Disk drive with parallel head actuation

摘要

An apparatus includes a first read/write head coupled to a first micro actuator, a second read/write head coupled to a second micro actuator, an actuator and a controller. The actuator is coupled to both the first and second micro actuators. The controller is configured to position the first read/write head in response to a first micro actuator control signal and an actuator control signal. Further, the controller is configured to position the second read/write head in response to a second micro actuator control signal and the actuator control signal. The positioning of the first and second read/write heads by the controller is performed substantially simultaneously.

主权项

1. An apparatus, comprising:
a first read/write head coupled to a first micro actuator and an actuator; a second read/write head coupled to a second micro actuator and the actuator; and a controller configured to position the first read/write head in response to both a first micro actuator control signal and an actuator control signal, and configured to position the second read/write head in response to both a second micro actuator control signal and the actuator control signal, wherein the positioning of the first read/write head and the second read/write head are performed simultaneously, wherein an actual position of the first read/write head is compared to a desired position of the first read/write head to produce a first position error signal, and wherein the controller is configured to actuate both the first micro actuator and the actuator in response to the first position error signal, wherein an actual position of the second read/write head is compared to a desired position of the second read/write head to produce a second position error signal, and wherein the controller is configured to actuate only the second micro actuator in response to the second position error signal.