Pilot Induced Oscillation Suppression Under Off-Nominal Conditions Using L1 Adaptive Control

ZONA Technology, Inc. proposes an R & D effort to develop an adaptive flight control system which can provide near-nominal performance for the aircraft under off-nominal conditions, consequently reduce pilot-vehicle interactions. Furthermore, this adaptive control system is combined with a monitoring system to detect possible Pilot-Induced Oscillation (PIO) while both pilot and controller are adaptively working, in order to avoid PIO and enhance aviation safety. The proposed comprehensive combined control technique aims to reduce the interaction between the adaptive flight system and the pilot control action to a minimal level, when the aircraft experiences system failures, damage and/or upset conditions.