The most significant theoretical accomplishment has been the development of a new approach for dealing with control limits and nonlinearities in adaptive systems. This approach both prevents the Maptire system from doing harm to an otherwise stable system, and also allows adaptation to continue while the control is saturated. We regard this as a major step towards flight certification of adaptive controllers. The approach is more general in that it permits a broad class of input nonlinearities, including such effects as discrete and bang/bang control. In the area of output feedback, we continue to refine our curlier work, and have begun to take steps in the direction of decentralized adaptive systems in a state feedback setting. Our most significant interactions have been with NASA Marshall and NASA Ames. In particular, we arc fully exploiting our research in limited authority adaptive control in the areas of autopilot design for launch vehicles, and propulsion control for commercial aircraft subject to partial or total loss of conventional flight control.
Research in Neural Network Based Adaptive Control
2000
8 pages
Report
Keine Angabe
Englisch
Avionics , Neural nets , Adaptive control systems , Flight control systems , Input , Output , Control , Setting(Adjusting) , Stability , Commercial aircraft , Propulsion systems , Nonlinear systems , Flight , Limitations , Feedback , Adaptive systems , Automatic pilots , Launch vehicles , Decentralization
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