INVESTIGATION FOR ACTIVE VIBRATION CONTROL OF PIEZOELECTRIC CONICAL SHELL

In order to investigate a real conical shell model, plate element is used for the finite element method (FEM) modeling and the influence of distribute piezoelectric actuator is regarded as the boundary conditions in the mathematical modeling. Results of mode calculations with finite element model are accurate enough for engineering applications when compared with experimental results. The method in this paper is much simpler than the laminate method modeling with less calculation. The investigation of active control is based on the negative velocity feedback control in the independent modal space. Results of simulations suggested that the control method is efficient with a limited number of piezoelectric actuators. The controller can be used for reference of engineering applications because it is simple and has well robust.