Patent ID: 6879469

Claim:
A tuning mechanism for a flying pickup head in data storage devices comprising: a coil, a pivot, a suspension connected to the pivot, and a piezoelectric bender, wherein a free end of the suspension is connected to the piezoelectric bender having at least two layers for a piezoelectric material, each of the at least two layers of piezoelectric material has a surface located adjacent to a surface of an adjacent one of the at least two layers of piezoelectric material, electrical electrodes are located on and connected to an end of each of the at least two layers of piezoelectric material, control voltages are applied by the electrical electrodes to the piezoelectric bender to generate a neutral axis displacement and a bending deflection simultaneously; the neutral axis displacement is in a direction perpendicular to a direction of the bending deflection, the flying pickup head is located on a free end of the piezoelectric bender; a device for tuning said neutral axis displacement and said bending deflection of said piezoelectric bender will respectively tune a cross-track motion and a flying height of said pickup head and maintain a constant flying height when reading and writing data.