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Disturbance Observer Based Output Feedback Controller Design for Systems with Mismatched Disturbance

  • Jeang-Lin Chang
  • Tsui-Chou Wu
Regular Papers Control Theory and Applications
  • 67 Downloads

Abstract

For linear MIMO systems with mismatched unknown perturbations, this paper proposes a dynamic output feedback controller that uses a disturbance estimation algorithm. The proposed observer algorithm, which simultaneously estimates the system sates and the effect of an input disturbance, is successfully implemented in non-minimum phase systems. The developed control law, which uses estimation information into the controller design, can guarantee robust stabilization of the closed-loop system and sustain disturbance attenuation when the solutions to two algebraic Riccati inequalities are determined. Finally, the feasibility of the proposed method is illustrated using a numerical example.

Keywords

Disturbance observer dynamic output feedback mismatched disturbance non-minimum phase 

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Copyright information

© Institute of Control, Robotics and Systems and The Korean Institute of Electrical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Electrical EngineeringOriental Institute of TechnologyNew Taipei CityTaiwan

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