Title :
Motion-control: the power side of disk drives
Author_Institution :
Memory Products, Network & Comput. Storage, Infineon Technol., Austria
fDate :
6/23/1905 12:00:00 AM
Abstract :
Pure motion-control at the speed and precision required for disk drives is difficult by itself, but the problems become even worse when it comes to emergency conditions like the loss of supply voltages. To prevent the head from crashing into or sticking on the media in this case, it has to be moved to a park position-still with broken power supply. This and many other functions are integrated in the motion-control circuit, covering the range from power/analog to digital circuitry
Keywords :
disc drives; electric current control; hard discs; motion control; current control; emergency conditions; hard disk drives; motion-control; precision; tracking; velocity control; voice coil motor; Circuits; Disk drives; Motion control; Permanent magnet motors; Phase detection; Pulse width modulation; Rotors; Silicon; Switches; Voltage;
Conference_Titel :
Computer Design, 2001. ICCD 2001. Proceedings. 2001 International Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7695-1200-3
DOI :
10.1109/ICCD.2001.955039
