document: Scheduling schemes for an integrated flight and propulsion control system We describe two schemes for scheduling an integrated flight and propulsion control system for an experimental vertical/short take-off and landing -LRB- V/STOL -RRB- aircraft concept in the acceleration from hover -LRB- 0-120 kn -RRB- flight phase . Multivariable integrated flight and propulsion controllers are designed at several points over the V/STOL envelope and implemented as exact plant observers with state feedback . In the first scheduling scheme , the values of the state feedback and observer gain matrices are interpolated between the fixed-point designs as a function of aircraft speed . In the second approach , the control signals produced by the different fixed-point controllers are blended , allowing a significant reduction in the order of the scheduled controllers . Both scheduling schemes are shown in nonlinear simulation to provide excellent handling qualities as the aircraft accelerates from the hover
doc_bio_tags: B O O O O O O B I O O O O O O B O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O B I O O O O B O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O O O O
extractive_keyphrases: propulsion control scheduling observers state feedback
abstractive_keyphrases: vertical short take-off landing aircraft vstol aircraft flight control multivariable control systems fixed-point controllers