Observer-based synthesis of linear parameter-varying mixed sensitivity controllers

Research output: Contribution to journalResearch articleContributedpeer-review



This article presents a computationally efficient way of synthesizing linear parameter-varying (LPV) controllers. It reviews the possibility of a separate observer and state feedback synthesis with guaranteed performance and shows that a standard mixed sensitivity problem can be solved in this way. The resultant output feedback controller consists of an LPV observer, augmented with dynamic filters to incorporate integral control and roll-off properties, and an LPV state feedback gain. It is thus highly structured, which is beneficial for implementation. Moreover, it does not depend on scheduling parameter rates regardless of whether parameter-dependent Lyapunov matrices are used during synthesis. A representative control design for active flutter suppression on an aeroelastic unmanned aircraft demonstrates the benefits of the proposed method in comparison with state-of-the-art LPV output feedback synthesis.


Original languageEnglish
Pages (from-to)5021-5039
Number of pages19
JournalInternational journal of robust and nonlinear control
Issue number13
Publication statusPublished - 7 Jul 2020

External IDs

Scopus 85087631371
ORCID /0000-0001-6734-704X/work/142235716



  • control synthesis algorithm, coprime factorization, flutter suppression, linear parameter-varying control, observer