Track following control using nonlinear model predictive control in hard disk drives

In this paper, a Nonlinear Model Predictive Control (NMPC) is proposed to control a single stage Voice-Coil-Motor (VCM) of a Hard-Disk-Drive (HDD). Due to its fast settling time and its robustness, this controller is suggested to be applied for the first time to control a R/W head of an HDD. To highlight the good performance and characteristics of the NMPC, a comparative study with a standard PID control is presented. The two control methodologies were evaluated in nominal conditions as well as in other situations such as disturbances and uncertainties on the plant model parameters. In all cases, NMPC presents much better simulation results in term of speed and robustness in the presence of unexpected perturbations and parameters' change.

[1]  A. Packard,et al.  Nonlinear receding horizon control of F-16 aircraft , 2001, Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148).

[2]  Tong Heng Lee,et al.  Modeling and compensation of nonlinearities and friction in a micro hard disk drive servo system with nonlinear feedback control , 2005, IEEE Transactions on Control Systems Technology.

[3]  Tong Heng Lee,et al.  Hard Disk Drive Servo Systems (Advances in Industrial Control) , 2006 .

[4]  John W. Eaton,et al.  Model Predictive Control of Chemical Processes , 1991, 1991 American Control Conference.

[5]  Hiroshi Fujimoto,et al.  Proposal of seeking control of hard disk drives based on perfect tracking control using multirate feedforward control , 2000, 6th International Workshop on Advanced Motion Control. Proceedings (Cat. No.00TH8494).

[6]  Marko Bacic,et al.  Model predictive control , 2003 .

[7]  Tong Heng Lee,et al.  A new approach to the design of mode switching control in hard disk drive servo systems , 2002 .

[8]  Roberto Horowitz,et al.  Optimal H∞ control for hard disk drives with an irregular sampling rate , 2011, Proceedings of the 2011 American Control Conference.

[9]  Maarten Steinbuch,et al.  Repetitive control for systems with uncertain period-time , 2002, Autom..

[10]  H. Numasato,et al.  Adaptive control of dual-stage actuator for hard disk drives , 2004, Proceedings of the 2004 American Control Conference.

[11]  J. Rawlings,et al.  Model-predictive control of chemical processes , 1992 .

[12]  Choong Woo Lee,et al.  Model Prediction Based Dual-Stage Actuator Control in Discrete-Time Domain , 2011, IEEE Transactions on Magnetics.

[13]  Yuhong Huang,et al.  Feed-forward algorithms for time-optimal settling of hard disk drive servo systems , 1997, Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066).

[14]  Liuping Wang,et al.  Model Predictive Control System Design and Implementation Using MATLAB , 2009 .

[15]  Kevin L. Moore,et al.  Iterative learning control and repetitive control in hard disk drive industry—A tutorial , 2008 .

[16]  Yutaka Hori,et al.  Vibration suppression and optimal repetitive disturbance rejection control in semi-Nyquist frequency region using multirate sampling control , 2000, Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187).

[17]  Shiro Masuda,et al.  TRACK-SEEKING CONTROL OF A HARD DISK DRIVE USING MULTIRATE GENERALIZED PREDICTIVE CONTROL TO IMPROVE INTERSAMPLE PERFORMANCE , 2009 .

[18]  Tong Heng Lee,et al.  A microdrive track following controller design using robust and perfect tracking control with nonlinear compensation , 2005 .

[19]  John W. Eaton,et al.  Model Predictive Control of Chemical Processes , 1991 .

[20]  A. Packard,et al.  Nonlinear Receding Horizon Control of an F-16 Aircraft , 2002 .