Disturbance observer–based finite-time control for a class of systems with multiple heterogeneous disturbances

• Published in: Transactions of the Institute of Measurement and Control Vol. 45; no. 1; pp. 27 - 36
• Main Authors: Zhang, Huifeng, Wei, Xinjiang, Zhao, Hanxu, Hu, Xin
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01-01-2023; Sage Publications Ltd
• Subjects: Control methods; Control systems; Disturbance observers; Induction generators; globally finite-time stable; finite-time control; implicit Lyapunov function; Disturbance observer–based control
• ISSN: 0142-3312; 1477-0369
• DOI: 10.1177/01423312221105971

The finite-time anti-disturbance control problem is studied for systems with multiple heterogeneous disturbances, which include the disturbance with partially known information and the external disturbance. A disturbance observer is designed to online estimate the disturbance with partially known information. Based on this, a disturbance observer–based finite-time control (DOBFTC) scheme is presented by combining disturbance observer–based control (DOBC) with finite-time control method to guarantee that the composite system is globally finite-time stable. Two simulation examples including a numerical example and a doubly fed induction generators (DFIG) system are given to show the effectiveness of the proposed method compared with the existing schemes.