公开(公告)号：US3614756A

公开(公告)日：1971-10-19

申请号：US3614756D

申请日：1970-01-21

Applicant: IBM

Inventor： MCINTOSH ROBERT P ,  PADALINO MARCO

IPC: G11B5/33 ,  G05D3/20 ,  G11B5/127 ,  G11B5/48 ,  G11B5/596 ,  G11B5/28 ,  G11B5/38 ,  G11B21/08

CPC classification number: G11B5/4886 ,  G05D3/20 ,  G11B5/59633 ,  G11B5/5965

Abstract: The invention relates to a servosystem used in a random access disk memory system which comprises a magnetic disk having servo tracks recorded such that the magnetic domains within the servo tracks are aligned radially from the center of the disk and data tracks which have the magnetic domains are aligned concentrically about the center of the disk, and a transducer capable of developing a data signal as a function of the rate of change of the magnetic flux associated with the data tracks and a servo signal generated by the magnitude of the absolute flux magnitude that it presented to the transducer by the transducer''s relationship to the servo tracks on the magnetic disk, the servo signal and the data signals being generated either simultaneously or alternately in the magnetic transducer.

公开(公告)号：US3924268A

公开(公告)日：1975-12-02

申请号：US49461274

申请日：1974-08-05

Applicant: IBM

Inventor： MCINTOSH ROBERT P ,  SHAHEIN HUSSEIN I

IPC: G11B21/10 ,  G11B5/596 ,  G11B21/08 ,  G11B5/56

CPC classification number: G11B5/596

Abstract: A control system for positioning a magnetic disk transducer head includes a primary carriage which provides large magnitude positioning movements and supports in a ''''piggyback'''' arrangement a low mass secondary carriage which positions the head relative to the primary carriage to provide highly accurate, extremely fast response over small distances on the order of one track width. Improved operating characteristics are obtained to permit increased track density by simultaneously and continuously controlling both carriages in response to a single position error signal with the secondary carriage being biased toward a zero displacement position relative to the primary carriage.

Abstract translation: 用于定位磁盘换能器头的控制系统包括提供大尺寸定位运动的主滑架和“背负式”装置中的支撑件，该低质量辅助滑架使头相对于主滑架定位，以提供高精度，极快的响应 在一个轨道宽度的顺序上的小距离。 获得改进的操作特性，以通过响应于单个位置误差信号同时且连续地控制两个滑架来增加轨道密度，其中辅助滑架相对于主滑架偏向零位移位置。