NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
An implementable digital adaptive flight controller designed using stabilized single-stage algorithmsAn explicit adaptive controller, which makes direct use of on-line parameter identification, has been developed and applied to both the linearized and nonlinear equations of motion for the F-8 aircraft. This controller is composed of an on-line weighted least squares parameter identifier, a Kalman state filter, and a real model following control law designed using single-stage performance indices. The corresponding control gains are readily adjustable in accordance with parameter changes to ensure asymptotic stability if the conditions of perfect model following are satisfied, and stability in the sense of boundedness otherwise. Simulation experiments with realistic measurement noise indicate that the controller was effective in compensating for parameter variations and capable of rapid recovery from a set of erroneous initial parameter estimates which defined a set of destabilizing gains.
Document ID
19780028451
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Alag, G.
(Rensselaer Polytechnic Inst. Troy, NY, United States)
Kaufman, H.
(Rensselaer Polytechnic Institute, Troy, N.Y., United States)
Date Acquired
August 9, 2013
Publication Date
October 1, 1977
Publication Information
Publication: IEEE Transactions on Automatic Control
Volume: AC-22
Subject Category
Aircraft Stability And Control
Accession Number
78A12360
Funding Number(s)
CONTRACT_GRANT: NGR-33-018-183
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available