公开(公告)号：EP0094495A2

公开(公告)日：1983-11-23

申请号：EP83102954.1

申请日：1983-03-25

申请人： International Business Machines Corporation

发明人： Anderson, Todd Barry ,  Glaser, Thomas William ,  Neesz, John Jacob

IPC分类号： G11B5/58 ,  G11B5/55

CPC分类号： G11B5/5547

摘要： A sector servo seek control samples each sector to obtain sector time, the track identification within a sequence of track types and a position error signal (PES) for a track location to track location seek. The device during each sector determines the actual transducer track location and the next sector projected track location with respect to the sequence of track types. The projected track location is corrected using the error signal (PES) to find the actual location, but if a sector signal is missing or erroneous, the projected location is used as the actual location, permitting a composite correction to be made when a correct sector signal is obtained. The seek time is minimized by using maximum acceleration followed by maximum deceleration while not exceeding a velocity value that would cause the device to overshoot the target track using full deceleration.