Abstract
Reducing structural vibration is essential for achieving high-accuracy, high-speed head positioning for hard disk drives. Increasing main-resonance frequency is important for achieving high-accuracy head positioning. Main-resonance vibration mode has been analyzed. Using a rigid-body, two-degree-of-freedom model, an analytical eigenvalue of main-resonance vibration mode has been obtained. A method to obtain a main-resonance vibration mode sensitivity considering the rigid-body translational vibration mode and the first-order bending mode has been proposed. The results of the simulations and experiments prove that this main-resonance vibration mode design method is useful for designing high-accuracy, high-speed head positioning mechanisms for hard disk drives.
