DCS reliability evaluation method based on dynamic evidence network

Abstract

The invention relates to a DCS reliability evaluation method based on a dynamic evidence network. The method comprises the following steps of 1) obtaining text data for evaluating the reliability of acomponent, and calculating a probability reliability function of the basic component according to the obtained text data; 2) analyzing a system structure, and establishing the dynamic evidence network; 3) performing evidence reasoning according to the dynamic evidence network, thereby obtaining system reliability; and 4), evaluating the system reliability and the uncertainty. Compared with the prior art, the method has the advantages of simple reasoning method, capability of effectively expressing cognitive uncertainty information, small calculation amount and the like.

Description

technical field [0001] The invention relates to the technical field of reliability evaluation, in particular to a DCS reliability evaluation method based on a dynamic evidence network. Background technique [0002] With the development of industrial automation, the reliable operation of DCS (Distributed Control System, Distributed Control System) becomes more and more important. The traditional evaluation method is based on the determined failure rate data, but it is sometimes difficult to obtain the exact failure rate data in the actual evaluation process. It is often a large amount of text data such as evaluation reports and expert opinions that reflect the status of equipment or systems. large cognitive uncertainty. The traditional DCS reliability evaluation method has a complicated calculation process and a large amount of calculation, so it is not suitable for the reliability evaluation of complex dynamic systems. Contents of the invention [0003] The object of the...

AI Technical Summary

Problems solved by technology

The traditional evaluation method is based on the determined failure rate data, but it is sometimes difficult to obtain the exact failure rate data in the actual evaluation process. It is often a large amount of text data such as evaluation reports and expert opinions that reflect the status of equipment or systems. large cognitive uncertainty

The traditional DCS reliability evaluation method has a complicated calculation process and a large amount of calculation, which is not suitable for the reliability evaluation of complex dynamic systems.

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