A Method for Determining Reconfiguration Timing of Reconfigurable Manufacturing System

Abstract

The invention discloses a method for determining reconfiguration time of a reconfigurable manufacturing system. The method is characterized in that a reconfiguration point of an RMS (reconfigurable manufacturing system) can be quickly and reasonably determined according to the change of an order, a processing function and a processing capability capable of meeting market requirements are rapidly reconfigured, and the features of low cost and quick response of the RMS are kept. The method comprises the following steps of firstly analyzing RMS dynamic complexity by utilization of information entropy, dividing the RMS dynamic complexity EX into a sum of an RMS active complexity Ep and an RMS negative complexity En, and analyzing RMS complexity change situation in the perspectives of the processing function and the processing capability; then constructing a potential function by utilization of a cusp catastrophe theory, wherein the catastrophe moment of the potential function is the reconfiguration time point of the RMS. The method disclosed by the invention has the advantages that reconfiguration point decision judgment evidence is provided for a decision maker, the system reconfiguration is performed in time, and the activity of the RMS is kept.

Description

technical field [0001] The invention relates to the field of advanced manufacturing technology, in particular to a method for determining reconfiguration timing of a reconfigurable manufacturing system. Background technique [0002] With the development of the economy, the competition in the manufacturing industry has intensified, and the needs of customers have become more sophisticated and diversified, resulting in the continuous increase of product types and large fluctuations in market demand. The defects of the manufacturing system are gradually revealed, and the research on new manufacturing systems has gradually become a hot spot, pursuing the pursuit of producing high-quality products at low cost to gain a competitive advantage. The reconfigurable manufacturing system (Reconfigurable Manufacturing System, RMS) can provide precise functions and capabilities according to customer requirements, and has gradually become a research hotspot. [0003] RMS can respond quick...

AI Technical Summary

Problems solved by technology

[0005] (1) It is only a qualitative analysis of the system status, which cannot directly reflect the changes of the system

[0006] (2) When analyzing the complexity of the system, it only analyzes the static complexity without considering the actual production situation

[0007] (3) When analyzing the factors affecting the state of the system, simply analyze the state of the machine tool or the state of the workpiece, without comprehensively considering the state of the workpiece and the machine tool

[0008] (4) The system status is not analyzed from the perspective of processing function and processing capacity

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