Multiple model adaptive controller for the STOL F-15 with sensor/actuator failures

A multiple-model adaptive controller that provides for reconfiguration in response to sensor and/or actuator failures is developed for an approach and landing profile for the short-take-off-and-landing (STOL) F-15 aircraft. Each elemental controller within the multiple model controller is based on a command-generator-tracker/proportional-plus-integral/Kalman-filter design employing reduced-order models, and each assumes a particular system status: no failures or a single failed surface or sensor. Filter residual monitoring is used as the mechanism for selecting the appropriate weighting coefficients for blending the outputs of the elemental controllers. The entire controller is evaluated against a higher order truth model with a selected failure, and the process is repeated for all failure modes of interest