Abstract
A structural control concept, using multiple active - passive hybrid actuators (piezoelectric materials with active voltage sources and external passive RL circuits) on a ring structure, is investigated. A concurrent design method is developed to simultaneously optimize the active control gains and the values of the shunt resistors and inductors. A Kalman filter is employed to estimate the states of this multi-input - multi-output system from piezoelectric sensor measurements. Analysis results indicate that the proposed approach can suppress vibration and noise radiation effectively, and it can achieve better performance with less control effort as compared to a purely active system.
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