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Sensors 2017, 17(4), 700; doi:10.3390/s17040700

Sensor Fault and Delay Tolerant Control for Networked Control Systems Subject to External Disturbances

1
Shandong Provincial Key Laboratory of Network Based Intelligent Computing, University of Jinan, Jinan 250022 , China
2
College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China
*
Author to whom correspondence should be addressed.
Received: 8 January 2017 / Revised: 15 March 2017 / Accepted: 23 March 2017 / Published: 28 March 2017
(This article belongs to the Section Physical Sensors)
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Abstract

In this paper, the problem of sensor fault and delay tolerant control problem for a class of networked control systems under external disturbances is investigated. More precisely, the dynamic characteristics of the external disturbance and sensor fault are described as the output of exogenous systems first. The original sensor fault and delay tolerant control problem is reformulated as an equivalence problem with designed available system output and reformed performance index. The feedforward and feedback sensor fault tolerant controller (FFSFTC) can be obtained by utilizing the solutions of Riccati matrix equation and Stein matrix equation. Based on the designed fault diagnoser, the proposed FFSFTC is further reconstructed to compensate for the sensor fault and delayed measurement effects. Finally, numerical examples are provided to illustrate the effectiveness of our proposed FFSFTC with different cases with various types of sensor faults, measurement delays and external disturbances. View Full-Text
Keywords: fault tolerance control; disturbance rejection; sensor fault; delayed measurement; external disturbances fault tolerance control; disturbance rejection; sensor fault; delayed measurement; external disturbances
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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. (CC BY 4.0).

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Han, S.-Y.; Chen, Y.-H.; Tang, G.-Y. Sensor Fault and Delay Tolerant Control for Networked Control Systems Subject to External Disturbances. Sensors 2017, 17, 700.

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