Please use this identifier to cite or link to this item:
Title: Neural network approach for sensor fault detection and accommodation
Authors: ZHENG JIE
Keywords: Neural network, Fault tolerant, Sensor, Dynamic system, Back propagation, Transport Delay
Issue Date: 28-Jun-2004
Citation: ZHENG JIE (2004-06-28). Neural network approach for sensor fault detection and accommodation. ScholarBank@NUS Repository.
Abstract: This thesis seeks to investigate if a neural network based fault detection and accommodation scheme is able to limit the influence of sensor faults on the performance of a nonlinear dynamic process. After a failure examination of MLP network based approach, an Elman network based fault detection and accommodation approach was proposed. Dynamic systems can be modelled using Elman network directly by employing the simplified Dynamic Backpropagation (DBP) algorithm proposed. The simulation result obtained from a SISO plant suggests that the Elman network based scheme is successful. Then, a modified Elman network with delay blocks and the corresponding algorithm to learn the delay is proposed to handle the system with dead-time. Finally, experiments on a nonlinear coupled tank system were implemented to demonstrate the effectiveness of the Elman network based fault accommodation scheme. Sensor fault tolerant experimental results demonstrate the feasibility and effectiveness of the proposed scheme.
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
report.pdf1.65 MBAdobe PDF



Page view(s)

checked on May 23, 2019


checked on May 23, 2019

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.