The Proceedings of the Conference on Information, Intelligence and Precision Equipment : IIP
Online ISSN : 2424-3140
2001
Session ID : 202
Conference information
202 High-precision Tracking Control of Magnetic Head Positioner : 2nd Report : A positioning mechanism with zero-residue main-resonance and its control
Hiroshi YAMAURANaohiro NAKAMURAKyosuke ONO
Author information
CONFERENCE PROCEEDINGS FREE ACCESS

Details
Abstract
This paper describes a new head positioning mechanism of a magnetic disk storage. The new positioning mechanism is designed on the basis of the concept of the in-phase positioning mechanism. It has two voice coil motors ; one is a conventional VCM, main-actuator, and the other is a small VCM, sub-actuator, attached on the middle of the arm. Generally, such a dual-actuator system must be driven with two controllers, however, the proposed positioning mechanism requires only one controller for a zero-residue condition of the main-resonance. The way to control the proposed positioning mechanism is called cooperative control. In order to clarify the validity of the proposed positioning mechanism and the cooperative control, a H_∞ controller is designed and applied to the system. A 1.2kHz servo-bandwidth is obtained for 20kHz sampling frequency in a numerical example.
Content from these authors
© 2001 The Japan Society of Mechanical Engineers
Previous article Next article
feedback
Top