Title: Design and experimental evaluation of simultaneous fast output sampling feedback control for smart structures

Authors: Deenadayalan Ezhilarasi, Mangalanathan Umapathy, Bijnan Bandyopadhyay

Addresses: Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli, Tamilnadu 620 015, India. ' Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli, Tamilnadu 620 015, India. ' Systems and Control Engineering, Indian Institute of Technology Bombay, Mumbai 400 076, India

Abstract: This paper presents the design and experimental implementation of simultaneous fast output sampling feedback controller to minimise structural vibration using collocated piezoelectric actuator and sensor. The linear dynamic model of piezoelectric bonded cantilever beams is obtained using online recursive least square parameter estimation. A digital control system that consists of simulink modelling software and dSPACE 1104 controller board is used for identification and control. The performance of simultaneous controller is evaluated by considering three structure models. These models are obtained by introducing parameter variation in length and mass of a single cantilever beam structure. The effectiveness of the controller is demonstrated experimentally by exciting the structures at resonance.

Keywords: fast output sampling feedback; simultaneous control; smart structures; system identification; feedback control; structural vibration; piezoelectric actuators; piezoelectric sensors.

DOI: 10.1504/IJAAC.2010.029838

International Journal of Automation and Control, 2010 Vol.4 No.1, pp.42 - 64

Received: 11 Nov 2007
Accepted: 09 Jul 2008
Published online: 02 Dec 2009 *

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