Decentralized Controller Design for Smart Structural Systems

Pengxiang Liu, Vittal S. Rao

Research output: Contribution to journalConference articlepeer-review


In this paper, we show how to design decentralized controllers for smart structural systems to achieve multiple objectives associated with performances defined by H2 or H norm, robust stability for model uncertainty, and limited actuator authority. The decentralized controller is designed in a sequential procedure for each control loop by solving synthesis conditions represented in terms of linear matrix inequalities (LMIs). The simultaneous design of decentralized controller, formulated as a non-convex minimization problem, is also discussed. The proposed design method was experimentally tested on a three-mass structure with three control loops.

Original languageEnglish
Pages (from-to)283-293
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2003
EventPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Smart Structures and Materials 2003 Modeling, Signal Processing, and Control - San Diego, CA, United States
Duration: Mar 3 2003Mar 6 2003


  • Decentralized control
  • Limited actuator inputs
  • Linear matrix inequalities
  • Multi-objective control
  • Sequential design
  • Simultaneous design of decentralized controller


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