Title :
On improving head-disk interface in hard disk drives using active control
Author :
Swei, Shan-Min ; Gao, Peng
Author_Institution :
Sch. of Mech. & Production Eng., Nanyang Technol. Univ., Singapore
Abstract :
How to improve head disk interface (HDI) characteristics in the mechanical design of hard disk drives (HDDs) has become increasingly important due to ever-growing demand for storage density and access speed. In the paper, an active actuation and control of the suspension structure in HDDs utilizing piezo-films is investigated. Its applications in reducing head-disk friction/wear and suppressing induced vibrations are studied. An analytical model for a cantilever beam like structure with the bonded piezo-films is presented. A direct output feedback control is proposed and its effectiveness in suppressing induced vibrations is demonstrated both theoretically and experimentally
Keywords :
disc drives; feedback; hard discs; piezoelectric materials; vibration control; active actuation; active control; cantilever beam like structure; direct output feedback control; hard disk drives; head-disk interface; induced vibrations suppression; mechanical design; piezo-films; Analytical models; Bonding; Hard disks; Output feedback; Piezoelectric materials; Production engineering; Stability; Structural beams; Target tracking; Vibration control;
Conference_Titel :
Decision and Control, 2000. Proceedings of the 39th IEEE Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6638-7
DOI :
10.1109/CDC.2000.912173
