|Finite-time H∞ Adaptive Fault-Tolerant Control for Wing Flutter of Reentry Vehicle Subject to Input Saturation
Ming-Zhou Gao and Guo-Ping Cai*
International Journal of Control, Automation, and Systems, vol. 15, no. 1, pp.362-374, 2017
Abstract : "In current study for wing flutter of reentry vehicle, the effect of input saturation to wing flutter is rarely
considered and few of the fault-tolerant control problem is taken into account. In this paper, we use the radial basis
function neural network and the finite-time adaptive fault-tolerant control technique to deal with the wing flutter
problem, which is subject to input saturation, parameter uncertainties and external disturbances. Sensor and actuator
faults are both considered in the control design. Firstly, an optimal flight trajectory of reentry vehicle is designed
using the conjugate gradient method, so as to decrease the aerodynamic heating rate and temperature on the surface
of the reentry vehicle. Then based on the trajectory optimization, we ignore the effect of temperature, and build
up the motion equation of wing flutter. Finally, a finite-time H¥ adaptive fault-tolerant controller is introduced.
Simulation results indicate that, the optimized trajectory designed may decrease the aerodynamic heating rate of
the reentry vehicle; the designed fault-tolerant controller can effectively deal with the faults in the system and can
promptly suppress the wing flutter as well."
Fault-tolerant control, finite-time, input saturation, reentry vehicle, wing flutter.
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