科技报告详细信息
Predicting System Accidents with Model Analysis During Hybrid Simulation | |
Fleming, Land D. ; Malin, Jane T. ; Throop, David R. | |
PID : NTRS Document ID: 20100042115 RP-ID : JSC-CN-7296 |
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学科分类:软件 | |
美国|英语 | |
来源: NASA Technical Reports Server | |
【 摘 要 】
Standard discrete event simulation is commonly used to identify system bottlenecks and starving and blocking conditions in resources and services. The CONFIG hybrid discrete/continuous simulation tool can simulate such conditions in combination with inputs external to the simulation. This provides a means for evaluating the vulnerability to system accidents of a system's design, operating procedures, and control software. System accidents are brought about by complex unexpected interactions among multiple system failures , faulty or misleading sensor data, and inappropriate responses of human operators or software. The flows of resource and product materials play a central role in the hazardous situations that may arise in fluid transport and processing systems. We describe the capabilities of CONFIG for simulation-time linear circuit analysis of fluid flows in the context of model-based hazard analysis. We focus on how CONFIG simulates the static stresses in systems of flow. Unlike other flow-related properties, static stresses (or static potentials) cannot be represented by a set of state equations. The distribution of static stresses is dependent on the specific history of operations performed on a system. We discuss the use of this type of information in hazard analysis of system designs.【 预 览 】
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RO201712050000640LZ | 3672KB | download |