Patent ID: 11915731
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A data storage device, comprising:
one or more disks;
an actuator mechanism configured to position one or more heads proximate to one or more disk surfaces of the one or more disks; and
one or more processing devices, comprising an actuator mechanism control system configured for controlling the actuator mechanism, and
wherein the one or more processing devices are configured to:
output a multi-rate excitation to at least one multi-rate notch filter of the actuator mechanism control system;
detect a frequency response of the actuator mechanism in response to the multi-rate excitation; and
calibrate the at least one multi-rate notch filter of the actuator mechanism control system, based at least in part on the detected frequency response of the actuator mechanism, wherein the at least one multi-rate notch filter comprises at least one primary actuator multi-rate notch filter and at least one fine actuator multi-rate notch filter.