北京航空航天大学学报 ›› 2014, Vol. 40 ›› Issue (11): 1543-1548.doi: 10.13700/j.bh.1001-5965.2013.0676

• 论文 • 上一篇    下一篇

动量轮诊断测点配置与资源占用度成本评价

刘睿, 周军, 李鑫, 刘莹莹   

  1. 西北工业大学 精确制导与控制研究所, 西安 710072
  • 收稿日期:2013-11-22 出版日期:2014-11-20 发布日期:2014-12-02
  • 作者简介:刘睿(1985-),女,陕西澄城人,助理研究员,liurui@nwpu.edu.cn.
  • 基金资助:

    国家973计划资助项目(973-613156);中央高校基本科研业务费专项资金资助项目(3102014JCQ01003)

Sensor placement of flywheel under diagnostic criteria and cost estimation

Liu Rui, Zhou Jun, Li Xin, Liu Yingying   

  1. Institute of Precision Guidance and Control, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2013-11-22 Online:2014-11-20 Published:2014-12-02

摘要:

以动量轮为例开展诊断测点配置与成本评价方法研究.分析系统功能模块输出与故障模式之间的关系,建立DG图故障传播定性模型.对DG图回路进行处理,生成满足可检测性和可分离性的根节点,建立偶图.采用改进的贪婪算法选取关键测点,给出诊断测点配置方案.考虑测点对系统体积、重量、功耗、处理能力等资源的要求,提出用资源占用度的概念表示成本计算模型,合理设计了资源占用度的表达形式,可以突出某项重要资源要求对评价结构的影响,也可以避免某些重要指标被弱化,并且在需要考虑其他资源要求时可扩展.通过成本模型对测点配置方案进行评价.

关键词: 动量轮, 可诊断性, 可检测性, 可分离性, DG图, 成本评价

Abstract:

The sensor placement method of flywheel and cost estimation criteria were proposed. The relationship between the function modular and the fault types of the flywheel system was analyzed in order to build the qualitative fault transmit model. The transmit model of the flywheel based on directed graph (DG) was presented. Firstly, control circle in the DG was operated. After that, roots satisfied the detectability and isolability criteria were generated in order to set up the bipartite graph. Then, greedy algorithm was used to resolve the key sensor selecting problem. Finally, considering the volume, the weight, the power consumption, and the processing capacity, resource occupation degree (ROD) was proposed to describe the cost. The ROD easily expresses the importance of certain resources, can avoid the weakness of certain resources, and also is easy to expand. The final sensor placement result was estimated by the ROD.

Key words: flywheel, diagnostic criteria, detectability, isolability, directed graph, cost estimation

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