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Nonlinear controller tuning based on a sequence of identifications of linearized time-varying models

Jonas Sjöberg (Institutionen för signaler och system, Mekatronik) ; Per-Olof Gutman (Institutionen för signaler och system, Mekatronik) ; Mukul Agarwal (Institutionen för signaler och system, Mekatronik) ; Mike Bax (Institutionen för signaler och system, Mekatronik)
Control Engineering Practice (0967-0661). Vol. 17 (2009), 2, p. 311-321.
[Artikel, refereegranskad vetenskaplig]

A novel algorithm for tuning controllers for nonlinear plants is presented. The algorithm iteratively minimizes a criterion of the control performance. In each iteration one experiment is performed with a reference signal slightly different from the previous reference signal. The input--output signals of the plant are used to identify a linear time-varying model of the plant which is then used to calculate an update of the controller parameters. The algorithm requires an initial feedback controller that stabilizes the closed loop for the desired reference signal and in its vicinity, and that the closed-loop outputs are similar for the previous and current reference signals. The tuning algorithm is successfully tested on a laboratory set-up of the Furuta pendulum.



Denna post skapades 2009-03-08. Senast ändrad 2017-06-28.
CPL Pubid: 91221

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Mekatronik (2005-2017)

Ämnesområden

Reglerteknik

Chalmers infrastruktur