| 摘要 |
A support assembly for supporting a magnetic circuit of a disc drive voice coil motor, the support assembly suppressing the excitation of mechanical resonances in the drive. The disc drive includes a disc and an actuator assembly adjacent the disc, the actuator assembly having a coil of a voice coil motor to which current is applied in order to position a head of the actuator assembly relative to the surface of the disc. The voice coil motor further includes a magnetic circuit comprising a pair of permanent magnets and corresponding magnetically permeable pole pieces disposed above and below the coil. The support assembly suspends the magnetic circuit between a base deck and a top cover of the disc drive and allows cantilevered movement of the magnetic circuit in response to the acceleration of the coil as a result of current being applied to the coil.
|
