Distributed piezoelectric element method for vibration control of smart plates

A new method for active control of plates is presented that includes method s for designing piezoelectric modal sensors and modal actuators. The piezoe lectric modal sensor and modal actuator are designed by cutting all of the piezoelectric Layers into several independent elements. The modal coordinat es and the modal velocities can be obtained from the charges and currents g enerated by the sensor elements, and the modal actuator is designed by modu lating the spatial distribution of voltage applied on the piezoelectric act uator. A scheme for modal control of smart plates is given. Moreover, impro vement of the controllabilty of the plates due to segmentation actuator lam ina is discussed.