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.
Bisegna, P., Caruso, G., Del Vescovo, D., Galeani, S., Menini, L. (2000). Semi-active control of a thin piezoactuated structure. In Smart Structures and Materials 2000: Damping and Isolation (pp.300-311). BELLINGHAM : Society of Photo-Optical Instrumentation Engineers, United States [10.1117/12.384571].
Semi-active control of a thin piezoactuated structure
BISEGNA, PAOLO;GALEANI, SERGIO;MENINI, LAURA
2000-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.