Quasi-shear mode piezoelectric microactuator for head-based servo control in hard disk drives

2012 ◽  
Author(s):  
Josiah Wernow ◽  
Roberto Horowitz
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Servo Control ◽  
Shear Mode ◽  
Disk Drives

Dual-Stage Servo Control for an Optical Pointing System

2013 ◽  
Author(s):  
Eric D. Miller ◽  
Raymond A. de Callafon
Keyword(s):  
Power Consumption ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Single Stage ◽  
Servo Control ◽  
Disk Drives ◽  
Bandwidth Control ◽  
High Bandwidth ◽  
Dual Stage ◽  
Reduced Power Consumption

In the realm of hard disk drives (HDD), dual-stage servo control has been shown to achieve increased control bandwidth and reduced power consumption compared to single-stage architectures [1]–[4]. Motivated by these results, we seek to apply dual-stage control to an analogous case of an optical pointing system, which has similar objectives of high-bandwidth control over a wide spatial range.

Dual-Stage Nanopositioning Scheme for 10 Tbit/in$^{\mathrm {{2}}}$ Hard Disk Drives With a Shear-Mode Piezoelectric Single-Crystal Microactuator

2015 ◽  
Vol 51 (4) ◽  
pp. 1-9 ◽  
Author(s):  
Lei Zhang ◽  
Kui Yao ◽  
Ehsan Keikha ◽  
Yi Fan Chen ◽  
Md. Arifur Rahman ◽  
...  
Keyword(s):  
Single Crystal ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Shear Mode ◽  
Disk Drives ◽  
Dual Stage
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