Shape Control of a Beam using Piezoelectric Actuators
Abstract
This paper presents the analytical and experimental results on optimal placement of piezoceramic actuators for shape control of beam structures. The objective is to determine the optimum piezoceramic actuator locations and voltages to minimize the error between the desired shape and the achieved shape. The analytical model for predicting beam deformation due to a piezoelectric actuator is based on the Euler–Bernoulli model. The cost function has fifth-order polynomials in the actuator locations and second-order polynomials in actuator voltages. This difference resulted in difficulty in simultaneous optimization of actuator locations and voltages. Using embedded Nader and Mead simplex algorithms to separately optimize actuator locations and voltages was found to produce reliable results, converging to the same optimum solution for a variety of initial conditions. Experimental results show that the analytical model provides a reasonable prediction of actuator performance at low input voltage, but does not account for the nonlinear behavior of the piezoceramic and effects of hysteresis.
Description
The article of record as published may be found at http://dx.doi.org/10.1088/0964-1726/8/6/303
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, is not copyrighted in the U.S.Related items
Showing items related by title, author, creator and subject.
-
Performance and optimal placement of piezoceramic actuators for shape control of a cantilever beam
Treanor, Kirk E. (Monterey, California. Naval Postgraduate School, 1996-06);Shape control of spaceborne antennas can provide the ability to correct for effects such as thermal distortion and manufacturing errors as well as control the shape of an antenna's radiated beam. This thesis examines the ... -
Shape Control of Composite Material Plates using Piezoelectric Actuators
Elshafei, M.A.; Agrawal, B.N. (1997);This paper concerns the shape control of composite material plates using piezoelectric actuators. A finite element formulation is developed for modeling a laminated composite plate that has piezoelectric actuators and ... -
Modal analysis and active vibration control of the Naval Postgraduate School Space Truss
Johnson, Scott E.; Vlattas, John (Monterey, California. Naval Postgraduate School, 1998-06-01);This thesis examines active control of the Naval Postgraduate School (NPS) Space Truss using a piezoceramic stack actuator. Preceding the development of an active control mechanism for the NPS space truss, modal testing ...