Liang Sun
ABSTRACT
A dynamic safety evaluation method of complex systems based on STAMP theory is proposed to solve the safety problem of long-term storage of complex systems in this paper, considering the human-computer interaction effect in the process. Taking STAMP theory as the overall framework and STPA as the analysis method, the accident-causing factors of complex systems are analyzed to provide support for the dynamic evaluation of system safety.Then, the human factor part of complex systems is analyzed, and the CREAM-based human error rate calculation method is proposed.A dynamic evaluation method for task process safety is proposed, taking into account the failure rate of machine loop coupling as input, and the accident rate of the entire task is obtained.Finally,an example verification is conducted, and the results show that the accuracy of the accident rate calculated by the proposed method is improved by 32.1% compared with the accident rate calculated by only considering “machine”.
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Index Terms
- Dynamic Safety Evaluation Method of Complex System Based on STAMP
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