Control of transient response on a servosystem using mode-switching control, and its application to magnetic disk drives

1998 ◽  
Vol 6 (9) ◽  
pp. 1117-1123 ◽  
Author(s):  
Takashi Yamaguchi ◽  
Hiromu Hirai
Keyword(s):  
Transient Response ◽  
Switching Control ◽  
Mode Switching ◽  
Disk Drives ◽  
Magnetic Disk

Failure analysis of laser-textured surfaces

2000 ◽  
Vol 214 (5) ◽  
pp. 471-483 ◽  
Author(s):  
S Chilamakuri ◽  
X Zhao ◽  
B Bhushan
Keyword(s):  
Plastic Deformation ◽  
Operating Conditions ◽  
Disk Drives ◽  
Critical Number ◽  
Textured Surfaces ◽  
Tribological Behaviour ◽  
Magnetic Disk ◽  
Size And Shape ◽  
Ultrahigh Density ◽  
Theoretical Results

Friction/stiction behaviour of ultrahigh-density magnetic disk drives can be controlled by controlling the size and shape of the laser bumps. Tribological behaviour of laser-textured disk surfaces depends on the size and shape of the laser bumps, bump density and operating conditions. In this study, theoretical and experimental analyses have been carried out on nine different laser-textured disk surfaces. Stiction and friction experiments have been carried out on sombrero, V-type and W-type laser-textured disks and these results are compared with theoretical results. A good correlation is obtained between experimental and theoretical results. The effect of laser bump uniformity on critical number of bumps required to prevent plastic deformation and stiction has also been studied.

scholarly journals Multi-mode switching control of hybrid electromagnetic suspension based on road conditions adaptation

2020 ◽  
Vol 58 (3) ◽  
pp. 697-710
Author(s):  
Xiangpeng Meng ◽  
Renkai Ding ◽  
Zeyu Sun ◽  
Ruochen Wang ◽  
Long Chen
Keyword(s):  
Switching Control ◽  
Mode Switching ◽  
Electromagnetic Suspension ◽  
Multi Mode
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