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A comparative study based on classical and newer piezoelectric materials based unimorph actuators for Hard Disk Drive
Author(s)
Wattananukulchai, Parinya
Date Issued
February 8, 2017
Type
Conference Paper
Abstract
The piezoelectric actuator technology for moving the read-write head of Hard Disk Drive (HDD) is very important and widely used. Advanced high-performance technologies for the actuator and servo control are required in order to achieve not only accurate positioning control on data tracks but also high-speed access onto another data track. There is strong demand for hard disk drives with high-speed access performance, which generally requires actuators with a wider servo bandwidth. This paper focuses on the comparative piezoelectric materials based unimorph actuators with classical piezo (Poly crystalline PZT) and newer piezo (Single-crystalline PMN-PT) ceramics. The advantages of piezoelectric materials in terms of mechanical and electrical characteristics aiming at a useful compromise performance displacement and resonant frequency are studied and analyzed.
Citation
IEEE Region 10 Annual International Conference Proceedings TENCON, 3464-3467, 2017
Subjects