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|Title:||Enhanced disturbance suppression in sampled-data systems and its application to high density data storage servos|
|Source:||Pang, C.K., Guo, G., Chen, B.M., Lee, T.H. (2007-05). Enhanced disturbance suppression in sampled-data systems and its application to high density data storage servos. Microsystem Technologies 13 (8-10) : 911-921. ScholarBank@NUS Repository. https://doi.org/10.1007/s00542-006-0302-0|
|Abstract:||Precise servo control systems require strong disturbance rejection capabilities for accurate positioning in the nanometer scale world today. In this paper, we propose an add-on DDO (disturbance decoupling observer) and DDOS (DO with extraneous sensor) for stronger disturbance suppression. Our proposed control methodology uses a nominal plant model and its inverse to reject input and output disturbances simultaneously in sampled-data systems. The plant inverse controller is approximated by tuning a single parameter. Experimental results on a PZT actuated servo system with air flow of mean speed of 50 m/s corresponding to 15,000 rpm in today's high end hard disk drives show an improvement of 69.2% of 3σ PES (position error signal) during track-following. © 2006 Springer-Verlag.|
|Source Title:||Microsystem Technologies|
|Appears in Collections:||Staff Publications|
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