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Analysis Tool to Characterize Flex Cable Induced Random Transient Vibration (RTV) of A Server Class HDD Disclosure Number: IPCOM000235955D
Publication Date: 2014-Mar-31
Document File: 3 page(s) / 155K

Publishing Venue

The Prior Art Database


The article presents a improved methodology to review settling dynamics of a server class HDD. The proposed data presentation and analysis scheme should benefit review to get a quick graphic comprehension of the complicated characteristic of settling dynamics.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 60% of the total text.

Page 01 of 3

Tool to Ch

r Class HD

le present

D. The pr

get a quic


aracterize D

s a improve

oposed da

k graphic c

Analysis A Serve

Flex Cable

d methodo

ta presenta


Induced R

logy to rev

tion and an

sion of the

andom Tra

iew settling

alysis sch complicate

nsient Vib

  dynamics heme should

d characte

ration (RTV

of a serve

benefit ristic of set

) of



The artic

class HD

review to



Random T

Reducing random a

As a resu

Using the lower RTV

1st bendin

(FEA) ana

ransient Vib RTV amplitu ccess. In add

lt, minimum R

following tim

than that at g mode of fle

lysis in the n

ration (RTV) de and decre

ition, RTV at

TV is desired

e domain set

the bottom ro

x vibration, o

ext figure. Th

is a key detra

ase settling t

write seek c

for a HDD a

tling figure as

w (PCZ9314

f which its m

e natural fre

ctor of seek ime will be es

an cause trac

pplication in

an example
A). The visib

ode shape is

quency of the

performance sential to im k squeeze, t


, the subplot le amplitude

illustrated by

1st bending

for server cla

prove seek p hus jeopardiz

at top row (P

is mainly con

the Finite E

mode is aro

ss HDD. erformance a

e data integr

CZ9906A) ha

 tributed by t lement Analy

und 550 Hz.

nd ity.

s he sis

Page 02 of 3

Flex RTV in general shows similar amplitude among all heads while it depends on the target track location, seek length, and direction of seek. To present those complicated information is not a trivial job, not to mention to create a figure of merit to index the p...