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Aerospace Design Group
Aerospace Design Group
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ItemCoordinated Decentralized Adaptive Output Feedback Control of Interconnected Systems(Georgia Institute of Technology, 2004-06) Hovakimyan, Naira ; Lavretsky, Eugene ; Yang, Bong-Jun ; Calise, Anthony J.A decentralized adaptive output feedback control design is proposed for large-scale interconnected systems. It is assumed that all the controllers share prior information about the system reference models. A linearly parameterized neural network is introduced for each subsystem to partially cancel the effect of the interconnections on tracking performance. Boundedness of error signals is shown through Lyapunov's direct method.
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ItemExperimental Validation of an Augmenting Approach to Adaptive Control of Uncertain Nonlinear Systems(Georgia Institute of Technology, 2003-08) Yang, Bong-Jun ; Hovakimyan, Naira ; Calise, Anthony J. ; Craig, James I.A method of adaptive output feedback design for uncertain nonlinear systems is presented. The development is in a form that is suitable for augmenting a linear controller. The approach is applicable to non-affine, non-minimum phase systems having parametric and dynamic uncertainties. A requirement is that the non-minimum phase zeros are represented to a sufficient accuracy in the linear controller design. The approach has been experimentally validated using a 3-disk torsional pendulum and an inverted pendulum.