概述目前光盘存储技术发展很快,可作为计算机外存设备的只读型光盘(如 CD ROM 和一次可写光盘(WORM)已得到广泛应用,可擦型光盘(Erasable Qptical D-isk),也已问世,作为光盘守储技术之一的精密伺服技术也发展到了一个较高的水平,对光盘伺服技术的研究一直很受重视,在国际上,这方面的文章发表了很多,主要至力于提高伺服精度,近年来,国内也陆续 Overview At present, CD-ROM storage technology is developing rapidly. CD-ROMs and WORM (Compact Disk-once) are widely used as external storage devices for computers. Erasable Qptical D-isk Has come out, as one of the CD-ROM storage technology has also reached a high level of precision servo technology, CD-ROM servo technology has been highly valued research in the international arena, published a lot of articles in this area, mainly to focus on Improve the servo precision, in recent years, China also one after another