Smart Structures and Systems

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Experimental evaluation of discrete sliding mode controller for piezo actuated structure with multisensor data fusion

  • Arunshankar, J. (Department of Instrumentation and Control Systems Engineering, PSG College of Technology) ;
  • Umapathy, M. (Department of Instrumentation and Control Engineering, National Institute of Technology) ;
  • Bandhopadhyay, B. (Systems and Control Engineering, Indian Institute of Technology Bombay)
  • Received : 2012.08.30
  • Accepted : 2012.11.12
  • Published : 2013.06.25
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Abstract

This paper evaluates the closed loop performance of the reaching law based discrete sliding mode controller with multisensor data fusion (MSDF) in real time, by controlling the first two vibrating modes of a piezo actuated structure. The vibration is measured using two homogeneous piezo sensors. The states estimated from sensors output are fused. Four fusion algorithms are considered, whose output is used to control the structural vibration. The controller is designed using a model identified through linear Recursive Least Square (RLS) method, based on ARX model. Improved vibration suppression is achieved with fused data as compared to single sensor. The experimental evaluation of the closed loop performance of sliding mode controller with data fusion applied to piezo actuated structure is the contribution in this work.

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References

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