| 摘要 |
A servo controller controls the servo system in a disc drive. A proportional integrator component receives the target track signal indicative of a target track and a measured track signal indicative of actual or measured data head position. During seek mode, the proportional integrator provides an output signal based on the measured track signal and the target track signal. A profile generator component provides a profile signal based on the output signal from the proportional integrator. A coarse actuator is driven based on the profile signal. A filter component is coupled to the profile generator and filters the profile signal to provide a filtered profile signal. The fine actuator is driven based on the filtered profile signal.
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