An evaluation method for the importance of risk indicators in maglev transportation high safety system

A technology of risk index and safety system, which is applied in the field of evaluation of the importance of risk index of maglev traffic high safety system, can solve the problems of weight calculation result gap, weaken influence relationship, etc., and achieve the effect of eliminating calculation result deviation

Active Publication Date: 2022-06-07
TONGJI UNIV +1
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Problems solved by technology

The objects analyzed by the AHP method have the characteristics of diverse attributes and complex structures, and have achieved good results in the optimization analysis and evaluation of problems that are difficult to use quantitative methods or simply attributed to cost, benefit or effectiveness. The impact relationship between the indicators, the final weight calculation results have a certain gap with the actual

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  • An evaluation method for the importance of risk indicators in maglev transportation high safety system
  • An evaluation method for the importance of risk indicators in maglev transportation high safety system
  • An evaluation method for the importance of risk indicators in maglev transportation high safety system

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Embodiment

[0046] like Figure 1-6 As shown, the present invention provides a method for setting the weight of a system risk impact index with higher reliability. The method fully considers the interaction relationship between factors, establishes a judgment matrix and an impact matrix, and sets each risk impact through matrix operations. The weight of the indicator, the specific implementation steps are as follows:

[0047] 1) Determine the system risk impact index set a 1 , a 2 , a 3 , a 4 , …, a n , according to the 1-9 judgment matrix scaling principle, the relative importance of each element is judged, and multiple judgment matrices A are constructed. k , find the average judgment matrix A=[a ij ] n×n ,in 1 is the number of judgment matrices;

[0048] 2) Carry out the consistency test, the consistency test index CI=λ-n / n-1, where λ is the largest characteristic root of the judgment matrix, n is the order of the matrix, generally CI=0, there is complete consistency; CI Clo...

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Abstract

The present invention relates to a method for assessing the importance of risk indicators in a maglev traffic high-safety system. 1) Determine the system risk impact index set, construct a plurality of judgment matrices, and obtain an average judgment matrix A; 2) Perform a consistency check on the average judgment matrix A ; 3) After passing the consistency check, use the rooting method to calculate the initial value of the weight and normalize the initial value of the weight to obtain the weight ω of the underlying index to the top-level target i ; 4) Construct multiple initial direct influence matrices and calculate the final direct influence matrix Y; 5) Obtain the reachability matrix K according to the final direct influence matrix, and calculate the node influence matrix J according to the reachability matrix K; 6) Combine the initial weight and The node degree calculates the final weight w i , that is, the importance of risk indicators. Compared with the prior art, the present invention has the advantages of eliminating deviation, flexible application, conforming to actual conditions and the like.

Description

technical field [0001] The invention relates to the field of safety in the field of maglev traffic, in particular to a method for evaluating the importance of risk indicators of a high-safety system of maglev traffic. Background technique [0002] The more common way in risk analysis is to calculate the security impact weight of all impact indicators. The commonly used weight calculation methods mainly include the following: the first, statistical average method, this method is to unify the opinions of experts and prevent the deviation of the results from the subjective reasons of the experts, but the subjective opinions of the experts and the set judgment standards are dominant. The weights produced in this way are not objective and scientific enough; the second method is the coefficient of variation method, which assigns objective values ​​based on the information contained in the indicators. This method has high requirements on the indicators. If there is not much differe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/26G06Q50/30G06F17/16
CPCG06Q10/0635G06Q10/06393G06F17/16G06Q50/30G06Q50/265
Inventor 潘洪亮唐少强邱宇杨颖佟来生张杨
Owner TONGJI UNIV
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