Smart Composite Plate Shape Control Using Piezoelectric Materials II. Optimization

Elshafei, M. Adnan

doi:10.21608/asat.1997.25398

Smart Composite Plate Shape Control Using Piezoelectric Materials II. Optimization

Document Type : Original Article

Author

M. Adnan Elshafei

Ph.D., Egyptian Armed Forces.

10.21608/asat.1997.25398

Abstract

For the aircraft industry, the ability to change and control the shape of the structures has been a challenging problem. In the present work the shape control of fiber-reinforced composite plate with embedded piezoelectric actuators and sensors is investigated. For shape control and shape optimization, an optimization algorithm based on finite element technique, is presented which formulate the error between the actual and the desired shape. The error (objective) function is the root mean square of the error between the point in the actual surface and the corresponding point in the desired surface for each element of the finite element grid. The algorithm is able to compute the optimal amount of voltage applied to each actuator to achieve minimum error function, and determine the value of the error function for different actuator(s) position for a specified amount of the applied voltage.