Title :
A comprehensive time domain simulation tool for hard disk drive TPI prediction and mechanical/servo enhancement
Author :
Guo, Lin ; Lee, Ho Seong ; Hudson, Andrew ; Chen, Shu-Hao
Author_Institution :
Maxtor Corp., Milpitas, CA, USA
fDate :
3/1/1999 12:00:00 AM
Abstract :
A comprehensive time domain simulation tool has been developed to provide a realistic simulation of hard disk drive track following servo performance. It serves as a “virtual drive” which allows the prediction of achievable TPI for future products, and off-track shock/vibration characteristics with a given mechanical platform and servo controller. It also provides a convenient tool for enhancing mechanical and servo designs. The simulation tool has three main modules. The methodology used in identifying them is detailed. The simulator was developed based on drive level and component level measurement of position error signal (PES) and mechanical vibrations, and an electrical noise recovery scheme. Simulation and experimental results have been used to evaluate the accuracy of the simulator
Keywords :
digital simulation; disc drives; hard discs; servomechanisms; time-domain analysis; vibrations; TPI prediction; component level measurement; drive level; electrical noise recovery scheme; hard disk drive; mechanical vibrations; mechanical/servo enhancement; off-track shock/vibration characteristics; position error signal; servo controller; simulation tool; time domain simulation tool; track following servo performance; virtual drive; Drives; Electric variables measurement; Hard disks; Level measurement; Mathematical model; Mechanical variables measurement; Noise level; Predictive models; Servomechanisms; Vibration measurement;
Journal_Title :
Magnetics, IEEE Transactions on
