Method and apparatus for limiting actuator coil temperature

Method and apparatus for limiting actuator coil temperature

The temperature of an actuator voice coil in a disc drive is regulated so as to prevent outgassing. In a preferred embodiment, coil temperature is calculated at the beginning of each long seek. If the temperature is determined to be at or below a predetermined "safe" level, temperature ris...

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Hauptverfasser: ROSE MITCHELL RAY, FRANCIS STUART KEVIN, TEHRANI BIJAN
Format: Patent
Sprache:eng
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INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator ROSE MITCHELL RAY
FRANCIS STUART KEVIN
TEHRANI BIJAN
description The temperature of an actuator voice coil in a disc drive is regulated so as to prevent outgassing. In a preferred embodiment, coil temperature is calculated at the beginning of each long seek. If the temperature is determined to be at or below a predetermined "safe" level, temperature rise is not limited and power may be applied to the coil without additional limitations. If, however, coil temperature is determined to be above the "safe" level, proportional control is used to scale back power generation so as to prevent the coil temperature from exceeding the coil's specified temperature limit.
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In a preferred embodiment, coil temperature is calculated at the beginning of each long seek. If the temperature is determined to be at or below a predetermined "safe" level, temperature rise is not limited and power may be applied to the coil without additional limitations. If, however, coil temperature is determined to be above the "safe" level, proportional control is used to scale back power generation so as to prevent the coil temperature from exceeding the coil's specified temperature limit.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Method and apparatus for limiting actuator coil temperature
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