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Dual-stage actuator servo control for high density disk drives

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3 Author(s)
Lin Guo ; Maxtor Corp., Milpitas, CA, USA ; Martin, D. ; Brunnett, D.

Four servo loop designs for disk drive dual-stage actuator systems are studied. The characteristics and benefits of each design are discussed. A parallel loop structure has been designed for a dual loop system with suspension based piezoelectric microactuators. Simulations in both frequency and time domains show dramatic performance improvements of the dual-actuator system over the conventional single loop servo system. The design was also implemented on a floating point DSP based experimental setup to show significant reduction of head motion achieved by using the dual-loop servo

Published in:

Advanced Intelligent Mechatronics, 1999. Proceedings. 1999 IEEE/ASME International Conference on

Date of Conference: