Design and Analysis of Built-in Test for Torpedo Homing System
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摘要: 机内测试(BIT)是一种仅依靠自身内部硬件及软件实现系统测试的技术,鱼雷自导系统机内测试技术是改善鱼雷测试性、维修性和故障诊断能力的重要途径。该文介绍了一种用于鱼雷自导系统采用集中式BIT结构和板内ROM式BIT的软硬件设计的BIT技术,定性分析了其主要功能、结构划分和设计依据,给出了检测流程图,并指出了多条有效降低BIT结构虚警的途径。根据文章给出的测试性预计方法,对该系统的分析预计可知,该自导系统BIT具有较高的故障检测率,符合设计要求。
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关键词:
- 鱼雷自导系统 /
- 测试性 /
- 机内测试(BIT) /
- 故障检测率(FDR) /
- 故障隔离率(FIR) /
- 虚警率(FAR)
Abstract: Built-in test(BIT) of torpedo homing system is an important technique for improving testability,maintainability and fault diagnosis capability of torpedo homing system. We introduce a BIT technique for torpedo homing system by using a centralized BIT structure and in-board ROM-BIT hardware and software design method,analyze qualitatively the main function,structure division and design basis,give the flow chart of detection,and present several ways to reduce effectively false alarm rate(FAR) of the BIT.Analysis and calculation results show that the BIT technique meets design requirements with higher falult detection rate(FDR). -
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