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Smart Structures and Systems
  Volume 8, Number 4, October 2011 , pages 367-384

Design and implementation of fast output sampling feedback control for shape memory alloy actuated structures
K. Dhanalakshmi, M. Umapathy, D. Ezhilarasi and B. Bandyopadhyay

    This paper presents the design and experimental evaluation of fast output sampling feedback controller to minimize structural vibration of a cantilever beam using Shape Memory Alloy (SMA) wires as control actuators and piezoceramics as sensor and disturbance actuator. Linear dynamic models of the smart cantilever beam are obtained using online recursive least square parameter estimation. A digital control system that consists of Simulink modeling software and dSPACE DS1104 controller board is used for identification and control. The effectiveness of the controller is shown through simulation and experimentation by exciting the structure at resonance.
Key Words
    shape memory alloy actuator; smart structure; system identification; active vibration control; fast output sampling feedback control.
K. Dhanalakshmi, M. Umapathy and D. Ezhilarasi : Department of Instrumentation and Control Engineering, National Institute of Technology,Tiruchirappalli - 620 015, India
B. Bandyopadhyay : Systems and Control Engineering, Indian Institute of Technology Bombay, Mumbai - 400076, India

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