Enhanced Extended State Observer Based on Trajectory Linearization Control for External and Internal Disturbances
This paper proposes a novel hybrid control framework by combing enhanced extended state observer with trajectory linearization control for air vehicle acceleration tracking problems. First, based on the tracking error dynamics derived by Taylor expansion for the original nonlinear system along the desired trajectory, a feedback linearization-based control law is designed to stabilize a linear time-varying system. To reduce the controller performance sensitivity to uncertainties, with partial model information, an enhanced extended state observer is constructed to estimate the tracking error vector, as well as the uncertainties in an integrated manner. The closed-loop stability of the system under the proposed compound scheme is established. Both numerical simulation studies and an application example of air vehicle acceleration autopilot design demonstrate the feasibility and efficacy of the proposed method.
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Robust state-feedback controller for linear parameter-varying systems with time-invariant uncertainties
H. Asrari, I. Mohammadzaman *, F. Allahverdizadeh
Scientia Iranica, May-June 2023 -
Design of an nonlinear extended state observer to estimate unmeasurable information on the problem of flying objects guidance
Mahsa Javaheri Pour, AhmadReza Vali *, Vahid Behnam Gol, Firouz Allahverdizadeh
Journal of Space Science and Technology,