Apparatus and method for dynamic fly height adjustment

Apparatus and method for dynamic fly height adjustment

Disclosed is an apparatus and method for dynamic fly height and roll adjustment of a physical asperity sensor (PAS) head. The PAS head is used to test disk asperity heights and mechanical interference (commonly known as glide height and take off height). The PAS may be adjusted through a pivoting de...

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Hauptverfasser: HILLMAN WESLEY LEROY, MELLO TONY, MENDEL CARL ROBERT, VOSS STEVEN HARRY, ROBINSON BOB C, SEING HONG S, NAYAK ULLAL VASANT
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 HILLMAN WESLEY LEROY
MELLO TONY
MENDEL CARL ROBERT
VOSS STEVEN HARRY
ROBINSON BOB C
SEING HONG S
NAYAK ULLAL VASANT
description Disclosed is an apparatus and method for dynamic fly height and roll adjustment of a physical asperity sensor (PAS) head. The PAS head is used to test disk asperity heights and mechanical interference (commonly known as glide height and take off height). The PAS may be adjusted through a pivoting device such as a joystick coupled through one or more actuators to the pivoting device by actuator arms. In one embodiment, the actuator is a piezoelectric motor. The PAS head may utilize a detector to indicate the distance of the disk asperity from the PAS head. The method comprises receiving the signal and in response, operating the actuators to adjust the position of the pivoting device to obtain a selected positioning of either the fly height or the roll of the PAS.
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Apparatus and method for dynamic fly height adjustment
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