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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.
Taking the momentum wheel as an example, this paper studies the configuration of the measuring point and the method of cost evaluation, analyzes the relationship between the output of the system function module and the failure mode, establishes the qualitative model of DG fault propagation, processes the loop of the DG graph, Separates the root node, and establishes the dual graph.An improved greedy algorithm is adopted to select the key measurement points, and the configuration scheme of the diagnosis measuring point is given.Considering the measurement requirements of the system such as the volume, weight, power consumption, processing power and other resources, The concept of resource occupancy represents a costing model, which reasonably designs the expression of resource occupancy. It can highlight the impact of an important resource requirement on the evaluation structure, and also can prevent certain important indicators from being weakened, and when other resource requirements need to be considered Scalability is used to evaluate the configuration of measurement points using a cost model.