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Proceedings Paper

Simultaneous optimization of actuator position and control parameter for adaptive mechanical structures
Author(s): Christian-Toralf Weber; Ulrich Gabbert; Marc R. Enzmann
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Paper Abstract

The design of adaptive mechanical structures is divided into three parts: the structural design, the controller design and the placement of actuators and sensors. The objective of the design is to create a mechanical structure, which corresponds with the physical and technical requirements. The controller design includes the definition of the optimal controller law and the parameters required to create an actuator adjustment from the perceptible signals of the structural answer. The placement of the actuators and of the sensors give an answer to the question about the optimal distribution of the actuators and sensors in the structure. The sensor placement determines which signals are available to the automatic controller. The position of the actuators in the mechanical structure determines at which points control forces may act to influence the structural behavior in a suitable manner. The determination of the optimal position of the actuators require information about the controller design, the sensor position and the layout and the behavior of the structure. Based on the ideas of the shape optimization and topology optimization, a procedure will be presented, to handle simultaneously the discrete positions of the actuators and the continuous parameters of the controller. The method is based on an augmented Lagrangian function to include additional conditions and the discontinuity of the discrete variables into the objective function. The method will be demonstrated by an test example.

Paper Details

Date Published: 24 July 1998
PDF: 9 pages
Proc. SPIE 3323, Smart Structures and Materials 1998: Mathematics and Control in Smart Structures, (24 July 1998); doi: 10.1117/12.316304
Show Author Affiliations
Christian-Toralf Weber, Otto-von-Guericke-Univ. Magdeburg (Germany)
Ulrich Gabbert, Otto-von-Guericke-Univ. Magdeburg (Germany)
Marc R. Enzmann, Otto-von-Guericke-Univ. Magdeburg (Germany)

Published in SPIE Proceedings Vol. 3323:
Smart Structures and Materials 1998: Mathematics and Control in Smart Structures
Vasundara V. Varadan, Editor(s)

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