Patent ID: 11875821
Assignee: TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A disk device comprising:
a disk;
an actuator assembly;
a head mounted on the actuator assembly;
a first actuator configured to move the actuator assembly;
a second actuator configured to move the head;
a vibration sensor;
a first controller configured to determine a first operation amount of the first actuator based on a difference between a current position of the head and a target position of the head, the first operation amount being corrected using a first filter value;
a second controller configured to determine a second operation amount of the second actuator based on the difference; and
a processor configured to:
perform a first filtering to calculate a first filter value based on a vibration detected by the vibration sensor at multiple points in time and filter coefficients,
perform a second filtering to generate a second filter value based on the vibration detected by the vibration sensor at each of the multiple points in time; and
update the filter coefficients based on the second filter values and a difference between the target position and an updated position of the head, which has been positioned thereto by operating the first actuator by the corrected first operation amount and operating the second actuator by the second operation amount.