Integrated fault estimation and fault-tolerant control for stochastic systems with Brownian motions

Liu, Xiaoxu and Gao, Zhiwei (2018) Integrated fault estimation and fault-tolerant control for stochastic systems with Brownian motions. International Journal of Robust and Nonlinear Control, 28 (6). pp. 1915-1941. ISSN 1049-8923

[img] Text
IJRNC_final may 2018.pdf - Accepted Version
Restricted to Repository staff only until 27 November 2018.

Download (926kB) | Request a copy
Official URL: http://dx.doi.org/10.1002/rnc.3982

Abstract

This paper presents an integrated robust fault estimation and fault‐tolerant control technique for stochastic systems subjected to Brownian parameter perturbations. The augmented system approach, unknown input observer method, and optimization technique are integrated to achieve robust simultaneous estimates of the system states and the means of faults concerned. Meanwhile, a robust fault‐tolerant control strategy is developed by using actuator and sensor signal compensation techniques. Stochastic linear time‐invariant systems, stochastic systems with Lipschitz nonlinear constraint, and stochastic systems with quadratic inner‐bounded nonlinear constraint are respectively investigated, and the corresponding fault‐tolerant control algorithms are addressed. Finally, the effectiveness of the proposed fault‐tolerant control techniques is demonstrated via the drivetrain system of a 4.8 MW benchmark wind turbine, a 3‐tank system, and a numerical nonlinear model.

Item Type: Article
Uncontrolled Keywords: Brownian motions, fault estimation, fault‐tolerant control, stochastically input‐to‐state stability
Subjects: H100 General Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 17 May 2018 12:03
Last Modified: 18 Jun 2018 08:15
URI: http://nrl.northumbria.ac.uk/id/eprint/34258

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence