• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Reliability >Safety Comparison of Centralized and Distributed Aircraft Separation Assurance Concepts
【24h】

Safety Comparison of Centralized and Distributed Aircraft Separation Assurance Concepts

机译：集中式和分布式飞机分离保障概念的安全性比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents several models to compare centralized and distributed automated separation assurance concepts in aviation. In a centralized system, safety-related functions are implemented by common equipment on the ground. In a distributed system, safety-related functions are implemented by equipment on each aircraft. Failures of the safety-related functions can increase the risk of near mid-air collisions. Intuitively, failures on the ground are worse than failures in the air because the ground failures simultaneously affect multiple aircraft. This paper evaluates the degree to which this belief is true. Using region-wide models to account for dependencies between aircraft pairs, we derive the region-wide expectation and variance of the number of separation losses for both centralized and distributed concepts. This derivation is done first for a basic scenario involving a single component and function. We show that the variance of the number of separation losses is always higher for the centralized system, holding the expectations equal. However, numerical examples show that the difference is negligible when the events of interest are rare. Results are extended to a hybrid centralized-distributed scenario involving multiple components and functions on the ground and in the air. In this case, the variance of the centralized system may actually be less than that of the distributed system. The overall implication is that the common-cause failure of the ground function does not seriously weaken the overall case for using a centralized concept versus a distributed concept.
机译：本文提出了几种模型来比较航空中的集中式和分布式自动隔离保证概念。在集中式系统中，与安全相关的功能由地面上的通用设备实现。在分布式系统中，与安全相关的功能由每架飞机上的设备实现。安全相关功能的失败会增加近空中碰撞的风险。直觉上，地面故障比空中故障更为严重，因为地面故障同时会影响多架飞机。本文评估了这种信念的真实程度。使用区域范围的模型来说明飞机对之间的依赖性，我们得出集中式和分布式概念的区域范围期望值和分离损失数量的方差。首先针对涉及单个组件和功能的基本方案完成此推导。我们表明，对于集中式系统，分离损失数量的方差始终较高，并且期望值相等。但是，数值示例表明，当感兴趣的事件很少发生时，差异可以忽略不计。结果扩展到混合集中式分布式方案，其中涉及地面和空中的多个组件和功能。在这种情况下，集中式系统的方差实际上可能小于分布式系统的方差。总体含义是，地面功能的常见原因失败不会严重削弱使用集中式概念与分布式概念的整体情况。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号