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Sensors 2011, 11(1), 557-572; doi:10.3390/s110100557
Article

Fault Isolation Filter for Networked Control System with Event-Triggered Sampling Scheme

1,* , 2 and 1
1 College of Automation Science and Engineering, South China University of Technology, Guangzhou 510641, China 2 Nancy University, CRAN-CNRS UMR 7039, BP239, 54506 Vandoeuvre Cedex, France
* Author to whom correspondence should be addressed.
Received: 18 November 2010 / Revised: 20 December 2010 / Accepted: 24 December 2010 / Published: 7 January 2011
(This article belongs to the Section Physical Sensors)
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Abstract

In this paper, the sensor data is transmitted only when the absolute value of difference between the current sensor value and the previously transmitted one is greater than the given threshold value. Based on this send-on-delta scheme which is one of the event-triggered sampling strategies, a modified fault isolation filter for a discrete-time networked control system with multiple faults is then implemented by a particular form of the Kalman filter. The proposed fault isolation filter improves the resource utilization with graceful fault estimation performance degradation. An illustrative example is given to show the efficiency of the proposed method.
Keywords: networked control system; fault isolation filter; event-triggered sampling; send-on-delta networked control system; fault isolation filter; event-triggered sampling; send-on-delta
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Li, S.; Sauter, D.; Xu, B. Fault Isolation Filter for Networked Control System with Event-Triggered Sampling Scheme. Sensors 2011, 11, 557-572.

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