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Online extreme learning machine based modeling and optimization for point-by-point engine calibration
Wong, Pak Kin1; Gao, Xiang Hui1; Wong, Ka In1; Vong, Chi Man2
2018-02-14
Source PublicationNEUROCOMPUTING
ISSN0925-2312
Volume277Pages:187-197
Abstract

An online extreme learning machine (ELM) based modeling and optimization approach for point-bypoint engine calibration is proposed to improve the efficiency of conventional model-based calibration approach. Instead of building hundreds of local engine models for every engine operating point, only one ELM model is necessary for the whole process. This ELM model is firstly constructed for a starting operating point, and calibration of this starting point is conducted by determining the optimal parameters of the model. This ELM model is then re-used as a base model for a nearby target operating point, and optimization is performed on the model to search for its best parameters. With a design of experiment strategy on the best parameters obtained, new measurements from the target operating point can be collected and used to update the model. By repeating the optimization and model update procedures, the optimal parameters for the target point can be found after several iterations. By using the model of this target point as the base model for another nearby operating point and repeating the same process again, calibration for all the operating points can be done online efficiently. The contribution of the proposed method is to save the number of experiments in the calibration process. To verify the effectiveness of the proposed approach, experiments on a commercial engine simulation software have been conducted. Three variants of online ELM are utilized in the model update process for comparison. The results show that engine calibration can be carried out with much fewer measurements and time using the proposed approach, and the initial training free online ELM is the most efficient online modeling method for this application. (C) 2017 Elsevier B.V. All rights reserved.

KeywordEngine Calibration Engine Modeling Engine Optimization Initial-training-free Online Extreme Learning Machine
DOI10.1016/j.neucom.2017.02.104
URLView the original
Indexed BySCI
Language英语
WOS Research AreaComputer Science
WOS SubjectComputer Science, Artificial Intelligence
WOS IDWOS:000419222300019
PublisherELSEVIER SCIENCE BV
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF COMPUTER AND INFORMATION SCIENCE
DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Affiliation1.Department of Electromechanical Engineering, University of Macau, Macau
2.Department of Computer and Information Science, University of Macau, Macau
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Wong, Pak Kin,Gao, Xiang Hui,Wong, Ka In,et al. Online extreme learning machine based modeling and optimization for point-by-point engine calibration[J]. NEUROCOMPUTING,2018,277:187-197.
APA Wong, Pak Kin,Gao, Xiang Hui,Wong, Ka In,&Vong, Chi Man.(2018).Online extreme learning machine based modeling and optimization for point-by-point engine calibration.NEUROCOMPUTING,277,187-197.
MLA Wong, Pak Kin,et al."Online extreme learning machine based modeling and optimization for point-by-point engine calibration".NEUROCOMPUTING 277(2018):187-197.
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