Optimal steering of a paraboloid antenna using piezoelectric actuators

The use of piezoelectric actuators to modify an antenna radiation pattern has been investigated recently. In this paper, a doubly curved paraboloid antenna of Lexan(R) material is considered, and the optimal size, location, and field of the piezoelectric actuators are determined, for steering the ra...

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Published in:Smart materials and structures 2007-02, Vol.16 (1), p.67-75
Main Authors: Gupta, V K, Seshu, P, Kurien Issac, K, Shevgaonkar, R K
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Measurement and testing methods
Physics
Servo and control equipment
robots
Solid mechanics
Structural and continuum mechanics
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description The use of piezoelectric actuators to modify an antenna radiation pattern has been investigated recently. In this paper, a doubly curved paraboloid antenna of Lexan(R) material is considered, and the optimal size, location, and field of the piezoelectric actuators are determined, for steering the radiation. The deformation induced by the piezoactuators is determined using a shell element modified for this purpose, and validated using extensive experiments on curved beams and shells with piezopatches. The genetic algorithm is used as the optimization tool. One of the contributions of this paper is a formulation of the optimization problem which reduces the computational effort significantly. A reasonable amount of steering with good beam quality is achieved.
doi_str_mv 10.1088/0964-1726/16/1/007
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subjects Exact sciences and technology
Fundamental areas of phenomenology (including applications)
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Measurement and testing methods
Physics
Servo and control equipment
robots
Solid mechanics
Structural and continuum mechanics
title Optimal steering of a paraboloid antenna using piezoelectric actuators
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