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首页> 美国政府科技报告 >Applying Model-Based Reasoning to the FDIR of the Command and Data Handling Subsystem of the International Space Station
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Applying Model-Based Reasoning to the FDIR of the Command and Data Handling Subsystem of the International Space Station

机译：基于模型的推理在国际空间站指挥与数据处理子系统FDIR中的应用

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All of the International Space Station (ISS) systems which require computer control depend upon the hardware and software of the Command and Data Handling System (C&DH) system, currently a network of over 30 386-class computers called Multiplexor/Dimultiplexors (MDMs). The Caution and Warning System (C&W), a set of software tasks that runs on the MDMs, is responsible for detecting, classifying, and reporting errors in all ISS subsystems including the C&DH. Fault Detection, Isolation and Recovery (FDIR) of these errors is typically handled with a combination of automatic and human effort. We are developing an Advanced Diagnostic System (ADS) to augment the C&W system with decision support tools to aid in root cause analysis as well as resolve differing human and machine C&DH state estimates. These tools which draw from sources in model-based reasoning, will improve the speed and accuracy of flight controllers by reducing the un certainty in C&DH state estimation, allowing for a more complete assessment of risk. We have run tests with ISS telemetry and focus on those C&W events which relate to the C&DH system itself. This paper describes our initial results and subsequent plans.

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