Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-09-19
2006-09-19
Tzeng, Fred F. (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
07110214
ABSTRACT:
Disclosed is a disk drive including an actuator having a coil, a head attached to the actuator, and a disk including at least a first track and a second track, and a processor for controlling operations in the disk drive including a seek operation from the first track to the second track in which the head is moved between the first track and the second track by the movement of the actuator. The processor under the control of a program generates a deceleration velocity profile for the seek operation that is determined based upon a deceleration velocity profile function that includes a back electromagnetic force (BEMF) model to take into account back electromagnetic forces (BEMFs) associated with the coil of the actuator such that the BEMFs are mathematically modeled. The head is commanded to seek to the second track utilizing the deceleration velocity profile function that includes the BEMF model.
REFERENCES:
patent: 5889629 (1999-03-01), Patton, III
patent: 6038096 (2000-03-01), Zhang et al.
patent: 6178060 (2001-01-01), Liu
patent: 6850386 (2005-02-01), Kovinskaya et al.
patent: 6937431 (2005-08-01), Galloway
patent: 2004/0264036 (2004-12-01), Ding et al.
Yi, Li, et al., “Two-Degree-of-Freedom Control with Robust Feedback Control for Hard Disk Servo Systems”, IEEE/ASME Transactions on Mechatronics, vol. 4, No. 1, pp. 17-24, Mar. 1999.
Nguyen David Dung Tien
Tu Kuang-Yang
Blakely & Sokoloff, Taylor & Zafman
Prejean, Esq. Jonathan E.
Tzeng Fred F.
Western Digital Technologies Inc.
LandOfFree
Disk drive to implement a seek operation utilizing a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disk drive to implement a seek operation utilizing a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk drive to implement a seek operation utilizing a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3539643