Complex simulation system credibility evaluation method based on task orientation

Abstract

The invention provides a credibility evaluation method for a complex simulation system based on task orientation. The credibility evaluation method comprises the following steps of carrying out pre-analysis on the complex simulation system; for a simulation task to be executed by a complex simulation system, segmenting the simulation task into a plurality of sub-tasks according to different stagesof an execution process, constructing an information network corresponding to each sub-task, and superposing the information networks according to a time sequence to form a system cooperative network; converting and mapping the system cooperative network into a credibility index network of the complex simulation system, and calculating a credibility conduction coefficient between nodes accordingto the comprehensive credibility of cooperative operation of every two adjacent nodes and the credibility of a single node; and forming a credibility conduction chain according to the credibility conduction coefficient in the index network and the credibility of a single node and a time sequence, and deducing to obtain the final credibility. The invention provides an implementation method for credibility evaluation of a complex simulation system, and provides technical support for evaluation and optimization improvement of the complex simulation system in the fields of aviation, spaceflight, military affairs, traffic and the like.

Description

technical field [0001] The invention belongs to the field of system simulation, in particular to a task-oriented method for evaluating the credibility of a complex simulation system. Background technique [0002] Simulation is the process of imitating or simulating a real object with a certain model and researching it to achieve the goal that people seek, and the simulation system is the carrier of this process. As the embodiment of the application of simulation technology, the simulation system is essentially an approximate system of the simulation object. The key to whether it can effectively reflect the behavior and characteristics of the simulation object under a specific simulation task is to have a qualified simulation credibility. There are many definitions of simulation credibility, one of which is generally accepted: simulation credibility refers to the degree to which the process, phenomenon and results of a simulation system correctly reflect the real world relati...

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Problems solved by technology

[0005] Purpose of the invention: The present invention provides a task-oriented method for evaluating the credibility of complex simulation systems. The technical problem to be solved is to standardize the expression of complex simulation systems according to the rules of category definition and composition optimization. The analysis of information interaction between systems establishes a system collaboration network, and combines the credibility value of a single system and the credibility transmission relationship between systems to establish a credibility index network for complex simulation systems, and then forms a credibility transmission chain to achieve comprehensive reliability. The calculation of reliability can effectively solve the problems of complex simulation system in the process of credibility evaluation, such as the difficulty of system analysis, the difficulty of index system construction, the lack of inter-system relationship measurement in evaluation methods, and the inability to realize dynamic evaluation according to different simulation tasks. Technical Blanks in the Field of System Credibility Evaluation

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