DIGITAL SERVO CONTROL SYSTEM FOR USE IN DISK DRIVES

摘要

A servo control system provides adaptive compensation for a variety of tracking and seek problems found in disk drives. The servo control system is ideally implemented in digital form for accuracy, sp eed and compactness. A first embodiment includes two modes, a tracking (or position) mode and a seek (or velocity) mode, each mode employing a variety of compensation functions. A second embodiment includes a single comprehensive control system wh ich functions during both tracking and seek operations.