Identification of system, observer, and controller from closed-loop experimental dataThis paper considers the identification problem of a system operating in closed-loop with an existing feedback controller. The closed-loop system is excited by a known excitation signal, and the resulting time histories of the closed-loop system response and the feedback signal are measured. From the time history data, the algorithm computes the Markov parameters of a closed-loop observer, from which the Markov parameters of the individual open-loop plant, observer, and controller are recovered. A state space model of the open-loop plant and the gain matrices for the controller and the observer are then realized. The results of the paper are demonstrated by an example using actual aircraft flutter test data.
Document ID
19920072673
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Juang, Jer-Nan (NASA Langley Research Center Hampton, VA, United States)
Phan, Minh (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Cybernetics
Report/Patent Number
AIAA PAPER 92-4620
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference