Affiliations: [a] Department of Human and Information Systems
Engineering, Faculty of Engineering Gifu University, Gifu, Japan | [b] Department of Mechanical Engineering, Kangwon National
University, Chunchon, Korea | [c] Department of Mechanical Systems Engineering, Faculty
of Engineering Gifu University, Gifu, Japan
Correspondence:
[*]
Corresponding author. Department of Human and Information
Systems Engineering, Faculty of Engineering Gifu University, 1-1 Yanagido,
Gifu, Japan. Tel.: +81 58 293 2541; Fax: +81 58 230 1930; E-mail: sasaki@gifu-u.ac.jp
Abstract: The present paper describes a two-degree-of-freedom control of a
self-sensing micro-actuator for a dual-stage hard disk drive. The
two-degree-of-freedom control system is comprised of a feedforward controller
and a feedback controller. Two controllers are designed for the
two-degree-of-freedom control system, one using the inverse dynamic model for
the feedforward controller and one for the feedback controller using a
self-sensing signal from the actuator itself. The micro-actuator uses a PZT
actuator pair, installed on the assembly of the suspension. The self-sensing
micro-actuator can be used to form a combined actuation and sensing mechanism.
Experimental results show that the two-degree-of-freedom control approach can
be used effectively for the control of the self-sensing micro-actuator
system.
