Shock and Vibration

Shock and Vibration / 2010 / Article

Open Access

Volume 17 |Article ID 805823 |

A. Nandi, S. Neogy, "Performance Analysis of a Hybrid One-Sided Magnetic Exciter Mounted on a Piezoelectric Stack", Shock and Vibration, vol. 17, Article ID 805823, 11 pages, 2010.

Performance Analysis of a Hybrid One-Sided Magnetic Exciter Mounted on a Piezoelectric Stack

Received27 Aug 2008
Revised02 Jun 2009


The present work proposes a non-contact hybrid exciter especially useful for harmonic excitation of lightly damped structures/rotors. In the proposed exciter an electromagnet is placed on a piezoelectric stack and the extension of the piezoelectric stack is made almost equal to the displacement of the structure using a simple tracking control. This largely eliminates stiffness coupling between the structure/rotor and the exciter and non-linearity in the excitation force due to the vibration of the structure/rotor. The stiffness and inertia of the piezoelectric stack is considered in the analysis. A SIMULINK model of the combined structure and the exciter is developed for a full time-domain simulation of the excitation system.

Copyright © 2010 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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