A head positioning apparatus capable of positioning a head at high speed and
with
high accuracy is provided. The head positioning apparatus includes a magnetic head,
a head supporting mechanism, a coarse actuator, a fine actuator, a head position
detection part, a fine movement control system for controlling the fine actuator
based on the head position detected by the head position detection part, a head
moving distance estimation part estimating the head moving distance representing
the distance the magnetic head moves, and the coarse movement control system for
controlling the coarse actuator based on the head moving distance estimated by
the head moving distance estimation part.