公开(公告)号：CA1003103A

公开(公告)日：1977-01-04

申请号：CA179524

申请日：1973-08-23

Applicant: IBM

Inventor： CHIEN JACK H ,  OSWALD RICHARD K

IPC: G11B21/10 ,  G05B11/36 ,  G05D3/14

Abstract: The invention relates to means for compensating for variations in the effective head gap width of a servo transducer used in a track following servo system and more specifically used within the environment of a magnetic storage system. The compensation is obtained by modifying the gain characteristic of the position error generating circuitry within the track following servo system. The method of determining the value of the compensating means and for its physical and electrical insertion position within the position error generating circuitry for different partitioned magnetic disk storage systems is also disclosed. In its simplest form, the compensating means is a resistor placed in series with the reference voltage in the AGC circuitry of the position error generating circuitry.