Performance of optical sensors in the control of flexible structures

Nezih Mrad, Robert G. Melton, Bohdan T. Kulakowski

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


This paper demonstrates the use of embedded single-mode optical fibers in the active control of smart structures. The experimental prototype structure, a composite lattice configuration fashioned from graphite/bismaleimide laminate, exhibits complex bending and torsional modes, and forms a sub-scale model of a similar structure being analyzed at the Air Force Astronautics Laboratory. Simulations that include effects of Gaussian observation and process noise on a linear quadratic regulator/ loop transfer recovery (LQG/LTR) controller for active vibration damping are presented. The fiber-optic sensor demonstrates advantages over conventional strain gage sensors in terms of reduced sensitivity to sensor placement, reduced problems with observation and control spillovers, and improved control stability.

Original languageEnglish (US)
Pages (from-to)920-928
Number of pages9
JournalJournal of Intelligent Material Systems and Structures
Issue number11
StatePublished - Nov 1997

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanical Engineering


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