Masters Theses

Headman Sanei

Keywords and Phrases

Annular Disk; Electromechanical Model; Energy Harvesting; Finite Element; Piezoelectric; Traveling Load

Abstract

“This study proposes a novel piezoelectric energy harvester for rotary motion applications. It is based on an annular unimorph plate, mounted on a shaft rotating at a constant angular velocity, under constant amplitude point-wise force. The mathematical model and the analysis was proposed for the inverse problem of a rotating disk under a static stationary force. The disk, however, is assumed to be stationary subjected to a traveling force. The distributed parameter electromechanical equations governing the behavior of the system are provided in closed-form, incorporating both an AC and a simple rectifier circuit. The performance of the energy harvester was compared in both the AC and the rectifier circuits. Multi-modal voltage and vibration frequency responses of the energy harvester have been illustrated and discussed in detail. The performance of the modal coupling terms in both the mechanical and the electrical equations have been investigated. Based on the electromechanical coupling terms, a scheme for prevention of charge cancellation in non-axisymmetric vibration has been proposed. A multiple electrode pattern was used to overcome the charge cancellation. In addition, the prevention of charge cancellation was shown to require a knowledge of the vibratory modes of the system rather than the simple knowledge of the system's dependence on the boundary conditions”--Abstract, page iv.

Advisor(s)

Stutts, Daniel S.

Committee Member(s)

Chandrashekhara, K.
Dharani, Lokeswarappa R.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2013

Journal article titles appearing in thesis/dissertation

A Rotary Displacement Forced Piezoelectric Energy Harvester

Pagination

ix, 44 pages

Note about bibliography

Includes bibliographic references (pages 41-43).

Rights

© 2013 Headman Sanei, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 12048

Electronic OCLC #

1313117302

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