基于可观测性和可靠性的传感器分布优化设计  

Optimization Design of Sensors Location Based on Fault Observability and Reliability

作　　者：徐敏强[1] 宋其江[1] 王日新[1] 

机构地区：[1]哈尔滨工业大学深空探测基础研究中心,哈尔滨150080

出　　处：《宇航学报》2010年第11期2618-2622,共5页Journal of Astronautics

基　　金：863国家高技术研究发展计划(2003AA735080)

摘　　要：为了解决航天器的故障检测的传感器分布的设计问题,本文提出一种描述系统故障的有向图模型,针对该模型,给出了基于可观测性和可靠性的传感器分布的设计问题的描述,并提出了优化设计的思想。根据该思想给出了传感器分布优化设计方案,该方案考虑了故障的可观测性和故障检测的可靠性问题,还有传感器安置成本的约束问题,并采用了贪婪启发式算法实现了该方案。该方案应用到某卫星一次电源系统,仿真算例的结果表明该方案满足了可观测性和可靠性的要求,通过与其它设计方案对比,该方案能够快速提高系统的可靠性,更适合系统设计的需要。To solve the problem of location of fault detection sensors for spacecraft,a diagraph system model is proposed.The optimal design scheme for location of detection sensors is presented according to the model.The scheme takes into account the fault observability,the reliability of fault detection,and sensor placement costs.A greedy heuristics algorithm is designed for the scheme.Furthermore,the proposed approach is applied to primary electrical power supply system in a certain satellite,and the diagnostic simulation results show that the design scheme can meet the design requirements for the observability and the reliability.Compared with the other scheme,this scheme can more rapidly enhance reliability and is more suitable for system needs.

关 键 词：故障诊断 故障检测 有向图模型 传感器分布 故障可观测性 可靠性 一次电源系统 

分 类 号：V474[航空宇航科学与技术—飞行器设计]