The QR modes measurement and modeling in the head actuator assembly

Li Mei Xu; Seng Zeng; Ning Qun Guo; Rong Ming Lin

doi:10.1109/APMRC.2000.898947

The QR modes measurement and modeling in the head actuator assembly

Li Mei Xu, Seng Zeng, Ning Qun Guo, Rong Ming Lin

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

1 Citation (Scopus)

Abstract

This paper studies the characteristics of quasi-rigid body modes (QR modes), which are most important in understanding dynamic behaviour of the head actuator assembly in HDD. Experiment results are presented in terms of the frequency response functions obtained in lateral direction excitation. Finite element models are used to predict the quasi-rigid body modes and their dependence on the stiffness of pivot bearing. A good agreement is obtained between the numerical prediction and measurement. It is shown that there may exist six quasi-rigid body modes, and two of them may lead to residual vibration. The causes are likely due to flexibility of the pivot bearing system and the difference in stiffness of the two ball bearings in the pivot system.

Original language	English
Title of host publication	2000 Asia-Pacific Magnetic Recording Conference - Digests of APMRC 2000 on Mechanical and Manufacturing Aspects of HDD
Publisher	IEEE, Institute of Electrical and Electronics Engineers
Pages	MP11/1-MP11/2
ISBN (Electronic)	0780362543, 9780780362543
DOIs	https://doi.org/10.1109/APMRC.2000.898947
Publication status	Published - 2000
Externally published	Yes
Event	Asia-Pacific Magnetic Recording Conference 2000 - Tokyo, Japan Duration: 6 Nov 2000 → 8 Nov 2000 https://ieeexplore.ieee.org/xpl/conhome/7223/proceeding (Proceedings)

Conference

Conference	Asia-Pacific Magnetic Recording Conference 2000
Abbreviated title	APMRC 2000
Country/Territory	Japan
City	Tokyo
Period	6/11/00 → 8/11/00
Internet address	https://ieeexplore.ieee.org/xpl/conhome/7223/proceeding (Proceedings)

Keywords

head actuator assembly
pivot-bearing
quasi- rigid body mode
Vibration

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10.1109/APMRC.2000.898947

Cite this

Xu, L. M., Zeng, S., Guo, N. Q., & Lin, R. M. (2000). The QR modes measurement and modeling in the head actuator assembly. In 2000 Asia-Pacific Magnetic Recording Conference - Digests of APMRC 2000 on Mechanical and Manufacturing Aspects of HDD (pp. MP11/1-MP11/2). [898947] IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/APMRC.2000.898947

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title = "The QR modes measurement and modeling in the head actuator assembly",

abstract = "This paper studies the characteristics of quasi-rigid body modes (QR modes), which are most important in understanding dynamic behaviour of the head actuator assembly in HDD. Experiment results are presented in terms of the frequency response functions obtained in lateral direction excitation. Finite element models are used to predict the quasi-rigid body modes and their dependence on the stiffness of pivot bearing. A good agreement is obtained between the numerical prediction and measurement. It is shown that there may exist six quasi-rigid body modes, and two of them may lead to residual vibration. The causes are likely due to flexibility of the pivot bearing system and the difference in stiffness of the two ball bearings in the pivot system.",

keywords = "head actuator assembly, pivot-bearing, quasi- rigid body mode, Vibration",

author = "Xu, {Li Mei} and Seng Zeng and Guo, {Ning Qun} and Lin, {Rong Ming}",

note = "Publisher Copyright: {\textcopyright} 2000 IEEE. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.; Asia-Pacific Magnetic Recording Conference 2000, APMRC 2000 ; Conference date: 06-11-2000 Through 08-11-2000",

year = "2000",

doi = "10.1109/APMRC.2000.898947",

language = "English",

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booktitle = "2000 Asia-Pacific Magnetic Recording Conference - Digests of APMRC 2000 on Mechanical and Manufacturing Aspects of HDD",

publisher = "IEEE, Institute of Electrical and Electronics Engineers",

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Xu, LM, Zeng, S, Guo, NQ & Lin, RM 2000, The QR modes measurement and modeling in the head actuator assembly. in 2000 Asia-Pacific Magnetic Recording Conference - Digests of APMRC 2000 on Mechanical and Manufacturing Aspects of HDD., 898947, IEEE, Institute of Electrical and Electronics Engineers, pp. MP11/1-MP11/2, Asia-Pacific Magnetic Recording Conference 2000, Tokyo, Japan, 6/11/00. https://doi.org/10.1109/APMRC.2000.898947

The QR modes measurement and modeling in the head actuator assembly. / Xu, Li Mei; Zeng, Seng; Guo, Ning Qun; Lin, Rong Ming.

2000 Asia-Pacific Magnetic Recording Conference - Digests of APMRC 2000 on Mechanical and Manufacturing Aspects of HDD. IEEE, Institute of Electrical and Electronics Engineers, 2000. p. MP11/1-MP11/2 898947.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

TY - GEN

T1 - The QR modes measurement and modeling in the head actuator assembly

AU - Xu, Li Mei

AU - Zeng, Seng

AU - Guo, Ning Qun

AU - Lin, Rong Ming

PY - 2000

Y1 - 2000

N2 - This paper studies the characteristics of quasi-rigid body modes (QR modes), which are most important in understanding dynamic behaviour of the head actuator assembly in HDD. Experiment results are presented in terms of the frequency response functions obtained in lateral direction excitation. Finite element models are used to predict the quasi-rigid body modes and their dependence on the stiffness of pivot bearing. A good agreement is obtained between the numerical prediction and measurement. It is shown that there may exist six quasi-rigid body modes, and two of them may lead to residual vibration. The causes are likely due to flexibility of the pivot bearing system and the difference in stiffness of the two ball bearings in the pivot system.

AB - This paper studies the characteristics of quasi-rigid body modes (QR modes), which are most important in understanding dynamic behaviour of the head actuator assembly in HDD. Experiment results are presented in terms of the frequency response functions obtained in lateral direction excitation. Finite element models are used to predict the quasi-rigid body modes and their dependence on the stiffness of pivot bearing. A good agreement is obtained between the numerical prediction and measurement. It is shown that there may exist six quasi-rigid body modes, and two of them may lead to residual vibration. The causes are likely due to flexibility of the pivot bearing system and the difference in stiffness of the two ball bearings in the pivot system.

KW - head actuator assembly

KW - pivot-bearing

KW - quasi- rigid body mode

KW - Vibration

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DO - 10.1109/APMRC.2000.898947

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BT - 2000 Asia-Pacific Magnetic Recording Conference - Digests of APMRC 2000 on Mechanical and Manufacturing Aspects of HDD

PB - IEEE, Institute of Electrical and Electronics Engineers

T2 - Asia-Pacific Magnetic Recording Conference 2000

Y2 - 6 November 2000 through 8 November 2000

ER -

The QR modes measurement and modeling in the head actuator assembly

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Conference

Keywords

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