Fractional-order proportional-integral-derivative linear active disturbance rejection control design and parameter optimization for hypersonic vehicles with actuator faults

The hypersonic vehicle model is characterized by strong coupling, nonlinearity, and acute changes of aerodynamic parameters, which are challenging for control system design. This study investigates a novel compound scheme that combines the advantages Fractional-Order Proportional-Integral-Derivative (FOPID) controller Linear Active Disturbance Rejection Control (LADRC) reentry flight vehicles with actuator faults. First, given has adjustable frequency-domain analysis-method-based parameter tuning strategy utilized FOPID LADRC method (FOLADRC). Then, influences on anti-disturbance capability FOLADRC-based closed-loop analyzed. Finally, simulation results indicate proposed FOLADRC approach satisfactory performance in terms rapidity, accuracy, robustness under normal operating condition fault condition.