Translator Disclaimer
27 May 1982 Optical Disk Servo Control System
Author Affiliations +
Proceedings Volume 0329, Optical Disk Technology; (1982) https://doi.org/10.1117/12.933378
Event: 1982 Los Angeles Technical Symposium, 1982, Los Angeles, United States
Abstract
The optical memory servo control system performs five major functions. They are micro-processor control, disk spindle speed control, focusing, seeking and radial track-following. Preliminary laboratory results show that an average seek time of 100 msec and one track seek of 300 μsec were achieved over a total of 40,000 tracks. Radial tracking with an error less than 0.1 μm was obtained through a tracking servo. These radial tracking and random access capabilities were achieved by combining the use of a specially designed galvanometer and a translator carriage. Normal operating focus error of less than 0.1 μm was also obtained. Finally, the overall servo control system is greatly enchanced through a microprocessor controller with an adaptive control algorithm. This provides high flexibility to the servo system design in order to meet the stringent performance requirements of an optical memory system. A mathematical model of the complete servo system was developed. The analytical information was used to design and fabricate a laboratory model optical memory device.
© (1982) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Der-Chang Hsieh, Edward V. LaBudde, and Robert J. Johnson "Optical Disk Servo Control System", Proc. SPIE 0329, Optical Disk Technology, (27 May 1982); doi: 10.1117/12.933378; https://doi.org/10.1117/12.933378
PROCEEDINGS
8 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Fast Access Method Of Optical Disk Memory
Proceedings of SPIE (December 31 1986)
Research on phase locked loop in optical memory servo system
Proceedings of SPIE (September 15 2005)
Optical Disk Memory System
Proceedings of SPIE (May 26 1982)

Back to Top