[1]XIA Fei,MA Xi,ZHANG Hao,et al.Application of improved D-S evidence theory in fault diagnosis of lithium batteries in electric vehicles[J].CAAI Transactions on Intelligent Systems,2017,12(4):526-537.[doi:10.11992/tis.201605001]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
12
Number of periods:
2017 4
Page number:
526-537
Column:
学术论文—智能系统
Public date:
2017-08-25
- Title:
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Application of improved D-S evidence theory in fault diagnosis of lithium batteries in electric vehicles
- Author(s):
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XIA Fei1; 2; 3; MA Xi1; 2; ZHANG Hao1; 2; 3; PENG Daogang1; 2; SUN Peng1; 2; LUO Zhijiang1; 2
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1. College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China;
2. Shanghai Engineering Research Center of Intelligent Management and Control for Power Process, Shanghai 200090, China;
3. College of Electronics a
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- Keywords:
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fault diagnosis; electric vehicle; lithium battery; improved evidence theory; information fusion
- CLC:
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TP301
- DOI:
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10.11992/tis.201605001
- Abstract:
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In this study,we used the improved Dempster-Shafer (D-S) evidence theory combination rules based on the neural network to construct a fault diagnosis process for an electric vehicle battery system.To avoid misdiagnoses and missed diagnoses caused by a single fault diagnosis method,we applied the D-S evidence theory combination principle to determine the result based on the back-propagation (BP) network and radial basis function (RBF) network fault diagnosis algorithm.However,to overcome the defects in the D-S evidence theory in dealing with highly conflicting evidence,we propose a D-S evidence theory combination principle based on an improved neural network.First,we apply a neural network to perform a preliminary diagnosis regarding battery failure and the accuracy of the network diagnosis.Then,we distribute indefinite information and construct a body of evidence.We also introduce a support matrix of this evidence to determine a new weighted body of evidence.We then integrate the credibility of every focal element into the D-S evidence theory combination rules to fuse the neural network body of evidence with the new weighted body of evidence.Lastly,based on the decision criterion,we determine the failure state of the lithium battery system.Our simulation results show that our proposed improved D-S evidence theory fusion diagnosis method is effective in the fault diagnosis of electric vehicles with lithium batteries.