Raymond de Callafon
Associate Professor, Department of MAE
Phone: 858-534-3166
Fax: 858-822-3107
email: Callafon@ucsd.edu
Website: Callafon
Office: CMRR
Lab 2A
University of California, San Diego
Dept. of Mechanical and Aerospace Engineering
9500 Gilman Drive, 0411
La Jolla, CA 92093-0411
Research Interests
High Track Density Magnetic Recording:
- Modeling and control of piezo-electric mico-actuator actuator
- Systematic dual-stage feedback control design
- Estimation of disturbances in a hard disk drive and in a linear tape system
Biography
Raymond de Callafon received his Ph.D. degree in Mechanical Engineering from Delft University of Technology, the Netherlands in October 1998. After one year as a research assistant at UCSD in 1997, he joined the MAE faculty in the Dynamic Systems and Control Program in 1998.
Publications
CMRR Related Publications
R.A. de Callafon, D.H.F. Harper, R.E. Skelton, and F.E. Talke, “Experimental Modeling and Feedback Control of a Piezobased Milliactuator,” Journal of Information Storage and Processing Systems, Vol. 1, No. 3, pp. 217-24, (July 1999)
D.H.F. Harper, R.A. de Callafon, R.E. Skelton, and F.E. Talke, “Piezoelectric Stack-Based Microactuator for Hard Disk Drives,” Journal of Information Storage and Processing Systems, Vol. 1, No. 4, pp. 329-32, (December 1999)
M. Rotunno, and R.A. de Callafon, “Fixed Order H∞ Control Design for Dual-Stage Hard Disk Drives,” Proceedings of the 39th Conference on Decision and Control 2000, Vol. 4, pp. 3118-3119, (December 2000) [PDF uscd only]
M. Rotunno, R.A. de Callafon, and F.E. Talke, “Comparison and Design of Servo Controllers for Dual-Stage Actuators in Hard Disk Drives,” IEEE Transactions on Magnetics, Vol. 39, No. 5, pp. 2597-2599, (September 2003) [PDF ucsd only]
A.P. Teerjuis, S.J.M. Cools, and R.A. de Callafon, “Reduction of Flow-Induced Suspension Vibrations in a Hard Disk Drive by Dual-Stage Suspension Control,” IEEE Transactions on Magnetics, Vol. 39, No. 5, pp. 2237-2239, (September 2003) [PDF ucsd only]
J. Zeng, and R.A. de Callafon, “Servo Experiments for Modeling of Actuator and Windage Dynamics in a Hard Disk Drive,” Proc. IEEE International Conference on Mechatronics, Istanbul, Turkey, pp. 218-223, (June 2004) [PDF ucsd only]
J. Jose, R.J. Taylor, R.A. de Callafon, and F.E. Talke, “Characterization of Lateral Tape Motion and Disturbances in the Servo Position Error Signal of a Linear Tape Drive,” Tribology International, Vol. 38, No. 6-7, pp. 625-632, (June-July 2005) [PDF ucsd only]
R.A. de Callafon, R. Nagamune, and R. Horowitz, “Robust Dynamic Modeling and Control of Dual-Stage Actuators,” IEEE Transactions on Magnetics, Vol. 42, No. 2, pp. 247-254, (February 2006) [PDF ucsd only]
M.R. Graham, and R.A. de Callafon, “An Iterative Learning Design for Repeatable Runout Cancellation in Disk Drives,” IEEE Transactions on Control Systems Technology, Vol. 14 No. 3, pp. 474-482, (May 2006) [PDF ucsd only]
M.R. Graham, and R.A. De Callafon, “Identification and Low-Order Control of Hard Disk Drives,” IEEE International Magnetics conference Intermag 2006, p.606, (May 2006) [PDF ucsd only]
M.R. Graham, R.A. de Callafon, and L. Shrinkle, “An Iterative Learning Controller for Reduction of Repeatable Runout in Hard Disk Drives,” American control Conference 2006, pp. 576-581, (June 2006) [PDF ucsd only]
M. Rotunno, R. Oboe, and R.A. de Callafon, “Modeling Product Variations in Hard Disk Drive Micro-Actuator Suspensions,” Microsystem Technologies, Vol. 12, No. 9, pp. 803-813, (August 2006) [PDF ucsd only]
J. Zeng, and R.A. de Callafon, “Control relevant estimation of plant and disturbance dynamics - model approximation on the basis of closed-loop data,” Automatica, Vol. 42 No. 11, pp 1951-1957, (November 2006) . [PDF ucsd only]
M. Claes, M.R.Graham, and R.A. de Callafon, “Frequency Domain Subspace Identification of a Tape Servo System,”
Microsystem Technologies, Vol.13, No.8-10, pp. 1439-47, (May 2007) [PDF ucsd only]
R. Antonello, R. Oboe, and R.A. de Callafon, “An Identification Experiment for Simultaneous Estimation of Low-Order Actuator and Windage Models in a Hard Disk Drive,” IEEE International Symposium on Industrial Electronics 2007,
pp. 3102-3107, (June 2007) [PDF ucsd only]
B. Raeymaekers, M.R. Graham, R.A. de Callafon, and F.E. Talke, “Design of a Dual Stage Actuator Tape Head with High-Bandwidth Track Following Capability,” submitted to Microsystems Technologies (2007)
Research Group
Graduate Students
Student Name: Matthew Graham
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Student Name: Charles Kinney
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