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ISPRS Int. J. Geo-Inf. 2018, 7(1), 4; https://doi.org/10.3390/ijgi7010004

Study of a Gray Genetic BP Neural Network Model in Fault Monitoring and a Diagnosis System for Dam Safety

1
College of Geomatics and Geoinformation, Guilin University of Technology, Guilin 541004, China
2
Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin 541004, China
*
Author to whom correspondence should be addressed.
Received: 14 November 2017 / Revised: 20 December 2017 / Accepted: 22 December 2017 / Published: 27 December 2017
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Abstract

In this paper, a self-diagnosis system of observer fault with linear and non-linear combination is studied in light of the unstable performance of the automatic monitoring system and the drift of the measured value. The system makes a prediction step ahead of time, compares it with the online measured value, and makes a logical judgment based on the residual error to achieve the purpose of real-time diagnosis of the automatic monitoring system. We developed a novel combined algorithm for dam deformation prediction using two traditional models and one optimization model. The developed algorithm combines two sub-algorithms: the gray model (GM) (1, 1) and the back-propagation neural network (BPNN) model. The GM (1, 1) addresses the effects of the automated monitoring of data from unstable situations; the BPNN model addresses the internal non-linear regularity of the dam displacement. The connection weights and thresholds of the BPNN model can be optimized and determined via the genetic algorithm (GA), which can decrease the uncertainties within the model predictions and improve the prediction accuracy. The results show that the fault self-diagnosis system based on the GM-GA-BP combined model can realize online fault diagnosis better than the traditional single models. View Full-Text
Keywords: fault diagnosis system; measured value drift; gray genetic BP neural network model; dam deformation and prediction fault diagnosis system; measured value drift; gray genetic BP neural network model; dam deformation and prediction
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Liu, H.-F.; Ren, C.; Zheng, Z.-T.; Liang, Y.-J.; Lu, X.-J. Study of a Gray Genetic BP Neural Network Model in Fault Monitoring and a Diagnosis System for Dam Safety. ISPRS Int. J. Geo-Inf. 2018, 7, 4.

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