Integrated fault estimation and fault-tolerant control for uncertain Lipschitz nonlinear systems

Lan, Jianglin; Patton, Ron J.

Abstract

This paper proposes an integrated fault estimation and fault-tolerant control (FTC) design for Lipschitz non-linear systems subject to uncertainty, disturbance, and actuator/sensor faults. A non-linear unknown input observer without rank requirement is developed to estimate the system state and fault simultaneously, and based on these estimates an adaptive sliding mode FTC system is constructed. The observer and controller gains are obtained together via H∞ optimization with a single-step linear matrix inequality (LMI) formulation so as to achieve overall optimal FTC system design. A single-link manipulator example is given to illustrate the effectiveness of the proposed approach.

Citation

Lan, J., & Patton, R. J. (2017). Integrated fault estimation and fault-tolerant control for uncertain Lipschitz nonlinear systems. International journal of robust and nonlinear control, 27(5), 761-780. https://doi.org/10.1002/rnc.3597

• Journal Article Type: Article
• Acceptance Date: Jun 15, 2016
• Online Publication Date: Jul 14, 2016
• Publication Date: Mar 25, 2017
• Deposit Date: Sep 16, 2016
• Publicly Available Date: Sep 16, 2016
• Journal: International journal of robust and nonlinear control
• Print ISSN: 1049-8923
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 27
• Issue: 5
• Pages: 761-780
• DOI: https://doi.org/10.1002/rnc.3597
• Keywords: Integrated design; Adaptive sliding mode fault-tolerant control; Non-linear unknown input observer; H∞ optimization; Lipschitz non-linear systems
• Public URL: https://hull-repository.worktribe.com/output/443179
• Publisher URL: http://onlinelibrary.wiley.com/doi/10.1002/rnc.3597/abstract
• Additional Information: Authors' accepted manuscript of article published in: International journal of robust and nonlinear control, 2016, v.27, issue 5
• Contract Date: Sep 16, 2016