Fuzzy robust tracking control for aerospace vehicle's reentry attitude based on fuzzy feedforward

This paper proposes a new design method for fuzzy robust tracking control, which is used for aerospace vehicle's (ASV) attitude angles tracking problem during the phase of reentry. The T-S fuzzy model based uncertain reentry attitude dynamic systems with external disturbance is considered, based on which, the tracking errors of the attitude angles are studied and the constraints of the tracking errors' exponential stability are obtained by using fuzzy feedforward. Under the condition of stabilization control being the base of tracking control, fuzzy feedforward tracking controller and fuzzy stabilization controller with decay rate η are designed, and they can be solved by using LMI (linear matrix inequalities) and FLC (fuzzy logic control) tools of Matlab. The simulation results demonstrate the effectivity of the proposed method.