Disturbance rejection using SMC-based-equivalent-input-disturbance approach

Xiang Yin, Jinhua She, Min Wu, Daiki Sato and Kouhei Ohnishi

Applied Mathematics and Computation, 2022, vol. 418, issue C

Abstract: This paper uses the sliding-mode control (SMC) to compensate for an estimation error caused by the filter in an equivalent-input-disturbance (EID) compensator. The application of the SMC brings another shortcoming: The chattering problem. To solve such a problem, this paper makes use the features of the EID approach and presents a method of designing a small switching gain based on the estimation error. Combining the SMC, the EID approach, and the switching-gain design law, this paper presents a new system configuration. The presented SMC-based-EID control system not only improves the disturbance-suppression performance of the EID approach but also solves the chattering problem in the SMC. A comparison shows the validity and superiority of our method. Furthermore, the robustness of the disturbance-rejection performance with respect to measurement noise is also shown by the example.

Keywords: Chattering free; Disturbance rejection; Equivalent input disturbance; Nonlinear system; Sliding-mode control (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:418:y:2022:i:c:s009630032100922x

DOI: 10.1016/j.amc.2021.126839

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