Abstract
The problem of tracking a desired trajectory for a nonlinear underactuated autonomous underwater vehicles (AUV's) model with only three actuators is addressed. This paper proposes to compute offline open loop trajectories exploiting the liouvillian character of the nonlinear model. A flatness-based control approach is applied in the system linearized around the planned trajectories, which allows to obtain an incremental feedback controller to ensure a stabilization of the trajectory's tracking error. In order to validate the proposed tracking control, simulation results are presented and discussed.
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