International Journal of Control, Automation and Systems 2020; 18(7): 1662-1670
Published online January 22, 2020
https://doi.org/10.1007/s12555-019-0045-1
© The International Journal of Control, Automation, and Systems
In the paper, a generalized H∞ framework for design of a disturbance observer (DOB) is newly presented for a class of linear time-invariant single-input/single-output systems. Motivated by the systematic synthesis of a stabilizing controller through the H∞ optimization, we formulate the DOB design method into an H∞ design problem with weighting functions in the frequency domain. Thanks to its generality, the proposed method can be consistently applied either to the unstable systems or the non-minimum phase systems. Through the examples, the efficacy of the method is validated.
Keywords Disturbance observer, H∞ optimization problem, linear fractional transformation, stabilizing scaling
International Journal of Control, Automation and Systems 2020; 18(7): 1662-1670
Published online July 1, 2020 https://doi.org/10.1007/s12555-019-0045-1
Copyright © The International Journal of Control, Automation, and Systems.
Hyung-Tae Seo, Soohyun Kim, and Kyung-Soo Kim*
KAIST
In the paper, a generalized H∞ framework for design of a disturbance observer (DOB) is newly presented for a class of linear time-invariant single-input/single-output systems. Motivated by the systematic synthesis of a stabilizing controller through the H∞ optimization, we formulate the DOB design method into an H∞ design problem with weighting functions in the frequency domain. Thanks to its generality, the proposed method can be consistently applied either to the unstable systems or the non-minimum phase systems. Through the examples, the efficacy of the method is validated.
Keywords: Disturbance observer, H∞ optimization problem, linear fractional transformation, stabilizing scaling
Vol. 23, No. 2, pp. 359~682
Hamin Chang, Donghyeon Song, Chanhwa Lee*, and Hyungbo Shim
International Journal of Control, Automation, and Systems 2024; 22(12): 3584-3594Taegyun Kim, Hoijo Jeong, and Seungkeun Kim*
International Journal of Control, Automation, and Systems 2024; 22(12): 3570-3583Shuangyi Hu, Xuemei Ren*, and Dongdong Zheng
International Journal of Control, Automation, and Systems 2024; 22(1): 72-83