| 引用本文: | 周睿,乔纯捷,王跃科.水下监测系统的生存性定义与模型.[J].国防科技大学学报,2009,31(2):99-102.[点击复制] |
| ZHOU Rui,QIAO Chunjie,WANG Yueke.Survivability Definition and Model for Underwater Monitoring System[J].Journal of National University of Defense Technology,2009,31(2):99-102[点击复制] |
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| 水下监测系统的生存性定义与模型 |
| 周睿, 乔纯捷, 王跃科 |
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(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: |
| 当水下监测系统遇到外部攻击、发生故障和事故时，生存性为系统仍保证基本服务提供了保障。为准确衡量此类系统的生存性，提出了它的生存性定义、计算方法和系统模型。生存性定义为在指定工作环境下，受事件影响的系统服务仍能达到用户要求的能力，表示为系统服务性能的数学期望。根据这种定义和计算方法能更准确地判别系统设计是否满足生存性标准。在基于多状态系统的生存性模型中，服务性能是各子系统状态的函数，与系统的结构函数有关。子系统状态的概率分布由系统的可靠性和安全性决定。最后通过实例说明了生存性模型的有效性。 |
| 关键词: 海洋监测 生存性 服务性能 可靠性 安全性 |
| DOI： |
| 投稿日期：2008-06-18 |
| 基金项目:国家部委基金资助项目 |
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| Survivability Definition and Model for Underwater Monitoring System |
| ZHOU Rui, QIAO Chunjie, WANG Yueke |
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(College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Survivability helps ensure that underwater monitoring systems provide essential services under conditions of attacks, failures, and accidents. To evaluate the survivability of such systems accurately, definition of survivability and its model is proposed in this paper. Survivability, the ability of a system to meet user's requirement of service when the system is affected by some events in a specified environment, and is computed by mathematical expectation of services performance. This method will have more precise result than others in judging whether system design achieves the criteria of survivability. To the survivability model based on multi-state system, service performance is the function of state of all subsystems, which is related to structure function of system. Probability distribution of subsystem's states is decided by reliability and security. In the end, an illustrative example is presented to prove the effective of the survivability model is presented in the end. |
| Keywords: marine monitoring survivability service performance reliability security |
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