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Selection method of multiple design schemes for complex systems based on petri nets

A technology for complex systems and design schemes, applied in computing, special data processing applications, instruments, etc., can solve the problems of difficult selection of various design schemes, the inability to comprehensively balance the four characteristics, and the two skins of the four characteristics, etc., to achieve the optimal solution Fast and accurate, saving selection time and avoiding repetitive effects

Active Publication Date: 2017-08-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for selecting multiple design schemes for complex systems based on Petri nets, and to establish a four-character integration model for the early stage of complex system development, which solves the problem that the four characteristics cannot be comprehensively balanced in the prior art 1. The problem of difficult selection of multiple design schemes, that is, to solve the current problem of "two skins" between the four characteristics when optimizing the design scheme

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  • Selection method of multiple design schemes for complex systems based on petri nets
  • Selection method of multiple design schemes for complex systems based on petri nets
  • Selection method of multiple design schemes for complex systems based on petri nets

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Embodiment Construction

[0049] First, before describing the specific implementation in detail, the related technologies involved in the present invention will be described.

[0050] The theoretical basis of the present invention includes the knowledge system of the four-nature theory of complex systems, the time-delayed Petri net (TdPN model theory) and the related basic theory of the ant colony algorithm.

[0051] Combine below Figure 1a to Figure 1e , figure 2 , image 3 and practical examples to describe the technical solution of the present invention in detail.

[0052] Example: If a certain function of a complex system can be completed by 4 different schemes, and each scheme includes its own equipment, the details of the 4 schemes are as follows:

[0053] Scenario 1: Initial State 1 - Device 1 - State 2 - Device 5 - State 6 - Device 9 - State 9 - Device 12 - Final State 11

[0054] Scenario 2: Initial State 1 - Device 2 - State 3 - Device 6 - State 6 - Device 9 - State 9 - Device 12 - Fina...

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Abstract

The invention discloses a method for selecting multiple design schemes of a complex system based on Petri nets. For the complex system, firstly, the internal logical structure relationship of each design scheme and the reliability, maintainability, testability, and safety of related components are obtained. attribute information; secondly, build a "feasibility" model, and build a time-delayed Petri net BVTPN based on the feasibility model of the complex system based on the information of each scheme of the complex system, and further construct a comprehensive impact parameter model; finally, combined with the fast speed of the ant colony algorithm and overall, to complete the search for the optimal solution for complex systems. The optimization method proposed by the present invention solves the current difficulty in optimizing multi-attribute schemes for complex systems, that is, by comprehensively weighing the impact of the information on the four properties on the optimal scheme, the phenomenon of "two skins" existing between the four properties is completely solved, and it is extremely It greatly improves the speed and accuracy of complex system scheme optimization, and ensures the effective design of complex systems and the optimal comprehensive performance of the entire life cycle.

Description

technical field [0001] The invention belongs to the field of multi-scheme optimization methods in the development stage of complex systems, and in particular relates to a selection method for multi-design schemes of complex systems based on Petri nets. Background technique [0002] With the rapid development of science and technology and higher and higher functional requirements for products, products need many complex systems to complete the expected functions, especially in high-tech fields such as aviation, aerospace and nuclear technology, which are widely used. However, in the early design stage of complex systems, there are many schemes for a certain task or action of the complex system, which leads to the problem of scheme optimization. The problem of solution optimization for complex systems has always been the focus and difficulty of the product. If there are many problems in the selected solution, it will bring unpredictable losses to the entire life cycle of the p...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 孙有朝崔灿丽
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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