Active Fault Isolation for Multimode Fault Systems Based on a Set Separation Indicator
This paper considers the active fault isolation problem for a class of uncertain multimode fault systems with a high-dimensional state-space model. It has been observed that the existing approaches in the literature based on a steady-state active fault isolation method are often accompanied by a lar...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/25/6/876 |
| _version_ | 1797594930372149248 |
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| author | Kezhen Han Shaohang Lu Zhengce Liu Zipeng Wang |
| author_facet | Kezhen Han Shaohang Lu Zhengce Liu Zipeng Wang |
| author_sort | Kezhen Han |
| collection | DOAJ |
| description | This paper considers the active fault isolation problem for a class of uncertain multimode fault systems with a high-dimensional state-space model. It has been observed that the existing approaches in the literature based on a steady-state active fault isolation method are often accompanied by a large delay in making the correct isolation decision. To reduce such fault isolation latency significantly, this paper proposes a fast online active fault isolation method based on the construction of residual transient-state reachable set and transient-state separating hyperplane. The novelty and benefit of this strategy lies in the embedding of a new component called the set separation indicator, which is designed offline to distinguish the residual transient-state reachable sets of different system configurations at any given moment. Based on the results delivered by the set separation indicator, one can determine the specific moments at which the deterministic isolation is to be implemented during online diagnostics. Meanwhile, some alternative constant inputs can also be evaluated for isolation effects to determine better auxiliary excitation signals with smaller amplitudes and more differentiated separating hyperplanes. The validity of these results is verified by both a numerical comparison and an FPGA-in-loop experiment. |
| first_indexed | 2024-03-11T02:29:40Z |
| format | Article |
| id | doaj.art-5ae10be444464ce09aa1577cff8eba4c |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-11T02:29:40Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-5ae10be444464ce09aa1577cff8eba4c2023-11-18T10:17:40ZengMDPI AGEntropy1099-43002023-05-0125687610.3390/e25060876Active Fault Isolation for Multimode Fault Systems Based on a Set Separation IndicatorKezhen Han0Shaohang Lu1Zhengce Liu2Zipeng Wang3School of Electrical Engineering, University of Jinan, Jinan 250022, ChinaSchool of Electrical Engineering, University of Jinan, Jinan 250022, ChinaSchool of Electrical Engineering, University of Jinan, Jinan 250022, ChinaInstitute of Artificial Intelligence, Faculty of Information Technology, Beijing University of Technology, Beijing 100124, ChinaThis paper considers the active fault isolation problem for a class of uncertain multimode fault systems with a high-dimensional state-space model. It has been observed that the existing approaches in the literature based on a steady-state active fault isolation method are often accompanied by a large delay in making the correct isolation decision. To reduce such fault isolation latency significantly, this paper proposes a fast online active fault isolation method based on the construction of residual transient-state reachable set and transient-state separating hyperplane. The novelty and benefit of this strategy lies in the embedding of a new component called the set separation indicator, which is designed offline to distinguish the residual transient-state reachable sets of different system configurations at any given moment. Based on the results delivered by the set separation indicator, one can determine the specific moments at which the deterministic isolation is to be implemented during online diagnostics. Meanwhile, some alternative constant inputs can also be evaluated for isolation effects to determine better auxiliary excitation signals with smaller amplitudes and more differentiated separating hyperplanes. The validity of these results is verified by both a numerical comparison and an FPGA-in-loop experiment.https://www.mdpi.com/1099-4300/25/6/876active fault isolationconstant auxiliary inputset separation indicatorresidual reachable settransient-state separating hyperplane |
| spellingShingle | Kezhen Han Shaohang Lu Zhengce Liu Zipeng Wang Active Fault Isolation for Multimode Fault Systems Based on a Set Separation Indicator Entropy active fault isolation constant auxiliary input set separation indicator residual reachable set transient-state separating hyperplane |
| title | Active Fault Isolation for Multimode Fault Systems Based on a Set Separation Indicator |
| title_full | Active Fault Isolation for Multimode Fault Systems Based on a Set Separation Indicator |
| title_fullStr | Active Fault Isolation for Multimode Fault Systems Based on a Set Separation Indicator |
| title_full_unstemmed | Active Fault Isolation for Multimode Fault Systems Based on a Set Separation Indicator |
| title_short | Active Fault Isolation for Multimode Fault Systems Based on a Set Separation Indicator |
| title_sort | active fault isolation for multimode fault systems based on a set separation indicator |
| topic | active fault isolation constant auxiliary input set separation indicator residual reachable set transient-state separating hyperplane |
| url | https://www.mdpi.com/1099-4300/25/6/876 |
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