Active control of shallow spherical shells using piezoceramic sheets

Sirous K. Ghaedi; Arun K. Misra

doi:10.1117/12.350765

9 June 1999 Active control of shallow spherical shells using piezoceramic sheets

Sirous K. Ghaedi, Arun K. Misra

Proceedings Volume 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems; (1999) https://doi.org/10.1117/12.350765
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

This paper considers analysis and simulation of the dynamics and control of the elastic vibrations of a shallow spherical shell. Active control is carried out using piezoceramic materials (PZT, i.e. Lead Zirconate Titanate) as actuators. By using Galerkin's method and modal discretization, a mathematical model of the dynamics of the spherical shell is developed. The generalized forces produced by the actuators are determined considering the interaction between the shell structure and the PZT actuators via the principle of virtual work. Feedback control is carried out using two methods namely, LQR and Velocity Feedback methods. The effects of unmodeled modes and physical parameter uncertainty on the control performance of the system are investigated.

Citation Download Citation

Sirous K. Ghaedi and Arun K. Misra "Active control of shallow spherical shells using piezoceramic sheets", Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); https://doi.org/10.1117/12.350765

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available