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Enhanced Performance of Disturbance Observer by Embedding a Filter and Its Application to Hard Disk Drive
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 Title & Authors
Enhanced Performance of Disturbance Observer by Embedding a Filter and Its Application to Hard Disk Drive
Ha, Jongsoo; Park, Gyunghoon; Shim, Hyungbo;
In this paper, we present a new control structure which is obtained by adding an appropriately designed filter to a conventional disturbance observer. The proposed controlled system preserves advantages of a system with the conventional disturbance observer; disturbance rejection and nominal performance recovery. In particular, by embedding the filter, the disturbance rejection performance is enhanced compared with that of the classical disturbance observer-based controlled system. Moreover, we suggest a condition for the robust internal stability of the considered system in this paper. Simulation results regarding an effect of relatively high-frequency disturbance on hard disk drive are also presented.
hard disk drive;disturbance observer;sonic vibration;high frequency disturbance;
 Cited by
H. Shim and N. H. Jo, "An almost necessary and sufficient condition for robust stability of closed-loop systems with disturbance observer," Automatica, vol. 45, no. 1, pp. 296-299, Jan. 2009. crossref(new window)

N. H. Jo, Y. Joo, and H. Shim, "A study of disturbance observers with unknown relative degree of the plant," Automatica, vol. 50, no. 6, pp. 1730-1734, Jun. 2014. crossref(new window)

T. Umeno and Y. Hori, "Robust speed control of dc servomotors using modern two degrees-of-freedom controller design," IEEE Trans. on Industrial Electronics, vol. 38, no. 5, pp. 363-368, Oct. 1991. crossref(new window)

K. Zhou and J. C. Doyle, Essentials of Robust Control, Prentice hall, 1998.

T. Yamaguchi, M. Hirata, and J. C. K. Pang, High-Speed Precision Motion Control, CRC press, 2011.

A. Al Mamun, G. Guo, and C.Bi, Hard Disk Drive: Mechatronics and Control, CRC press, 2006.

B. M. Chen, T. Lee, K. Peng, and V. Venkataramanan, Hard Disk Drive Servo Systems, Springer, 2006.

Y. Y. Hu, S. Yoshida, S. Nakamura, K. Watanabe, W. Z. Lin, E. T. Ong, and J. Q. Mou, "Analysis of built-in speaker-induced structural-acoustic vibration of hard disk drives in Notebook PCs," IEEE Trans. Magnetics, vol. 45, no. 11, pp. 4950-4955, Nov. 2009. crossref(new window)

J. Q. Mou, F. Lai, I. B. L. See, and W. Z. Lin, "Analysis of notebook computer chassis design for hard disk drive and speaker mounting," In Proc. of International Conference on Computer Design, pp. 44-48, 2012.

J. Back and H. Shim, "Design on nonlinear disturbance observer guaranteeing global stability and robust stability condition," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 17, no. 12, pp. 1188-1193, Dec. 2011. crossref(new window)

J. Back and H. Shim, "Adding robustness to nominal outputfeedback controllers for uncertain nonlinear systems: A nonlinear version of disturbance observer," Automatica, vol. 44, no. 10, pp. 2528-2537, Oct. 2008. crossref(new window)

J. Han, H. Kim, Y. Joo, N. H. Jo, and J. Seo, "A simple noise reduction disturbance observer and Q-filter design for internal stability," Proc. of the International Conference on Control, Automation and Systems, pp. 755-760, Oct. 2013.

N. H. Jo and H. Shim, "Robust stabilization via disturbance observer with noise reduction," Proc. of European Control Conference, pp. 2861-2866, Jul. 2013.

G. Park, Y. Joo, H. Shim, and J. Back, "Rejection of polynomial-in-time disturbances via disturbance observer with guaranteed robust stability," Proc. of Conference on Decision and Control, pp. 949-954, Dec. 2012.

K. Yamada, S. Komada, M. Ishida, and T. Hori, "Characteristics of servo system using high order disturbance observer," Proc. of Conference on Decision and Control, pp. 3252-3257, Dec. 1996.

J.-S. Kim and J. Back, "Reduced-order disturbance observer based coordinated tracking of uncertain heterogeneous multiagent systems," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 20, no. 12, pp. 1231-1237, Dec. 2014. crossref(new window)

Y.-G. Bae and S. Jung, "Compensation for position control of a robot manipulator using a modified disturbance observer (DOB) based on an accelerometer," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 19, no. 5, pp. 462-467, May 2013. crossref(new window)