METHOD FOR CONTROLLING DIGITAL CLOSED SERVO LOOP SYSTEM, DIGITAL CLOSED SERVO LOOP SYSTEM, AND DISK STORAGE APPARATUS USING THE SYSTEM.

摘要

A CONTROLLED VARIABLE IS DETECTED AT EACH PREDETERMINED TIMING BY A DETECTING SECTION 2, AND THE CONTROLLED VARIABLE IS COMPARED WITH A TARGET VALUE BY A COMPARATOR 3 TO OBTAIN A DEVIATION. A MANIPULATED VARIABLE IS CALCUTED, BASED ON THE DEVIATION, BY A COMPENSATING SECTION 4, AND A HEIGHT H CORRESPONDING TO THE MANIPULATED VARIABLE IS CALCULATED BY A CONTROLLING SECTION 5. A MANIPULATED PULSE HAVING THE HEIGHT H AND A PREDETERMINED WIDTH W IS PROVIDED TO A CONTROLLED SYSTEM 6 BY THE CONTROLLING SECTION 5.(FIG 1)