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Proceedings Paper

Combined optimization of active structural systems and drive circuits
Author(s): Chunping Song; Mostafa M. Abdalla; Douglas K. Lindner; Zafer Gurdal
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Paper Abstract

We consider the integrated optimization of electrically driven Recurve actuators. The drive circuit is based on a half-bridge switching amplifier topology. Both actuator and circuit physical design variables are considered in the optimization formulation. The objective is to minimize the weight of the system while satisfying performance and stability constraints. The interactions and trade offs between the actuator and the drive circuit are investigated. Optimization results show clear interrelations between the design of the electric circuit and the actuator. The optimization is based on an integrated model of the electronics with the Recurve actuator. A finite element model for Euler-Bernoulli beams is developed with appropriate coupling interface to the drive circuit. The proposed finite element model correctly considers charge variation over the actuator and leads to an energy conservative formulation. The structural model is coupled to the electric circuit model via charge-voltage transfer function.

Paper Details

Date Published: 10 July 2002
PDF: 12 pages
Proc. SPIE 4693, Smart Structures and Materials 2002: Modeling, Signal Processing, and Control, (10 July 2002); doi: 10.1117/12.475251
Show Author Affiliations
Chunping Song, Virginia Polytechnic Institute and State Univ. (United States)
Mostafa M. Abdalla, Virginia Polytechnic Institute and State Univ. (United States)
Douglas K. Lindner, Virginia Polytechnic Institute and State Univ. (United States)
Zafer Gurdal, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 4693:
Smart Structures and Materials 2002: Modeling, Signal Processing, and Control
Vittal S. Rao, Editor(s)

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