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Systems theory and a drive towards model-based safety analysis

机译：系统理论和基于模型的安全性分析的动力

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We propose that systems engineering principles taken from multidisciplinary engineering, from model-based design and systems engineering, and from new, emerging methods for safety analysis of complex, coupled systems can be applied to extend the methods of system safety assurance into a so-called field of "Model-based Safety Analysis". The safety analysis methods are based on a model of accident causality that is grounded in systems theory and frames safety as a control problem rather than just a reliability problem. This perspective can capture behaviors that are prevalent in complex, human- and software-intensive systems, and the paper includes a few brief examples to demonstrate the approach. This model-based safety analysis supplements existing model-based systems engineering activities, as well as other safety-related activities and can be applied early in concept development when design details or system specifications are not yet available-it provides a formal means for reasoning about immature system design concepts.
机译：我们建议，可以应用从多学科工程，基于模型的设计和系统工程以及对复杂的耦合系统进行安全分析的新方法中获得的系统工程原理，将系统安全保证方法扩展为所谓的基于模型的安全性分析”字段。安全分析方法基于事故因果关系模型，该模型基于系统理论，并将安全性视为控制问题，而不仅仅是可靠性问题。这种观点可以捕获在复杂的，需要大量人力和软件的系统中普遍存在的行为，并且本文包括了一些简短的示例来演示该方法。这种基于模型的安全性分析补充了现有的基于模型的系统工程活动以及其他与安全性相关的活动，可以在尚无设计细节或系统规格的概念开发早期应用—它提供了一种正式的推理方法不成熟的系统设计概念。

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