Abstract
This paper describes a magnetic head positioning mechanism in hard disk storages, which consists of a novel dual-stage actuator and uses drag forces acting on the contact slider. The contact slider is designed to be rotated by the drag forces and the rotation of the slider can be used as a fine actuator for the head positioning. First, the equations of motion of proposed positioning mechanism were derived. Static characteristics of this mechanism were investigated with the equations of motion. The equations were also linearlized and a frequency response of this mechanism was investigated. Next, transient responses were calculated for a certain variation of the drag forces. As a result, ability of the proposed positioning mechanism to position the magnetic head to a narrow recording track in near future was shown.
