Seek control system based upon a detected temperature of a posit

Details Seek control system based upon a detected temperature of a posit Seek control system based upon a detected temperature of a posit

1994-10-20

1997-01-14

Kim, W. Chris

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7809, 360 9702, 318560, G11B 5596, G11B 3314, G05B 1101

Patent

active

055946038

ABSTRACT:
A seek control system in a disk system, in which the object measured is a mechanism including a voice coil motor which positions a head, and in which the temperature of the voice coil motor is detected and seek operations are controlled based on the thus detected temperature, includes a unit for determining the amount of heat causing the temperature rise of the object under measurement as the square of a voice coil motor current command value multiplied by predetermined coefficients; a unit for integrating the result obtained by subtracting the amount of naturally radiated heat from the amount of heat including the amount of heat causing the thus determined temperature rise, to determine the amount of heat in the object; and a unit for detecting the temperature of the object in accordance with the thus determined amount of heat in the object. Preferably, a calculation concerning the ratio of the amount of heat in the object to the thermal capacity of the object is performed to detect the temperature of the object under measurement.

REFERENCES:
patent: 5128813 (1992-07-01), Lee
patent: 5268804 (1993-12-01), Wallis

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