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Optimization method of twisted pitch of communication cables based on dual-objective simulated annealing algorithm and non-inferior layering

A simulated annealing algorithm, communication cable technology, applied in the field of communication, can solve problems such as not considering the amount of conductors

Active Publication Date: 2018-03-09
EAST CHINA JIAOTONG UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

And in the design process, usually only the effect of twisting pitch on crosstalk is considered without considering the amount of conductors

Method used

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  • Optimization method of twisted pitch of communication cables based on dual-objective simulated annealing algorithm and non-inferior layering
  • Optimization method of twisted pitch of communication cables based on dual-objective simulated annealing algorithm and non-inferior layering
  • Optimization method of twisted pitch of communication cables based on dual-objective simulated annealing algorithm and non-inferior layering

Examples

Experimental program
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Effect test

Embodiment 1

[0063] logarithm n A 25 communication cable is an example.

[0064] (1) The design parameters of the communication cable are initialized, and the 25 wire pairs are twisted in three layers of 3+9+13 (as attached image 3 ) arrangement, and the numbers in the figure are line pairs. Select the length of the communication cable as , the diameter of the wire core (i.e. copper core) is , to determine the distance from the center of the pair to the center of the wire , the equivalent dielectric constant , the relative magnetic permeability ,but:

[0065] (11)

[0066] (12)

[0067] According to the design standard, determine the optimal range of stranding pitch ( ), set the minimum value of near-end crosstalk attenuation ( ).

[0068] (2) Design objective function

[0069] 1) Optimizing objective function 1: Conductor usage. Calculate the amount of conductors according to formula 1, where the stranding coefficient is determined by the stranding pitch.

[00...

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Abstract

The invention discloses a communication cable stranding pitch optimization method based on a dual-objective simulated annealing algorithm and non-inferior layering. The method aims to optimize the twisting pitch of the communication cable, so as to meet the requirements of near-end crosstalk interference while reducing the amount of communication cable conductors. In this method, on the basis of initializing the design parameters of the communication cable, two optimization objective functions of the communication cable conductor amount and the near-end crosstalk attenuation are designed, and the twisted pitch is obtained by combining the dual-objective simulated annealing algorithm and the idea of ​​non-inferior layering. Feasible solution set.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a communication cable stranding pitch optimization method based on a dual-objective simulated annealing algorithm and non-inferior layering. Background technique [0002] With the advent of the information age, the amount of information transmission has exploded. As a carrier of information transmission, the demand for communication cables continues to increase. Communication cables refer to cables used for short-distance audio communication and long-distance high-frequency carrier digital communication and signal transmission. It is one of the five major cable products in China. In the process of transmitting various communication signals, near-end crosstalk interference is one of the important factors affecting the communication quality of communication cables. In the same communication cable, the effect of crosstalk between wire pairs can be reduced by reasonably selec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 李鹏刘远王裕华邹添彭嘉潮
Owner EAST CHINA JIAOTONG UNIVERSITY
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