Title :
A digital servo architecture with 8.8 bit resolution of position error signal for disk drives
Author :
Kimura, Hiroshi ; Nishiya, Takushi ; Nara, Takashi ; Komatsu, Tatsuya
Author_Institution :
Syst. Dev. Lab., Hitachi Ltd., Yokohama, Japan
Abstract :
A new digital servo signal processing architecture with 8.8 bit resolution of position error signal for disk drives is presented. It achieves an 8.8 bit resolution of the position error signal by use of a 6 bit ADC (analog to digital converter) for the data channel. This new architecture uses only a full wave rectifier and a divider. The burst signal is rectified in the analog domain before being sampled by the clock, which has a higher frequency than the servo frequency, in the ADC
Keywords :
analogue-digital conversion; floppy discs; hard discs; servomechanisms; signal resolution; signal sampling; 6 bit; ADC; analog to digital converter; burst signal; clock; data channel; digital servo signal processing architecture; disk drives; divider; full wave rectifier; position error signal; resolution; sampled signal; servo frequency; Analog-digital conversion; Circuits; Clocks; Digital signal processing; Disk drives; Frequency; Rectifiers; Sampling methods; Servomechanisms; Signal processing; Signal resolution; Signal sampling;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.644339
