Active control of honeycomb sandwich plate using MFC piezoelectric actuators

This paper deals with the vibration control of a cantilever honeycomb sandwich plate by using Macro-Fiber Composite (MFC) piezoelectric actuator. Firstly, the honeycomb plate is equivalent to an orthogonal anisotropic plate. Secondly driving force and bending moment formulas of MFC actuator are derived based on the constitutive relations of the piezoelectric material, the equivalent parameters and bend deformation theory. The result reveals that driving force and bending moment not only depend on the driving voltage and piezoelectric strain constants (d33), but also have relationship with the elastic modulus of honeycomb plate. To simulate the vibration of cantilever honeycomb plate structure, the governing equation of the plate bonded with MFC actuators is derived. Finally, the vibration by proportional derivative (PD) control of system with MFC actuator is simulated. The results show that better control performance is obtained by using MFC actuator when system under impulse excitation and steady state sine excitation. The vibration amplitude is diminished over 75% under PD control.