Multiple model adaptive control for the NASA F-8 DFBW aircraft

The purpose of the presentation is to discuss the results obtained in the design of a command augmentation system (CAS) for the NASA F-8C Digital-Fly-By-Wire Aircraft using the Multiple Model Adaptive Control (MMAC) method. The design of the adaptive stochastic regulator was discussed previously in references [1] and [2]; in the stochastic regulator design it is assumed that the purpose of the control system is to return the aircraft to equilibrium flight following any initial disturbance. However, the regulator design is not suitable for incorporating pilot command inputs for longitudinal and lateral maneuvers. Thus it has to be modified. Two diffierent approches were used to design the longitudinal and lateral command augmentation systems (CAS).