An Improved Equivalent-Input-Disturbance Approach for Repetitive Control System With State Delay and Disturbance

Pan Yu, Min Wu, Jinhua She, Kang Zhi Liu, Yosuke Nakanishi

研究成果: Article査読

43 被引用数 (Scopus)

抄録

An improved equivalent-input-disturbance (EID) approach is devised to enhance the disturbance-rejection performance for a strictly proper plant with a state delay in a modified repetitive-control system. A gain factor is introduced to construct an improved EID estimator. This increases the flexibility of system design and enables the adjustment of the dynamical performance of disturbance rejection. Moreover, the commutative condition, which is widely used for the conventional EID estimator, is avoided. Thus, it reduces the conservativeness of design by removing the constraints imposed by the commutative condition. The system is divided into two subsystems, and the separation theorem is applied to simplify the design. For one subsystem, the delay information on both the modified repetitive controller and the plant is used to reduce the conservativeness of stability condition. The resulting linear matrix inequality (LMI) is used to find the gain of the state-feedback controller. Another LMI is derived to design the gains of the state observer and the improved EID estimator for the other subsystem. A case study on a metal-cutting system validates the superiority of the developed method.

本文言語English
論文番号7951036
ページ(範囲)521-531
ページ数11
ジャーナルIEEE Transactions on Industrial Electronics
65
1
DOI
出版ステータスPublished - 2018 1

ASJC Scopus subject areas

  • 制御およびシステム工学
  • 電子工学および電気工学

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