynamics which are unstable, the work presented in this paper provides an adaptive control strategy for unmanned helicopter attitude tracking control. The proposed strategy is designed with signal filter and extend state observer associated with sliding-mode control. The compound control strategy of unmanned helicopter is validated through a simulation experiment, the simulation results indicate that the controller has strong robustness and adaptive ability.