Redundant ADS and INS High Sensitivity Fault Detection Method
The fault detection function of GLT method is approximately proportional to the square of fault value, the value of the fault detection function is lower than the detection threshold when the soft fault is small, which leads to the low sensitivity of soft fault detection and the high rate of missing...
| Format: | Article |
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| Language: | zho |
| Published: |
EDP Sciences
2020-10-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p971/jnwpu2020385p971.html |
| _version_ | 1797426782893244416 |
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| collection | DOAJ |
| description | The fault detection function of GLT method is approximately proportional to the square of fault value, the value of the fault detection function is lower than the detection threshold when the soft fault is small, which leads to the low sensitivity of soft fault detection and the high rate of missing detection. The IM-SPRT method rapidly increases the value of fault detection function above the threshold of fault detection by accumulating small soft fault values, so it has high sensitivity for soft fault detection, however, the end time of the fault cannot be judged timely, resulting in a high false alarm for fault detection. In view of the above problems, this paper proposes a high-sensitivity fault detection method for redundant systems based on GLT/IM-SPRT. This method uses the IM-SPRT method to detect weak and soft faults and sets the IM-SPRT method fault detection function value to zero by the GLT fault detection result, and isolates the fault with GLT. On this basis, a framework of high-sensitivity fault detection and isolation methods for redundant ADS and INS systems is designed. The simulation results of soft and hard fault detection and isolation of three-redundancy ADS subsystem level and INS sensor level show that the method in this paper can improve the sensitivity of fault detection and reduce the rate of missed detection. |
| first_indexed | 2024-03-09T08:35:52Z |
| format | Article |
| id | doaj.art-5b352abc865f47b6ae365f1b963ffa62 |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-09T08:35:52Z |
| publishDate | 2020-10-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-5b352abc865f47b6ae365f1b963ffa622023-12-02T18:21:42ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252020-10-0138597197610.1051/jnwpu/20203850971jnwpu2020385p971Redundant ADS and INS High Sensitivity Fault Detection Method012School of Automation, Northwestern Polytechnical UniversitySchool of Automation, Northwestern Polytechnical UniversitySchool of Automation, Northwestern Polytechnical UniversityThe fault detection function of GLT method is approximately proportional to the square of fault value, the value of the fault detection function is lower than the detection threshold when the soft fault is small, which leads to the low sensitivity of soft fault detection and the high rate of missing detection. The IM-SPRT method rapidly increases the value of fault detection function above the threshold of fault detection by accumulating small soft fault values, so it has high sensitivity for soft fault detection, however, the end time of the fault cannot be judged timely, resulting in a high false alarm for fault detection. In view of the above problems, this paper proposes a high-sensitivity fault detection method for redundant systems based on GLT/IM-SPRT. This method uses the IM-SPRT method to detect weak and soft faults and sets the IM-SPRT method fault detection function value to zero by the GLT fault detection result, and isolates the fault with GLT. On this basis, a framework of high-sensitivity fault detection and isolation methods for redundant ADS and INS systems is designed. The simulation results of soft and hard fault detection and isolation of three-redundancy ADS subsystem level and INS sensor level show that the method in this paper can improve the sensitivity of fault detection and reduce the rate of missed detection.https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p971/jnwpu2020385p971.htmlredundant ads and insglt methodim-sprt methodsoft faultsimulationfault detection |
| spellingShingle | Redundant ADS and INS High Sensitivity Fault Detection Method Xibei Gongye Daxue Xuebao redundant ads and ins glt method im-sprt method soft fault simulation fault detection |
| title | Redundant ADS and INS High Sensitivity Fault Detection Method |
| title_full | Redundant ADS and INS High Sensitivity Fault Detection Method |
| title_fullStr | Redundant ADS and INS High Sensitivity Fault Detection Method |
| title_full_unstemmed | Redundant ADS and INS High Sensitivity Fault Detection Method |
| title_short | Redundant ADS and INS High Sensitivity Fault Detection Method |
| title_sort | redundant ads and ins high sensitivity fault detection method |
| topic | redundant ads and ins glt method im-sprt method soft fault simulation fault detection |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p971/jnwpu2020385p971.html |