An adaptive feedforward controller design for tracking repeatable runout (RRO) in bit patterned media recording (BMPR) is proposed for single stage hard disk drives (HDD). The technique is based on a modified filtered-x least mean squares (MFX-LMS) algorithm with deterministic periodic input, and a novel variable step size that boosts both the convergence rate and the steady state error. Comprehensive simulations are provided to show the effectiveness of the proposed method.
- Information Storage and Processing Systems Division
Repeatable Runout Following in Bit Patterned Media Recording
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Shahsavari, B, Keikha, E, Zhang, F, & Horowitz, R. "Repeatable Runout Following in Bit Patterned Media Recording." Proceedings of the ASME 2014 Conference on Information Storage and Processing Systems. 2014 Conference on Information Storage and Processing Systems. Santa Clara, California, USA. June 23–24, 2014. V001T03A001. ASME. https://doi.org/10.1115/ISPS2014-6946
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