| BIT分析的三态马尔可夫模型 |
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| 引用本文： | 柳新民,邱静,刘冠军.BIT分析的三态马尔可夫模型[J].系统工程与电子技术,2004,26(6):850-853. |
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| 作者姓名： | 柳新民 邱静 刘冠军 |
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| 作者单位： | 国防科技大学机电工程与自动化学院,湖南,长沙,410073 |
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| 摘 要： | BIT虚警率高阻碍了BIT效能的充分发挥和更广泛、更深入的应用,如何在故障检测率一定的条件下,降低虚警率将成为一个亟待解决的问题。通过将系统状态划分为正常、间歇和故障三种状态,建立了三态马尔可夫模型。分析了三态模型的合理性、与两态(正常状态、故障状态)模型的关系,并对两者进行了对比。理论分析表明,基于三态模型的BIT与基于两态模型的BIT系统相比,其能力与性能得到了提高,在提高故障检测率的同时,还可以降低虚警率。
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| 关 键 词： | 三态马尔可夫模型 间歇故障 虚警率 故障检测率 |
| 文章编号： | 1001-506X(2004)06-0850-04 |
| 修稿时间： | 2003年4月3日 |
Analysis of the 3-state Markov model in BIT |
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| LIU Xin-min,QIU Jing,LIU Guan-jun.Analysis of the 3-state Markov model in BIT[J].System Engineering and Electronics,2004,26(6):850-853. |
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| Authors: | LIU Xin-min QIU Jing LIU Guan-jun |
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| Abstract: | The application of BIT system was widely hindered by the high FAR. How to reduce FAR without reducing FDR is a difficult problem that needs to solve. In this paper, the states of a system are divided into 3 state that include OK state, intermittent state and faulty state. The 3-state Markov model is set up, the rationality of 3-state Markov model and the relation between 3-state model and 2-state model are analyzed. The analyzing results show that the BIT of 3-state model is found to be better than BIT of 2-state model in reducing FAR as well as increasing FDR. |
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| Keywords: | 3-state Markov model intermittent fault FAR FDR |
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