专利名称：Quantitative risk asssment system (QRAS)
发明人：Robert M Weinstock,Carol S Smidts,Ali
Mosleh,Yung-Hsien Chang,Sankaran
Swaminathan,Francisco J Groen,Zhibin Tan
申请号：US09143969
申请日：19980831
公开号：US06223143B1
公开日：
20010424
专利内容由知识产权出版社提供
专利附图：
摘要：A quantitative risk asssment system (QRAS) builds a risk model of a system for which risk of failure is being assd, then analyzes the risk of the system
corresponding to the risk model. The QRAS performs nsitivity analysis of the risk model by altering fundamental components and quantifications built into the risk model, then re-analyzes the risk of the system using the modifications. More particularly, the risk model is built by building a hierarchy, creating a mission timeline, quantifying failure modes, and building/editing event quence diagrams. Multiplicities, dependencies, and redundancies of the system are included in the risk model. For analysis runs, a fixed baline is first constructed and stored. This baline contains the lowest level scenarios, prerved in event tree structure. The analysis runs, at any level of the hierarchy and below, access this baline for risk quantitative computation as well as ranking of particular risks. A standalone Tool Box capability exists, allowing the ur to store application programs within QRAS.
申请人：THE UNITED STATES GOVERNMENT AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 更多信息请下载全文后查看
