Disturbance Observer-based Robust Control and Its Applications: 35th Anniversary Overview

TL;DR

This paper reviews the development and applications of Disturbance Observer-based robust control over the past 35 years, highlighting analysis, synthesis techniques, and engineering uses.

Contribution

It provides a comprehensive survey of the origins, major results, and unified framework for analyzing and designing Disturbance Observer-based control systems.

Findings

Summarizes 35 years of research on Disturbance Observer-based control.

Unifies analysis and synthesis techniques for linear and nonlinear systems.

Discusses engineering applications and future prospects.

Abstract

Disturbance Observer has been one of the most widely used robust control tools since it was proposed in 1983. This paper introduces the origins of Disturbance Observer and presents a survey of the major results on Disturbance Observer-based robust control in the last thirty-five years. Furthermore, it explains the analysis and synthesis techniques of Disturbance Observer-based robust control for linear and nonlinear systems by using a unified framework. In the last section, this paper presents concluding remarks on Disturbance Observer-based robust control and its engineering applications.