Design and evaluation of FTFC scheme for sensor loss detection based on RECOVER benchmark

摘要

The work proposes a study on fault tolerant flight control of the GARTEUR RECOVER benchmark aircraft model. Instead of using control surface failure scenarios, a sensor loss detection scenario is defined in this benchmark for the first time, to demonstrate the proposed fault tolerant flight control capability. Therefore, the model-based fault tolerant flight control is well posed for this failure scenario, which is different from traditional sensor failure schemes relying on sensor redundancy and consolidation detection. The proposed fault tolerant flight control scheme is simulated and evaluated in various testing manoeuvres during a landing process. In this scheme, a fault estimator based upon ℋ−/ℋ∞ robustness index is utilised to estimate the loss detection. A sensor fault compensator is also included to restore the fault-free sensor measurement on-line.