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The European Physical Journal Special Topics

, Volume 222, Issue 7, pp 1541–1551 | Cite as

Adaptive fuzzy sliding mode control of smart structures

  • W.M. Bessa
  • A.S. de Paula
  • M.A. Savi
Regular Article

Abstract

Smart structures are usually designed with a stimulus-response mechanism to mimic the autoregulatory process of living systems. In this work, in order to simulate this natural and self-adjustable behavior, an adaptive fuzzy sliding mode controller is applied to a shape memory two-bar truss. This structural system exhibits both constitutive and geometrical nonlinearities presenting the snap-through behavior and chaotic dynamics. On this basis, a variable structure controller is employed for vibration suppression in the chaotic smart truss. The control scheme is primarily based on sliding mode methodology and enhanced by an adaptive fuzzy inference system to cope with modeling inaccuracies and external disturbances. The robustness of this approach against both structured and unstructured uncertainties enables the adoption of simple constitutive models for control purposes. The overall control system performance is evaluated by means of numerical simulations, promoting vibration reduction and avoiding snap-through behavior.

Keywords

Shape Memory Shape Memory Alloy European Physical Journal Special Topic Energy Harvest Smart Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences and Springer 2013

Authors and Affiliations

  1. 1.Universidade Federal do Rio Grande do Norte, Departamento de Engenharia Mecânica, Campus Universitário Lagoa NovaNatalBrazil
  2. 2.Universidade de Brasília, Departamento de Engenharia MecânicaBrasíliaBrazil
  3. 3.Universidade Federal do Rio de Janeiro, Departamento de Engenharia MecânicaRio de JaneiroBrazil

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