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Algebraic separation in realizing a linear state feedback control law by means of an adaptive observer

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1 Author(s)
Kreisselmeier, G. ; Institut für Dynamik der Flugsysteme, Oberfaffenhofen, Germany

Based on a novel adaptive observer, which does not require signal boundedness in its stability proof, an algebraic separation property of linear state feedback control and adaptive state observation is established. This means, whenever a linear, stabilizing state feedback control law is realized with the state replaced by the state estimate of the given stable adaptive observer, then the resulting nonlinear control system is also globally asymptotically Lyapunov stable with respect to the initial state and parameter observation error of the adaptive observer. In particular, no assumptions on the system dynamics nor on the speed of the adaptation are made.

Published in:

Automatic Control, IEEE Transactions on  (Volume:25 ,  Issue: 2 )