| 摘要 |
<p>The present invention relates to a disc drive (100) that includes a base (112) and a disc (134) rotatably attached to the base (112). The disc drive (100) further includes an actuator assembly (120) that is attached to the base (112) such that the actuator assembly (120) is in an actuating relationship with respect to the base (112) and the rotating disc (134). A servo drive controls the movement of the actuator arm assembly (120) during track follow-and-seek operations of the disc drive (100). The actuator assembly (120) includes a shell (302) and a support structure (312) that is attached to the shell (302). Adding the support structure (312) to the shell increases the stiffness-to-mass ratio of the actuator assembly (120) in comparison to the shell (302) alone. The increased stiffness-to-mass ratio elevates the resonance frequency of the actuator assembly (120) such that the resonance frequency of the actuator assembly (120) falls outside the range of operating frequencies of the servo drive without significantly increasing the mass of the actuator assembly (120).</p> |
