Working condition diagnosis of oil pump machine based on
continuous process neural network and extreme learning machine

Computer Engineering & Science

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Working condition diagnosis of oil pump machine based on

continuous process neural network and extreme learning machine

LIU Zhi-gang1,XU Shao-hua2，LI Pan-chi1

（1.School of Computer and Information Technology，Northeast Petroleum University，Daqing 163318;

2.College of Information Science and Engineering,Shandong University of Science and Technology,Qingdao

266590,China）

Received:2015-12-28 Revised:2016-03-17 Online:2017-10-25 Published:2017-10-25

Abstract

Abstract:

To tackle the shortcoming of common neural networks of low diagnostic accuracy in the working condition

diagnosis of the oil pump machine, we propose a method that selects continuous process neural networks as the

diagnostic model. Because the geometric shape characteristics of the indicator diagram are directly reflected

by the continuous signals of move and load, we select them as the feature input of the diagnostic model. In

order to increase the learning speed, we introduce an extreme learning algorithm to process neural networks.

The model training process is converted to a least square problem. The output matrix of the hidden layer is

calculated according to the samples, the Moore-Penrose generalized inverse is solved by the SVD algorithm and

then the output weights of the hidden layer are calculated. Diagnostic experiments show that the learning

speed is increased by about 5 times, the diagnostic accuracy is improved by about 8 percentage in comparison

with common neural networks, and the validity of the method is verified.

Key words: working condition diagnosis, process neural network, extreme learning, moore-Penrose generalized inverse, network

training

LIU Zhi-gang1,XU Shao-hua2，LI Pan-chi1.

Working condition diagnosis of oil pump machine based on

continuous process neural network and extreme learning machine

[J]. Computer Engineering & Science.

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Working condition diagnosis of oil pump machine based on

continuous process neural network and extreme learning machine

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