Unknown inputs observers for a class of nonlinear systems

International audienceA high gain observer is proposed for a class of multi-output nonlinearsystems with unknown inputs in order to simultaneously estimate the whole stateas well as the unknown inputs. The gain of this observer does not require theresolution of any dynamical system and is explicitly given. Moreover, its tuningis reduced to the choice of two real numbers. The performances of the proposedobserver are demonstrated in simulation through an illustrative exampl