Design of robust controllers for smart structural systems using linear matrix inequalities

Sridhar Sana, Vittal S. Rao

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


This paper presents the design and implementation of a robust controller for a smart structural system. A procedure to derive a minimal linear fractional representation (LFR) for structural systems with uncertain natural frequencies and damping factors is developed using a structured tree decomposition algorithm. Based on this LFR representation, an output feedback robust controller design procedure was derived taking into account the control input constraints for the smart structure. The resulting bilinear matrix inequalities (BLMIs) were solved by the use of a cone complementarity linearization algorithm. Finally, the procedure was experimentally tested on a smart structural test article.

Original languageEnglish
Pages (from-to)2783-2791
Number of pages9
JournalCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
StatePublished - 1999
EventProceedings of the 1999 AIAA/ASME/ASCE/AHS/ASC Structrures, Structural Dynamics, and Materials Conference and Exhibit - St. Louis, MO, USA
Duration: Apr 12 1999Apr 15 1999


Dive into the research topics of 'Design of robust controllers for smart structural systems using linear matrix inequalities'. Together they form a unique fingerprint.

Cite this