Ramp arrangement and method for measuring the position of an...

Details Ramp arrangement and method for measuring the position of an... Ramp arrangement and method for measuring the position of an...

2005-08-23

2005-08-23

Le, N. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S176000

Reexamination Certificate

active

06933735

ABSTRACT:
Ramp arrangements and methods in accordance with the present invention can provide the position or velocity of an actuator assembly in a rotating media data storage device while loading or unloading a head connected with the actuator assembly from a disk. One such arrangement includes a conductive ramp electrically coupled to a conductive suspension lift tab such that a closed circuit is formed when the head is unloaded from the disk. As the suspension lift tab slides along the ramp, the resistance of the circuit changes. By measuring multiple positions at multiple times, a head velocity can be determined.

REFERENCES:
patent: 6288982 (2001-09-01), Kato
patent: 6353510 (2002-03-01), Drouin
patent: 6469527 (2002-10-01), Gardner
patent: 2002/0054451 (2002-05-01), Moon et al.

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