Hysteresis modeling and compensation of PZT milliactuator in hard disk drives

Dual-stage actuation consisting of a PZT Microactuator (MA) and a Voice Coil Motor (VCM) has been used to improve the servo bandwidth and the disturbance rejections of Hard Disk Drivers (HDDs). However, the hysteresis in PZT MA limits the performance that can be achieved. In this paper, a Hammerstein model structure consisting of static hysteresis nonlinear block and dynamic linear block is used to model the PZT MA in HDDs and the identification method is also given. The nonlinear subsystem in the Hammerstein model is represented by Modified Prandtl-Ishlinskii (MPI) hysteresis model. It is proved that the proposed model is equivalent to the physical system. A hysteresis compensator is designed based on the proposed model. By the hysteresis compensation, the effects of hysteresis on the frequency responses of the PZT MA are measured. It is shown that apparent phase lead is achieved by hysteresis compensation, which is useful to improve the performance of control system.

[1]  Roberto Horowitz,et al.  Mechatronics of electrostatic microactuators for computer disk drive dual-stage servo systems , 2001 .

[2]  M. Omizo,et al.  Modeling , 1983, Encyclopedic Dictionary of Archaeology.

[3]  Chunling Du,et al.  Lowering the hump of sensitivity functions for discrete-time dual-stage systems , 2005, IEEE Transactions on Control Systems Technology.

[4]  R. Horowitz,et al.  A comparison of multirate robust track-following control synthesis techniques for dual-stage and multi-sensing servo systems in hard disk drives , 2006, 2006 American Control Conference.

[5]  Ralph C. Smith,et al.  Quantification of hysteresis and nonlinear effects on the frequency response of ferroelectric and ferromagnetic materials , 2009 .

[6]  F. Ikhouane,et al.  Systems with Hysteresis: Analysis, Identification and Control Using the Bouc-Wen Model , 2007 .

[7]  A. Visintin.  Differential models of hysteresis , 1994 .

[8]  Micky Rakotondrabe.  Classical Prandtl-Ishlinskii modeling and inverse multiplicative structure to compensate hysteresis in piezoactuators , 2012, 2012 American Control Conference (ACC).

[9]  William C. Messner,et al.  On compensator design for linear time-invariant dual-input single-output systems , 2001 .

[10]  Fayal Ikhouane,et al.  Systems with Hysteresis , 2007 .

[11]  Mattias Nordin,et al.  Controlling mechanical systems with backlash - a survey , 2002, Autom..

[12]  Vincent Hayward,et al.  Phase control approach to hysteresis reduction , 2001, IEEE Trans. Control. Syst. Technol..

[13]  Augusto Visintin.  Genesis of Hysteresis , 1994 .

[14]  Tong Heng Lee,et al.  Design and implementation of a dual-stage actuated HDD servo system via composite nonlinear control approach , 2004 .

[15]  Zhen Zhang,et al.  Stress-Dependent Hysteresis Modeling and Tracking Control of Giant Magnetostrictive Actuator for Periodic Reference Input , 2008 .

[16]  Ben M. Chen,et al.  Discrete-time LQG/LTR dual-stage controller design and implementation for high track density HDDs , 1999, Proceedings of the 1999 American Control Conference (Cat. No. 99CH36251).

[17]  C. Natale,et al.  Effects of hysteresis compensation in feedback control systems , 2003 .

[18]  Mayergoyz,et al.  Mathematical models of hysteresis. , 1986, Physical review letters.

[19]  Dennis S. Bernstein,et al.  Semilinear Duhem model for rate-independent and rate-dependent hysteresis , 2005, IEEE Transactions on Automatic Control.

[20]  David Hyunchul Shim,et al.  Mixed-objective optimization of track-following controllers using linear matrix inequalities , 2003, Proceedings of the 2003 American Control Conference, 2003..

[21]  Klaus Kuhnen,et al.  Modeling, Identification and Compensation of Complex Hysteretic Nonlinearities: A Modified Prandtl - Ishlinskii Approach , 2003, Eur. J. Control.

[22]  Sangchul Won,et al.  Hysteresis compensation of piezoelectric actuators in dual-stage Hard Disk Drives , 2011, 2011 8th Asian Control Conference (ASCC).

[23]  Long Chen,et al.  Design for control: A concurrent engineering approach for mechatronic systems design , 2001 .