| 摘要 |
<p>A disk storage apparatus including a position detection section (13) for producing position error information (e) corresponding to the current position of a head (2) from servo information which has been previously recorded on a disk (1) and is detected by the head (2), a position control section (14) for producing position control information (c) corresponding to the position error information, a voltage detection section (11) for detecting a voltage generated in driving an actuator (7) for positioning the head (2) with respect to the disk (1), and for outputting a voltage signal, a disturbance estimation section (12) for estimating the magnitude of a disturbance exerted on the head (2) from the voltage signal by the voltage detection section (11) and from a drive signal by a drive section (10) of the actuator, and producing disturbance estimation information, a correction section (15) for correcting the position control information (c) by the position control section (14) with the disturbance estimation information and producing the drive signal, and a disturbance monitor section (18) for monitoring the disturbance estimation information, and prohibiting a record by the head (2) if the disturbance estimation information exceeds an allowable range, wherein even if the head (2) is largely dislocated from a target track due to a large shock or vibration at data recording, an erroneous erasing of the adjacent track can be prohibited. <IMAGE></p> |
