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Active Disturbance Rejection Control (ADRC) is designed for the flight attitude control. It outperforms PD control in the classical time- and frequency-domain simultaneously. With regard to the structured uncertainties in the aerodynamics, two main uncertain factors, resume moment coefficient and control moment coefficient, are separated from the certain part of the closed-loop system by μ analysis...
A direct adaptive fuzzy predictive control method is presented for attitude tracking of satellites with model uncertainty and external disturbances in this paper. Firstly, a nonlinear predictive control law for general mechanical systems is derived. Then, the error in predictive control law from system model uncertainties are approximated and compensated by constructed adaptive fuzzy logic systems,...
Based on input-output stability theory, a multi-input multi-output indirect adaptive fuzzy tracking control method for satellite attitude systems with parametric uncertainty and external disturbance is presented. First, a nonlinear controller is designed based on the satellite precision model, and stability of the closed-loop system is analyzed; then, because of contained the parametric uncertainty...
To track the reference attitude angles and angular accelerations in the presence of strong uncertainties and disturbances, a new robust generalized predictive control (GPC) law is presented for a near-space hypersonic vehicle (NHV). The control law consists of the optimal GPC law and radius basis function disturbance observer (RBFDO). The output prediction defined on finite horizon is carried out...
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