| 摘要 |
<p>An actuator driving method and an actuator driving device for PWM-driving an actuator of a storage disk device are disclosed. This method and device prevent a servo signal from being overlapped with switching noises. The storage disk device includes a head (2) for reading information from a storage disk (1), a PWM driver (9) for generating a drive current having a pulse width corresponding to a current indication value, a linear driver (10) for generating a drive current of which a magnitude corresponds to the current indication value, an actuator (VCM), driven by the drive current, for moving the head, and a control circuit (7) for generating the current indication value for positioning the head from the servo information read by the head from the storage disk. The driving method includes a step of PWM-driving the actuator by the PWM driver, and a step of effecting a switchover from the PWM drive to a linear drive by the linear driver during a period for which the control circuit reads the servo information.</p> |
