论文部分内容阅读
磁盘驱动装置的读写头是“漂浮”在一厚度为0.2微米的空气层上的,这一空气层靠磁盘的快速旋转来维持。为了提高读写精度,保持读写头与磁性材料之间的正确距离是很关键的,特别是在高比特密度的情况更是如此。维持二者之间的正确距离也就使读写头猛烈撞击磁盘的可能性减小,这种撞击会破坏昂贵的磁盘,还会使读写头过早地磨损。一家磁盘驱动装置的主要生产者和使用者——西德西门子公司演示了一种样机系统,它能在装置运转的同时用光学方法检查读写头与磁性介质间的间隙,该系统被用于驱动装置的试制和检验。
The disk drive read-write head is “floating” on an air layer 0.2 microns thick, which is maintained by the rapid rotation of the disk. In order to improve the reading and writing accuracy, it is crucial to maintain the correct distance between the head and the magnetic material, especially at high bit densities. Maintaining the correct distance between them also reduces the likelihood of the read / write head violently hitting the disk, which can damage expensive disks and can lead to premature wear of the head. West Germany, the main producer and user of a disk drive, demonstrated a prototype system that optically checks the gap between the head and the magnetic medium while the unit is running. This system is used Trial drive and test drive.