Active Vibration Control of a Microactuator for the Hard Disk Drive Using Self-Sensing Actuation

This paper presents the self-sensing control of a microactuator for hard disk drives. The microactuator uses a PZT actuator pair installed on the suspension assembly. The self-sensing microactuator forms a combined sensing and actuation mechanism. Direct velocity feedback and positive position feedback are used in this paper. Our experimental results show that both strategies are effective in suppressing vibrational modes and successfully demonstrate the feasibility of using a self-sensing actuator on an HDD suspension assembly.

[1]  Yoonsu Nam,et al.  Strain Rate Self-Sensing of a Piezoelectric Material with the Phase Delay Compensation , 2002 .

[2]  J. L. Fanson,et al.  Positive position feedback control for large space structures , 1990 .

[3]  Minoru Sasaki,et al.  System identification and controller design of a self-sensing piezoelectric cantilever structure , 2001, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[4]  Guoxiao Guo,et al.  Self-sensing actuation for nanopositioning and active-mode damping in dual-stage HDDs , 2006, IEEE/ASME Transactions on Mechatronics.

[5]  Roberto Horowitz,et al.  Track-following control with active vibration damping of a PZT-actuated suspension dual-stage servo system , 2003, Proceedings of the 2003 American Control Conference, 2003..

[6]  Minoru Sasaki,et al.  Two-degree-of-freedom control of a self-sensing micro-actuator for HDD , 2011 .

[7]  R. Horowitz,et al.  Vibration control of a PZT actuated suspension dual-stage servo system using a PZT sensor , 2002, Digest of the Asia-Pacific Magnetic Recording Conference.

[8]  Gangbing Song,et al.  VIBRATION SUPPRESSION OF FLEXIBLE SPACECRAFT DURING ATTITUDE CONTROL , 2001 .

[9]  Minoru Sasaki,et al.  Control of a micro-actuator for hard disk drives using self-sensing actuator , 2006 .

[10]  T. K. Caughey,et al.  On the stability problem caused by finite actuator dynamics in the collocated control of large space structures , 1985 .

[11]  Wei-Hsin Liao,et al.  Self-sensing actuators for adaptive vibration control of hard disk drives , 2008, 2008 IEEE/ASME International Conference on Advanced Intelligent Mechatronics.

[12]  Minoru Sasaki,et al.  Active Vibration Control of a Micro-Actuator for Hard Disk Drives using Self-Sensing Actuator , 2008 .

[13]  Ephrahim Garcia,et al.  A Self-Sensing Piezoelectric Actuator for Collocated Control , 1992 .

[14]  M. Balas.  Direct Velocity Feedback Control of Large Space Structures , 1979 .

[15]  Yoon Su Nam,et al.  Strain rate self-sensing for a cantilevered piezoelectric beam , 2002 .