%0 Journal Article %T The Discrete-Time Sliding Mode Control with Computation Time Delay for Repeatable Run-Out Compensation of Hard Disk Drives %A T. H. Yan %A B. He %A X. D. Chen %A X. S. Xu %J Mathematical Problems in Engineering %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/505846 %U http://dx.doi.org/10.1155/2013/505846