A magnetic disk drive requires a motor to position a read/write head over tracks of data on a spinning disk, (see fig. e4.4 in dorf and bishop). the motor head may be represented by the transfer function

Explanation:

The transfer function of the given problem could be written as;

G(s) = 10 / s(ts + 1)

where t = 0.001 s

Now the transfer function would actually give the position error between the actual and desired point of the read/write head. A better and steady state function would enable to reduce the error. The error would be processed with the input signal and a closed loop control system will be implemented to smoothen the disk read or write system

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