Damage-mitigating control of hypersonic flight vehicle based on prescribed performance

摘要

The goal of damage-mitigating control is to enhance the service life of complex mechanical systems without any significant performance loss. A prescribed performance damage-mitigating controller is designed in this paper to mitigate the damage during longitudinal tracking control of a generic hypersonic flight vehicle. Based on the analysis of stress conditions of wing and construction of damage accumulation model, a hierarchical damage-mitigating controller is designed using prescribed performance which ensures the robustness of performance even after damage-mitigation. Simulation results are presented to show that after damage information feedback, the dynamic performance of the flight is maintained and the damage accumulation is vastly reduced.