does not reach the target location b as the read write head changes direction and moves away from target location b fig7 b shows seek acceleration in the opposite direction i e negative to positive wherein the read write head experiences a similar recoil at time t 1 and is initially driven away from the target location b in both instances the target location b is reached at time t 2 0034 fig7 c illustrates the improved settle time when the present invention is implemented as recoil similarly is shown to appear at time t 1 velocity of the read write head approaches zero as the read write head starts to change direction a gain is applied to the position error signal to produce an enhanced control signal 152 see fig5 b the summation of enhanced control signal 152 and closed loop control signal 155 produces combined signal 160 and provides increased bandwidth to further urge the read write head to reach the target location b at time t 3 in accordance with one aspect of the present invention the gain that is applied to the position error signal when either of the two aforementioned conditions is satisfied is one that is not constant in magnitude but rather one that decays exponentially over each digital servo sample fig8 illustrates this decaying nature which is necessary in order to prevent possible mechanical resonance in the drive the exponential decay of gain g may be represented as a function of digital servo sample by the following relationship where.