Force sensorless robust tracking servo system suppressing periodic disturbance and sudden disturbanc

This paper proposes a new force sensorless robust tracking servo system, which detects and suppresses both the periodic disturbance and the sudden disturbance without force sensor. The proposed system estimates both the periodic disturbance and the sudden disturbance and the sudden disturbance by using a new sudden disturbance observer and the memory of tracking error. In the proposed system, the influence of sudden disturbance is suppressed by the proposed sudden disturbance observer. On the other hand, the influence of periodic disturbance is suppressed by means of ZPET feed-forward servo system. The experimental results point out that the proposed tracking servo system has a precise tracking response against both the periodic disturbance and the sudden disturbance. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 166(1): 82–90, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20614

[1]  Masaharu Ogawa,et al.  High-precision tracking control system for digital video disk players , 1995 .

[2]  K. Ohishi,et al.  Robust speed control system considering vibration suppression caused by angular transmission error of planetary gear , 2002 .

[3]  Kiyoshi Ohishi,et al.  High Speed Robust Tracking Servo System for an Optical Disk Recording System , 2002 .

[4]  Kiyoshi Ohishi,et al.  Robust high speed tracking servo system for optical disk system , 2000, 6th International Workshop on Advanced Motion Control. Proceedings (Cat. No.00TH8494).

[5]  Masayoshi Tomizuka,et al.  Zero Phase Error Tracking Algorithm for Digital Control , 1987 .

[6]  Masayoshi Tomizuka,et al.  Model based prediction, preview and robust controls in motion control systems , 1996, Proceedings of 4th IEEE International Workshop on Advanced Motion Control - AMC '96 - MIE.

[7]  Kiyoshi Ohishi,et al.  Improvement of Performance of a Tracking Servo System for an Optical Disk Drive , 2000 .

[8]  Kiyoshi Ohishi,et al.  Robust feedforward tracking servo system for optical disk recording system , 2001, IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243).

[9]  H. Hirai,et al.  A mode-switching control for motion control and its application to disk drives: design of optimal mode-switching conditions , 1998 .

[10]  Kiyoshi Ohishi,et al.  Feed-Forward Tracking Servo System for High-Data-Rate Optical Recording , 2003 .

[11]  Kiyoshi Ohishi,et al.  Robust Feedfoward Control System considering Sudden Disturbance for Optical Disk Recording System , 2004 .