27 April 2000 Semi-active control of a thin piezoactuated structure
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Vibration damping of a cantilever plate is achieved by using a piezoelectric element simultaneously as passive single-mode device and active broad-band actuator. Control strategies are designed on the basis of a modal model of the coupled electro- mechanical structure. This model is obtained by using a suitable finite-element formulation together with a modal analysis. A purely passive single-mode control composed of an optimally tuned external RL shunt circuit and a purely active control based on classical LQG techniques are compared to a semi-active control obtained by tuning the external shunt circuit on the second vibration mode of the structure and using a LQG controller designed on the only first-mode model.
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Paolo Bisegna, Giovanni Caruso, Dionisio Del Vescovo, Sergio Galeani, and Laura Menini "Semi-active control of a thin piezoactuated structure", Proc. SPIE 3989, Smart Structures and Materials 2000: Damping and Isolation, (27 April 2000); doi: 10.1117/12.384571; https://doi.org/10.1117/12.384571

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