Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1994-03-31
1997-01-07
Psitos, Aristotelis
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
324 7631, G11B 5596, G01R 23165
Patent
active
055923461
ABSTRACT:
An adaptive predictor for use with a control system to predict error contributions due to harmonic distortion in a error signal such that the prediction signal may be fed back and added to the error signal to compensate for the harmonic distortion. The adaptive predictor takes the error signal representative of misposition error and performs a discrete Fourier analysis to determine contributions due to individual harmonics. It then adjusts the results and tallies a running total thereby adapting to a mechanical system in which it is contained. The running total is combined with a carrier signal which is clocked to produce a predictive signal representing harmonic distortion at a given time. The predictive signal is then added back with the original error signal to produce a harmonic distortion compensated signal.
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Polaroid Corporation
Psitos Aristotelis
Ricci Christopher P.
Wamsley Patrick
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