Active feedback control of multiple waves in helicopter gearbox support struts

Mahapatra, Roy D and Gopalakrishnan, S and Balachandran, B (2001) Active feedback control of multiple waves in helicopter gearbox support struts. In: Smart Materials and Structures, 10 (5). pp. 1046-1048.

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Abstract

A study on active control of multiple waves in finite-length struts is presented. Modeling of such an active strut system that supports the gearbox over the helicopter fuselage is focused on in the study. An integrated mechanics model with feedback control of waves called the active spectral element model (ASEM) is used. The formulation allows one to account for coupling between longitudinal and flexural waves, dynamics of point or distributed sensors and dynamics of point or distributed actuators. Effects of finite strut and actuator dynamics are taken into account. Numerical investigations into collocated as well as non-collocated velocity feedback control of multiple axial, flexural and axial–flexural coupled waves are presented. Efficient computation using ASEM provides a powerful tool to study the sensitivity of the feedback parameters and various sensor–actuator configurations.

Item Type:	Journal Article
Publication:	Smart Materials and Structures
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	17 Jun 2006
Last Modified:	19 Sep 2010 04:29
URI:	http://eprints.iisc.ac.in/id/eprint/7651

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