Work

Design of a novel state-feedback robust $$H_2/H_{\infty }$$ sliding-mode controller for a hydraulic turbine governing system

Year: 2024

Type: article

Abstract: This paper presents a novel state-feedback robust sliding-mode controller (SFRSMC) based on a mixed $$H_2/H_{\infty }$$ approach to enhance the control performance of hydraulic turbine governing systems (HTGS) with complex conduit systems under external load disturbances and control signal uncertainties. A state-space model incorporating the dynamic responses of the HTGS is developed. The SFRSMC is designed using the sliding-mode equivalent control principle, with a disturbance observer to estimate and mitigate unknown disturbances. To balance robustness and optimality, mixed $$H_2/H_{\infty }$$ linear matrix inequalities (LMIs) are utilized to determine the critical performance sliding matrix via an auxiliary feedback control method. The effectiveness of the proposed control scheme is validated through time-domain simulations under various operating scenarios, including different parameter variations of the HTGS.

Source: Scientific Reports

DOI: 10.1038/s41598-024-79493-x

Authors: Fang Dao, Yidong Zou, Jing Qian, Yun Zeng

Institutions: Kunming University of Science and Technology, Wuhan University

Language: English

Topic: Stability and Control of Uncertain Systems

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,590