Multi-variable model reduction of smart structure in active vibration control
Résumé
In this paper, a new model reduction method is proposed to further reduce the structural model obtained by classical model reduction techniques. The reduction is in the frequency domain and is able to obtain a reduce-order model that is close to the initial model in a specified frequency range. The reduced-order model keeps the poles of the initial model in the frequency range of interest. LMI is used to minimize the relative error. This method is effective on both single-input single-output (SISO) system and multi-input multi-output (MIMO) system. The application on a beam-piezo model with multiple actuators and sensors validates its effectiveness.
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ifacconf.pdf (1.37 Mo)
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Block_diagram_state_space.jpg (84.39 Ko)
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Compare_initial_MFT+LMI.jpg (310.28 Ko)
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Compare_initial_MFT.jpg (301.31 Ko)
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Delta_MFT.jpg (153.17 Ko)
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Delta_MFT_MFT+LMI.jpg (189.49 Ko)
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Response_actuators_sensors.jpg (307.13 Ko)
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