【発明の名称】磁気ディスク装置

Title:

【発明の名称】磁気ディスク装置

Document Type and Number:

Japanese Patent JP2637118

Kind Code:

B2

Abstract:

A head positioning control system has a speed control mode in which a head is moved by controlling a speed of said head and a position control mode in which the head is positioned onto a target track in accordance with position data of the head attained from servo data. The head positioning control system controls the movement of the head in the speed control mode until the head reaches within a first predetermined distance from the target track, and switches the control mode to the position control mode when the head reaches within the first predetermined distance from the target track, whereby the head is controlled to track the target track. When the head shifts from the target track by a second predetermined distance or more in the position control mode, this control system switches the mode to the speed control mode and immediately executes a control sequence from the speed control mode to the position control mode, starting at the head's current position.

Inventors:

SAKAI JUJI
SUGAYA JUKO

Application Number:

JP28201587A

Publication Date:

August 06, 1997

Filing Date:

November 10, 1987

Export Citation:

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