Brief paper: Fault-tolerant control for a class of nonlinear sampled-data systems via a Euler approximate observer

Authors:
Zehui Mao;Bin Jiang;Peng Shi
Affiliations:
College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China;College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China;Department of Computing and Mathematical Sciences, University of Glamorgan, Pontypridd, CF37 1DL, UK and School of Engineering and Science, Victoria University, Melbourne 8001, Australia and Schoo ...
Venue:
Automatica (Journal of IFAC)
Year:
2010

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Abstract

In this paper, a fault-tolerant control (FTC) scheme is developed for a class of nonlinear sampled-data systems. First, a Euler approximate discrete model is used to describe the plant under the sampling. Under this model, an observer-based fault estimation method is proposed. To guarantee the accuracy of both the state and fault estimation values, the conditions to make the approximate model consistent with the exact model are presented. Then, an active fault-tolerant controller, which has a constraint condition for the sampling time, is designed to make the faulty system stable. Finally, an inverted pendulum is used to show the efficiency of the proposed method.