CPC G11B 5/5586 (2013.01) [G11B 5/4813 (2013.01); G11B 5/5547 (2013.01); G11B 5/5578 (2013.01); G11B 5/59622 (2013.01)] | 20 Claims |
1. A disk drive comprising:
first and second heads;
a first microactuator configured to move the first head relative to a disk;
a second microactuator configured to move the second head relative to a disk;
a first arm to which the first head and the first microactuator are mounted;
a second arm to which the second head and the second microactuator are mounted;
a first controller configured to generate a first control signal for moving the first arm and a second control signal for the first microactuator, in response to a first position signal generated by the first head;
a second controller configured to generate a third control signal for moving the second arm and a fourth control signal for the second microactuator, in response to a second position signal generated by the second head;
a third controller configured to generate a feedforward correction signal for modifying the second control signal based on a first transfer function, wherein the first transfer function models the feedforward correction signal as a function of the third control signal; and
a notch filter configured to generate a fifth control signal for the first microactuator based at least on the feedforward correction signal.
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