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Design and Control of Adaptive Structures Using the Finite Element Method
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English
Abstract
Current work develops and presents a clear methodology for all stages of adaptive structure design using a commercially available FE program. A procedure for replacing the induced strain actuation of the piezo-elements by mechanical forces is developed and validated numerically using the ANSYSR coupled field piezoelectric 3-D solid elements, as well as experimentally. The use of reduced FE analysis as a spatial discretization tool for controller design is addressed and shown to be advantageous in many cases. Balanced order reduction schemes are applied to the discrete structural model in state space in order to ensure controllability and observability, as well as to maintain a low number of states for the controller design and implementation. Linear quadratic (LQ) and H∞ controller designs are presented and implemented using computer simulations of the controlled structure. The methodology is applied to a simply supported beam as a bench-mark case, and is shown to effectively control the beam vibrations.
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Authors
Citation
Pletner, B., Idan, M., Abramovich, H., and Weller, T., "Design and Control of Adaptive Structures Using the Finite Element Method," SAE Technical Paper 970585, 1997, https://doi.org/10.4271/970585.Also In
References
- Lin M.W. Abatan A.O. Rogers C.A. Application of commercial finite element codes for the analysis of induced strain-actuated structures Rogers C.A. Wallace G.G. Proceedings of the Second International Conference on Intelligent Materials 1994
- ANSYS ANSYS User's Manual - Revision 5.0 Swanson Analysis Systems 1992
- Pletner B. Abramovich H. A consistent methodology for the modeling of piezolaminated shells: Part 2 - numerical and experimental validation AIAA Journal 1996
- Gawronski W. Balanced Control of Flexible Structures Springer 1996
- Moore B.C. Principal component analysis in linear systems, controllability, observability and model reduction IEEE Transactions on Automatic Control 26 17 32 1981
- Maciejowski J.M. Multivariable Feedback Design Addison-Wesley 1989
- Pletner B. Abramovich H. A consistent methodology for the modeling of piezolaminated shells: Part 1 - theory AIAA Journal 1996
- Clark R.L. Flemming M.R. Fuller C.R. Piezoelectric actuators for distributed vibrations excitation of thin plates: A comparison between theory and experiment Journal of Vibrations and Acoustics, Transactions of the ASME 115 332 339 1993
- Bryson A.E. Ho Y.C. Applied Optimal Control Hemisphere Publishing Corporation New York 1975
- Chen C.T. Linear Systems Theory and Design Holt Saunders International Editions 1984
- Doyle J.C. Francis B.A. Tannenbaum A.R. Feedback Control Theory Macmillan 1992