Fault-Tolerant Damage Control of Nonlinear Structures Using Artificial Intelligence

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Baghban A.; Karamodin A.; Haji Kazemi H.

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Journal Paper

Paper Information

Journal: Civil Engineering Infrastructures Journal Year:2020 | Volume:53 | Issue:2 Page(s): 395-406

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Information Journal Paper

Title

Fault-Tolerant Damage Control of Nonlinear Structures Using Artificial Intelligence

Author(s)

Baghban A. | Karamodin A. | Haji Kazemi H. | Issue Writer Certificate

Keywords

Fault Diagnosis

Fault-Tolerant Control

Fuzzy Logic Controller (FLC)

Neural Networks

Probability of Damage

Abstract

In this paper, the artificial intelligence is employed to design a Fault-Tolerant Controller (FTC) for structural vibrations. The FTC is designed to reduce the Probability of Damage considering sensor fault. For this purpose, Neural Networks (NNs) are used as fault detection and accommodation and fuzzy logic is used as a controller. This control strategy requires two groups of Neural Networks. The first group of Neural Networks finds the faulty sensor by estimating the structural responses and comparing them with the responses obtained from the sensors. The second group has the task of estimating the response of the faulty sensor using data obtained from healthy sensors. To evaluate this method, the time history analysis of a 3-story benchmark building equipped with accelerometers and active actuators has been used. This evaluation is based on determining the probability of structural damage and the generation of fragility curves under forty ground motions. To develop fragility curves, the criteria specified in the FIMA 356 (IO, LS and CP) for the moment frame based on the inter-story drift are used. This study show that in the absence of the Neural Networks, sensor fault reduces the performance of the fuzzy controller and it is even possible to increase the structural responses compared to the structure without the controller. In addition, results demonstrate that the proposed control strategy can rectify the deterioration of sensor faults and decrease the probability of failure.

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