DocumentCode
2823568
Title
Acceleration feedforward control against rotational disturbance in hard disk drives
Author
Jinzenji, A. ; Sasamoto, T. ; Aikawa, K. ; Yoshida, S. ; Aruga, K.
Author_Institution
HDD Div., Fujitsu Labs. Ltd., Kawasaki, Japan
fYear
2000
fDate
6-8 Nov. 2000
Abstract
We have developed a hard disk drive (HDD) free of rotational disturbance using dual piezoelectric accelerometers. The dual accelerometers detect angular acceleration in the HDD and compensate for its negative effects. For optimum compensation we introduced the use of an optimal phase compensation filter (PCF). Using this controller, HDD performance does not decrease even under the severest conditions: for example, in a disk array system that has the severest mechanical interaction between HDDs.
Keywords
acceleration control; accelerometers; compensation; disc drives; feedforward; hard discs; piezoelectric transducers; acceleration feedforward control; controller; disk array; dual piezoelectric accelerometer; hard disk drive; optimal phase compensation filter; rotational disturbance; Acceleration; Accelerometers; Actuators; Automatic frequency control; Control systems; Filters; Hard disks; Phased arrays; Transfer functions; Vibrations;
fLanguage
English
Publisher
ieee
Conference_Titel
Asia-Pacific Magnetic Recording Conference, 2000. APMRC 2000
Conference_Location
Tokyo, Japan
Print_ISBN
0-7803-6254-3
Type
conf
DOI
10.1109/APMRC.2000.898922
Filename
898922
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