Multi-attribute die-casting machine die pattern recognition method based on D-S evidence theory

A technology of evidence theory and pattern recognition, applied in the direction of character and pattern recognition, electrical digital data processing, special data processing applications, etc., can solve the problems of reducing production efficiency, time and effort, waste of resources, etc., to reduce processing time and reduce production Cost, the effect of improving production efficiency

Active Publication Date: 2015-06-24
RES INST OF XIAN JIAOTONG UNIV & SUZHOU
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Problems solved by technology

Therefore, it is time-consuming and labor-intensive, which greatly reduces the production efficiency. Due to the backwardness of the current injection process design method, it also causes a huge waste of resources.

Method used

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  • Multi-attribute die-casting machine die pattern recognition method based on D-S evidence theory
  • Multi-attribute die-casting machine die pattern recognition method based on D-S evidence theory
  • Multi-attribute die-casting machine die pattern recognition method based on D-S evidence theory

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Embodiment

[0021] A multi-attribute die-casting machine die pattern recognition method based on D-S evidence theory, suitable for pattern recognition of new die-casting dies, adopts the following steps:

[0022] Firstly, by analyzing the problem of target recognition, construct the proposition set of the system and the recognition frame of knowledge. That is to determine the various die casting modes of the die casting machine.

[0023] Afterwards, for the target information system, an evidence body based on the identification framework is constructed. That is, the six more important process parameters in each die-casting mode, that is, the average wall thickness used in the establishment of the database, the liquid metal density in the pressure chamber, the length of the pressure chamber, the quality of the pouring metal in the pressure chamber, the quality of the casting and the overflow quality, Pressure chamber diameter six parameters.

[0024] Then, according to the known ...

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Abstract

The invention discloses a multi-attribute die-casting machine die pattern recognition method based on a D-S evidence theory. The method comprises the following steps that a target recognition problem is analyzed, and a systematic proposition set and a knowledge recognition framework are established for confirming multiple die-casting modes of a die-casting machine; aiming at a target information system, evidence bodies based on the recognition framework is established; characteristics of each proposition is combined based on known evidence body information, an elementary probability assignment of each evidence body is calculated by adopting the Hamming distance; based on the elementary probability assignment, a reliability section of each proposition in the recognition framework is calculated under the effect of each evidence body; by utilizing a D-S evidence composition rule, the elementary probability assignment and the reliability area are calculated under the combined effect of all the evidence bodies, a mode with the higher reliability is selected to be subjected to matching. According to few times of trying and technological modifications, a quality conformance casting is obtained. The production efficiency is greatly improved, and the production cost is lowered.

Description

technical field [0001] The present invention relates to a multi-attribute die-casting machine mold pattern recognition method, in particular to a multi-attribute die-casting machine mold pattern recognition method based on D-S evidence theory that matches existing patterns in a knowledge base to find the most similar pattern Attribute Die Casting Machine Die Pattern Recognition Method. Background technique [0002] At present, for the production of a batch of new die-casting molds, the traditional process design method is the trial-and-error method, that is, the design is based on the past experience of the technicians, combined with the characteristics of the die-casting machine and the mold. At the same time, the design process needs to go through dozens of trial molds , Full inspection until qualified castings are detected. Therefore, it is time-consuming and labor-intensive, which greatly reduces the production efficiency. Due to the backward design method of the curren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06K9/62
Inventor 姜洪权高建民梁泽明张雪微王宏叶张凡勇刘文强
Owner RES INST OF XIAN JIAOTONG UNIV & SUZHOU
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