Disturbance observer design with Bode’s ideal cut-off filter in hard-disc-drive servo system

Mechatronics ◽  
2013 ◽  
Vol 23 (7) ◽  
pp. 856-862 ◽  
Author(s):  
Ying Luo ◽  
Tao Zhang ◽  
BongJin Lee ◽  
Changik Kang ◽  
YangQuan Chen
Keyword(s):  
Disturbance Observer ◽  
Servo System ◽  
Observer Design ◽  
Hard Disc Drive ◽  
Disc Drive

Robust High-Speed Positioning Servo System Based on Disturbance Observer

2009 ◽  
Vol 129 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Masaki Sazawa ◽  
Kiyoshi Ohishi ◽  
Seiichiro Katsura
Keyword(s):  
Disturbance Observer ◽  
High Speed ◽  
Servo System

scholarly journals Adaptive Multivariable Super-Twisting Sliding Mode Controller and Disturbance Observer Design for Hypersonic Vehicle

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Wenru Fan ◽  
Bailing Tian
Keyword(s):  
Disturbance Observer ◽  
Controller Design ◽  
Sliding Mode ◽  
Hypersonic Vehicle ◽  
Observer Design ◽  
Sliding Mode Controller ◽  
Finite Time Convergence ◽  
Gain Adaptation ◽  
Chattering Reduction ◽  
Sliding Manifold

A multivariable super-twisting sliding mode controller and disturbance observer with gain adaptation, chattering reduction, and finite time convergence are proposed for a generic hypersonic vehicle where the boundary of aerodynamic uncertainties exists but is unknown. Firstly, an input-output linearization model is constructed for the purpose of controller design. Then, the sliding manifold is designed based on the homogeneity theory. Furthermore, an integrated adaptive multivariable super-twisting sliding mode controller and disturbance observer are designed in order to achieve the tracking for step changes in velocity and altitude. Finally, some simulation results are provided to verify the effectiveness of the proposed method.

scholarly journals Experimental Study of Particles Induced by Screw Tightening Process for Hard Disc Drive Assembly: Effects of ‘Bit’ Speed

2018 ◽  
Vol 22 (1) ◽  
pp. 65-76
Author(s):  
Somchai Laksanasittiphan ◽  
Karuna Tuchinda ◽  
Anchalee Manonukul ◽  
Surasak Suranuntchai
Keyword(s):  
Experimental Study ◽  
Hard Disc Drive ◽  
Disc Drive
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