Experimental implementation of spatial H control on a piezoelectric-laminate beam

Dunant Halim, S. O.Reza Moheimani

Research output: Journal PublicationArticlepeer-review

46 Citations (Scopus)


This paper is aimed to develop a feedback controller that suppresses vibration of flexible structures. The controller is designed to minimize the spatial H norm of the closed-loop system. This technique guarantees average reduction of vibration throughout the entire structure. A feedthrough term is incorporated into the truncated flexible-structure model to compensate for the neglected dynamics in the finite-dimensional model. Adding the feedthrough term reduces the uncertainty associated with the truncated model, which is instrumental in ensuring the robustness of the closed-loop system. The controller is applied to a simply-supported piezoelectric-laminate beam and is validated experimentally to show the effectiveness of the proposed controller in suppressing structural vibration. It is shown that the spatial H control has an advantage over the pointwise H control in minimizing the vibration of the entire structure. This spatial H control methodology can also be applied to more general structural vibration suppression problems.

Original languageEnglish
Pages (from-to)346-356
Number of pages11
JournalIEEE/ASME Transactions on Mechatronics
Issue number3
Publication statusPublished - Sept 2002
Externally publishedYes


  • Flexible structures
  • Piezoelectric actuators
  • Piezoelectric sensors
  • Smart structures
  • Spatial control
  • Vibration control

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


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