科技导报

基于多信号模型的引信测试性建模

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科技导报 | 研究论文 2010,28(1002): 67-70

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科技导报 |研究论文 2010 , 28 (1002) : 67 -70

基于多信号模型的引信测试性建模

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任月清,徐立新

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任月清

Testability Model of Fuze Based on Multi-signal Model

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出版时间: 2010-01-28

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针对目前武器系统测试性设计技术滞后于装备研制水平的问题，提出采用多信号模型法评估系统测试性。多信号模型法基于一种分层建模的思想，在系统结构的基础上以分层有向图表示信号流向和各组成单元的连接关系，通过定义功能、故障模式、测试与信号之间的关联性来表征系统的一种模型表示方法。文中建立了引信系统的多信号模型，针对引信作用失效故障模式，对系统测试性进行了评估并给出了量化结果，如故障检测率、故障隔离率、故障隔离模糊群组、未被检测的故障、未被使用的测试等。仿真结果表明，该方法能够快速、准确地实现故障检测与隔离，具有建模简单、模型失真度小、通用性强等特点，对提高产品可靠性，降低全寿命周期费用具有重要意义。

关键词

引信 / 测试性 / 多信号模型 / 故障检测率 / 故障隔离率

Abstract

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The modern weapon systems become more and more complex with the performance improvement. High integration and miniaturization have increased the risk of the potential fault, while the number of possible test points is reduced, which reduces the capability of test and diagnosis and affects the system security. Therefore, testability modeling and analysis technology are more and more emphasized by product designers. A system with adequate testability can diagnose and isolate faults promptly, rapidly, and accurately, with improved reliability and safety for specific tasks. In order to apply the testability technology to the development of weapons, an approach is proposed in this paper to analyze and evaluate the system testability based on the multi-signal model, as a hierarchical model. On the basis of the system structure, a hierarchical directed graph is used to indicate the direction of signals, the component of individual unit and the mutual relationship. The characteristics of the system can be represented by defining its function, the pattern of fault, and by testing the relationship between signals. Muti-signal modeling does not need detailed information about the failure mode, so it can be used to diagnose and isolate unexpected failure mode. It does not need detailed information about the design of the system, so it can be used to model even a conceptional product. In this paper, a multi-signal flow graph model of fuze is set up and the system testability is evaluated quantitatively and some effective strategies for diagnosis are proposed, by use of the fault detection rate, fault isolation rate, fault isolation of ambiguity group, unidentified fault and unused test. Meanwhile, testability suggestions such as the location of the test point, the location of isolation point to eliminate the feedback loop can be tagged directly in the functional module. It also provides accurate graph or text format testability reports. Simulation results indicate that a fast and accurate fault detection and isolation can be achieved by using this method, with the following features: easy modeling, low distortion and high generality. Its application can improve reliability and save maintenance cost of products.

Key words

fuze / testability / multi-signal flow graphs / fault detection rate / fault isolation rate

引用本文

任月清;徐立新. 基于多信号模型的引信测试性建模. 科技导报, 2010 , 28 (1002) : 67 -70 .

. Testability Model of Fuze Based on Multi-signal Model[J]. Science & Technology Review, 2010 , 28 (1002) : 67 -70 .

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2010年第28卷第1002期

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接收时间：2009-11-25
首发时间：2010-01-28
出版时间：2010-01-28

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收稿日期：2009-11-25
修回日期：2009-12-29

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任月清

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https://castjournals.cast.org.cn/joweb/kjdb/CN/1242119475982569627

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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