A novel unified modeling method and adaptive sliding mode control based on differential inclusion for hypersonic re-entry vehicle

A novel unified modeling approach is proposed to model the multi-model control system for hypersonic re-entry vehicle in wide flight envelope based on differential inclusion. Then based on the unified control model, an adaptive estimator is deigned to estimate the uncertain and un-modeled dynamics parameters. The real-time compensation for the systematic parameters with weight based on coefficient of variation is implemented to prevent the aged model. Afterwards, a modified adaptive nonsingular terminal sliding mode controller by introducing integral sliding mode surface is devised to realize the high precise robust control for hypersonic re-entry vehicle based on the unified control model with parameter dynamic match. Finally, the numerical simulation results verify the efficiency of the modeling approach and controller.