Seeking control of hard disk drive by perfect tracking using multirate sampling control

H Fujimoto, Y Hori, S Nakagawa… - IEEJ Transactions on …, 2000 - jstage.jst.go.jp
In this paper, novel multirate two-degree-of-freedom controllers are proposed for digital
control systems, where it is restricted that the speed of the A/D converters are slower than …

Application of disturbance observer for head positioning control system of disk drives

Y HAMADA, H OTSUKI, S SAITO… - Transactions of the …, 1994 - jstage.jst.go.jp
We confirmed that the head positioning control system using disturbance observer can
reduce tracking error caused by vibration through experiments. Still more, we confirmed that …

Design of H∞ Controllers for Plants Having Poles on the jω Axis H Motion Control

T Mita, M Hirata, VB SB - IEEJ Transactions on Industry Applications, 1995 - jstage.jst.go.jp
抄録 When a given plant has poles on the jω axis in the two block mixed sensitivity problem
setting, they become the zeros of G 12 or G 21 in the generalized plant, and the H∞ control …

Following control of a hard disk drive using sampled-data h∞ control theory

M HIRATA, T ATSUMI, A MURASE… - Transactions of the …, 2000 - jstage.jst.go.jp
抄録 In the head positioning control of hard disk drives, the information of the head position
is embedded radially on the magnetic disk that eliminates the capacity of the hard disk drive …

A Design method for Two-Degree-of-Freedom Controller using the Dynamical Model of the Feedback Controller

M Hirata, L KZ, T Mita - IEEJ Transactions on Industry Applications, 1995 - jstage.jst.go.jp
A Design method for Two-Degree-of-Freedom Controller using the Dynamical Model of the
Feedback Controller Mitsuo Hirata, Student Member, KZ Liu, Member,(Chiba University) …

Design of H∞ servo compensator for a cart and inverted flexible pendulum system

H NISHIMURA, O ONUKI, K NONAMI… - Transactions of the …, 1996 - jstage.jst.go.jp
In this paper, for stabilizing and positioning control of a cart and inverted flexible pendulum
system we formulate H•‡ servo compensator where displacement signals are used as the …

Position control of a hard disk drive with a neuro-PID controller

T Fujinaka, S Shimizu, M Yoshioka… - IEEJ Transactions on …, 2001 - jstage.jst.go.jp
A neuro-PID control is applied to the position control of a hard disk drive. The PID gains are
tuned using a neural network in such a way that the tracking error is reduced while avoiding …

Ultra-High Speed Positioning Control of a Piezoelectirc Actuator by Using Discrete-Time Two-Degree-of-Freedom H∞ Control

M Hirata, D Tang, K Nonami, H Ogawa… - IEEJ Transactions on …, 2001 - jstage.jst.go.jp
In this paper, we develop a new control design method to achieve the both of high-speed
and high-precision response for piezoelectric actuator by using the discrete-time H,,, control …

A Design Method of Compensation Law for Linear Constrained Systems

N HARA, A KOJIMA - Transactions of the Society of Instrument and …, 2005 - jstage.jst.go.jp
This paper deals with a design method of compensation law for linear constrained systems.
By employing singular value decomposition of linear systems, we provide a design method …

A Design Method of Robust Model Matching Control for Continuoun-Time Systems in the Presence of Unmodeled Dynamics

J LU, N MASUDA, T YAHAGI - IEEJ Transactions on Electronics …, 1998 - jstage.jst.go.jp
This paper presents a method for robust model matching control for linear continuou-time
sys tems in the presence of unmodeled dynamics. This scheme can robustly control the …