Data storage device comprising slew rate anti-windup compensation for microactuator

摘要

A data storage device is disclosed comprising a disk, a head, and a microactuator configured to actuate the head over the disk. An input signal to a compensator is generated, wherein the compensator is configured to generate a microactuator control signal. A slew rate signal representing a slew rate of the microactuator control signal is generated and applied to a first saturator configured to generate a saturated slew rate signal. The input signal is adjusted based on the slew rate saturation signal, and the microactuator is controlled based on the microactuator control signal.

主权项

1. A data storage device comprising:
a disk; a head; a microactuator configured to actuate the head over the disk; and control circuitry configured to:
generate an input signal to a compensator, wherein the compensator is configured to generate a microactuator control signal;generate a slew rate signal representing a slew rate of the microactuator control signal;apply the slew rate signal to a first saturator configured to generate a saturated slew rate signal;adjust the input signal based on the slew rate saturation signal; andcontrol the microactuator based on the microactuator control signal.