دورية أكاديمية
Compound Fault Diagnosis and Sequential Prognosis for Electric Scooter with Uncertainties
| العنوان: | Compound Fault Diagnosis and Sequential Prognosis for Electric Scooter with Uncertainties |
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| المؤلفون: | Ming Yu, Haotian Lu, Hai Wang, Chenyu Xiao, Dun Lan |
| المصدر: | Actuators, Vol 9, Iss 4, p 128 (2020) |
| بيانات النشر: | MDPI AG, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials LCC:Production of electric energy or power. Powerplants. Central stations |
| مصطلحات موضوعية: | uncertain electric scooter, intermittent fault, non-monotonic degradation, adaptive enhanced unscented Kalman filter, sequential prognosis, Materials of engineering and construction. Mechanics of materials, TA401-492, Production of electric energy or power. Powerplants. Central stations, TK1001-1841 |
| الوصف: | This paper addresses diagnosis and prognosis problems for an electric scooter subjected to parameter uncertainties and compound faults (i.e., permanent fault and intermittent fault with non-monotonic degradation). First, the diagnostic bond graph in linear fractional transformation form is used to model the uncertain electric scooter and derive the analytical redundancy relations incorporating the nominal part and uncertain part, based on which the adaptive thresholds for robust fault detection and the fault signature matrix for fault isolation can be obtained. Second, an adaptive enhanced unscented Kalman filter is proposed to identify the fault magnitudes and distinguish the fault types where an auxiliary detector is introduced to capture the appearing and disappearing moments of intermittent fault. Third, a dynamic model with usage dependent degradation coefficient is developed to describe the degradation process of intermittent fault under various usage conditions. Due to the variation of degradation coefficient and the presence of non-monotonic degradation characteristic under some usage conditions, a sequential prognosis method is proposed where the reactivation of the prognoser is governed by the reactivation events. Finally, the proposed methods are validated by experiment results. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-0825 |
| Relation: | https://www.mdpi.com/2076-0825/9/4/128; https://doaj.org/toc/2076-0825 |
| DOI: | 10.3390/act9040128 |
| URL الوصول: | https://doaj.org/article/cac13395bea145d2bf8a4f1b357ec244 |
| رقم الأكسشن: | edsdoj.13395bea145d2bf8a4f1b357ec244 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20760825 |
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| DOI: | 10.3390/act9040128 |