Identification and control: Joint input design and H-infinity state feedback with ellipsoidal parametric uncertainty via LMIs

• One obstacle in connecting robust control with models generated from prediction error identification is that very few control design methods are able to directly cope with the ellipsoidal parametric uncertainty regions that are generated by such identification methods. In this contribution we present a joint robust state feedback control/input design procedure which guarantees stability and prescribed closed-loop performance using models identified from experimental data. This means that given H-infinity specifications on the closed-loop transfer function are translated into sufficient requirements on the input signal spectrum used to identify the process. The condition takes the form of a linear matrix inequality.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)

Nyckelord

identification for robust control

H-infinity identification

least-squares identification

robust identification

confidence ellipsoids

robustness to uncertainties

parameter uncertainty

uncertain linear systems

LMI optimization

Automatic control

Reglerteknik

SRA - ICT

SRA - Informations- och kommunikationsteknik

Publikations- och innehållstyp

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