REGULATING TUNING RATE OF ADAPTIVE FILTER COEFFICIENTS FOR FEED-FORWARD DISTURBANCE REJECTION IN A SERVO CONTROL LOOP

摘要

In a servo control loop, the rate of change of filter coefficients used by an adaptive filter to counteract external disturbances to head position is regulated in response to a characteristic of an acceleration signal. Regulating the rate of change of the filter coefficients may improve the stability of the servo control loop.