This paper proposes a new adaptive control scheme for uncertain non-canonical nonlinear aircraft systems, which expands the capacity of linearization-based adaptive control from local to semi-global. Local linearization-based design has been used for adaptive control of non-canonical nonlinear aircraft systems, due to certain desired capacity to handle complexity of non-canonical aircraft system dynamics for which most existing nonlinear control methods are not applicable. As a benchmark study, this paper addresses a general longitudinal dynamic motion of rigid aircraft systems in a non-canonical form with unparametrizable uncertainties. A semi-global linearization-based control method is developed for such aircraft systems by constructing a new reparametrization procedure based on T-S fuzzy system approximation using local linearized models and a relative degree formulation, and then developing an adaptive controller to ensure closed-loop stability and asymptotic output tracking for T-S fuzzy approximation aircraft systems. Simulation results verify the effectiveness of the proposed control scheme.
Adaptive control of uncertain nonlinear aircraft systems using combined linearized models
01.08.2016
233205 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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