Improved proximate time-optimal sliding-mode control of hard disk drives

2001 ◽  
Vol 148 (6) ◽  
pp. 516-522 ◽  
Author(s):  
J. Zhou ◽  
G. Guo ◽  
Y. Wang ◽  
R. Zhou
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Mode Control ◽  
Time Optimal

Discrete-Time Sliding Mode Control With Time-Varying Surface for Hard Disk Drives

2009 ◽  
Vol 17 (1) ◽  
pp. 175-183 ◽  
Author(s):  
Qinglei Hu ◽  
Qinglei Hu ◽  
Chunling Du ◽  
Lihua Xie ◽  
Youyi Wang
Keyword(s):  
Sliding Mode Control ◽  
Discrete Time ◽  
Sliding Mode ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Time Varying ◽  
Disk Drives ◽  
Mode Control

Robust time optimal controller design for hard disk drives

1999 ◽  
Vol 35 (5) ◽  
pp. 3598-3600 ◽  
Author(s):  
Bong Keun Kim ◽  
Wan Kyun Chung ◽  
Ho Seong Lee ◽  
Hyun-Taek Choi ◽  
Il Hong Suh ◽  
...  
Keyword(s):  
Controller Design ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Optimal Controller ◽  
Disk Drives ◽  
Time Optimal

Robust Tracking for Uncertain Flexible Structures Using Mixed Time-Optimal and Sliding Mode Control

1997 ◽  
Author(s):  
Nader Jalili ◽  
Nejat Olgac
Keyword(s):  
Robust Control ◽  
Sliding Mode Control ◽  
Sliding Mode ◽  
Flexible Structures ◽  
Body Motion ◽  
Flexible Beam ◽  
Two Stage ◽  
Mass System ◽  
Mode Control ◽  
Time Optimal

Abstract An improvement step in robust control is studied for uncertain (linear or nonlinear) systems. The proposed two-stage control scheme first modifies the original desired trajectory, and then imposes robustness against uncertainties in tracking this modified trajectory. For the trajectory modification stage, a simple scheme is considered : time optimal-rigid body motion (TO). The robustness stage is performed using Sliding Mode Control with Perturbation Estimation (SMCPE), an advanced form of SMC. This routine brings some strong features as demonstrated by examples. A rotating hub with flexible beam attachment is taken as the first example, and an undercontrolled two-mass system with a linear spring as the second. The comparative studies show superior results for the combination of TO-SMCPE over the basic SMCPE. Moreover, this two-stage control exhibits stable and highly advantages performance even for cases where H∞-type of robust control structure is declared unstable by earlier investigations.

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