Disk storage apparatus and method for servo controlling

摘要

According to one embodiment, a disk storage apparatus includes an interrupt controller and a servo controller. The interrupt controller determines whether or not to carry out servo interrupt processing and holds a number of negative results of the determination. The servo controller includes an internal model configured to calculate an estimated current position of the head. The servo controller corrects a state of the internal model based on the number of negative results of the determination and performs head positioning control based on a result of a calculation of the internal model, if the result of the determination by the interrupt controller is affirmative.

主权项

1. A disk storage apparatus comprising:
an interrupt controller configured to determine whether to permit or reject servo interrupt processing and to store a number of rejection results of the determination; and a servo controller comprising an internal model configured to follow a detected position of a head to calculate an estimated current position, which is a position error with respect to a target position of the head, wherein the servo controller is configured to correct a state of the internal model based on the number of rejection results of the determination, which is held by the interrupt controller, if the result of the determination by the interrupt controller is permission, and perform head positioning control based on a result of a calculation of the internal model.