This paper presents a tutorial-style review on the recent results about the disturbance
observer (DOB) in view of robust stabilization and recovery of the nominal performance. The …

In this work, we propose a Disturbance Observer (DOB) with a low pass filter with a single
tuning parameter. The DOB can be added to a standard PI controller that is assumed to be …

In the conventional feedback control system, the control accuracy is affected by the
measurement noise. In this article, a novel method is proposed for the purpose of the …

DESIGN OF DISTURBANCE OBSERVERS BASED ON THEIR IMPLEMENTABILITY IN
INDUSTRIAL CONTROL SYSTEMS Page 1 DESIGN OF DISTURBANCE OBSERVERS …

Nanopositioning and nanomeasuring machines are playing an increasingly important role in
the evolution of modern technologies in various fields. The Institute of Process Measurement …

This paper proposes a DC motor current control algorithm using a proportional-integral
linear quadratic tracking (LQT) controller with a disturbance observer for the electronic …

This article investigates the control problem of rejection and tracking unknown sinusoidal
signals for linear timeinvariant systems. The derived controller is in terms of state-derivative …

An automatic video tracker gives tracking error after processing video frames. Since frame
rate is limited to 25 or 30 Hz, tracking error update rate is also limited to this order. In …

In this paper, we present a new control structure which is obtained by adding an
appropriately designed filter to a conventional disturbance observer. The proposed …

I would like to thank Dr. Eiichi Saito, Dr. Kazumasa Miura, Dr. Satoshi Nishimura, and Mr.
Masaki Takeya. Dr. Eiichi Saito taught me how to research and study in the field of control …